同位素中δ标准检测标准同位素中δ标准-中析研究所检测

(CMA)

(CNAS)

(ISO)

(高新技术企业)

同位素中δ标准相关标准参考信息

GB/T 13701-1992 单标准气体质谱法铀同位素分析
简介：本标准规定了单标准气体质谱法UF铀同位素分析的方法和步骤。本标准适用于六氟化铀样品铀同位素丰度和丰度比的测量。采用合适的标样，该方法可用于铀-235所有丰度范围的样品的任何同位素的分析。本标准也适用于铀同位素分离研究中分离系数的测定。
信息：ICS：27.120.30 CCS：F46 发布：1992-09-29 实施：1993-08-01

ASTM C1672-17 使用热离子化质谱仪通过总蒸发方法测定铀或钚同位素组成或浓度的标准测试方法
简介：
信息：ICS：27.120.30 CCS：发布：2017-01-01 实施：

ASTM D4785-08(2013)e1 水中碘放射性同位素低级分析的标准测试方法
简介：
信息：ICS：13.060.50 CCS：发布：2013-06-15 实施：

ASTM C1832-23 用热电离质谱仪用改进的全蒸发（MTE）法测定铀同位素组成的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2023-01-01 实施：

ASTM C1672-2017 用热电离质谱分光计通过总数蒸发法测定铀或钚同位素组成或浓度的标准试验方法
简介：5.1x00a0;The total evaporation method is used to measure the isotopic composition of uranium and plutonium materials, and may be used to measure the elemental concentrations of the two elements when employing the IDMS technique. 5.2x00a0;Uranium and plutonium compounds are used as nuclear reactor fuels. In order to be suitable for use as a nuclear fuel the starting material must meet certain criteria, such as found in Specifications C757, C833, C753, C776, C787, C967, C996, C1008, or as specified by the purchaser. The uranium concentration, plutonium concentration, or both, and isotope abundances are measured by thermal ionization mass spectrometry following this method. 5.3x00a0;The total evaporation method allows for a wide range of sample loading with no significant change in precision or accuracy. The method is also suitable for trace-level loadings with some loss of precision and accuracy. The total evaporation method and modern instrumentation allow for the measurement of minor isotopes using ion counting detectors, while the major isotope(s) is(are) simultaneously measured using Faraday cup detectors. 5.4x00a0;The new generation of miniaturized ion counters allow extremely small samples, in the picogram range, to be measured via the total evaporation method. The method may be employed for measuring environmental or safeguards inspection samples containing nanogram quantities of uranium or plutonium. Very small loadings require special sample handling and careful evaluation of measurement uncertainties. 5.5x00a0;Typical uranium analyses are conducted using sample loadings between 50 nanograms and several micrograms. For uranium isotope ratios the total evaporation method had been used in several recent NBL isotopic certified reference material (CRM) characterizations (for example (2, 3)). A detailed comparison of the total evaporation data on NBL uranium CRMs analyzed by the MAT 261 and TRITONTM instruments is provided in Ref (5). For total evaporation, plutonium analyses are generally conducted using sample loads in the range of 30 to 400 nanograms of plutonium. 1.1x00a0;This method describes the determination of the isotopic composition, or the concentration, or both, of uranium and plutonium as nitrate solutions by the total evaporation method using a thermal ionization mass spectrometer (TIMS) instrument. Purified uranium or plutonium nitrate solutions are deposited onto a metal filament and placed in the mass spectrometer. Under computer control, ion currents are generated by heating of the filament(s). The ion currents are continually measured until the whole sample is exhausted. The measured ion currents are integrated over the course of the measurement and normalized to a reference isotope ion current to yield isotope ratios.
信息：ICS：27.120.30 CCS：F40 发布：2017 实施：

ASTM D7026-2013 通过碳同位素分析测定材料的生物基含量的测定结果的抽样和报告用标准指南
简介：4.1x00a0;The carbon isotope analysis is designed to be an adjunct to other information in determination of biobased content, specifically the manufacturerx2019;s records. It is also a means of verifying the authenticity of a disputed lot of material which may be manufactured by different means, from different raw materials. FTIR or other chemical analysis means will identify the molecule as being ethanol, but not give indication of the source (that is, fossil carbon versus modern carbon). The carbon isotopes will give both indication of source and the presence of a mixture of sources. 4.2x00a0;Representative sampling and handling methods are clearly a prerequisite to obtaining accurate results from the radiocarbon composition determination and any other quantitative analytical method. 4.3x00a0;This guide provides for accurate and complete reporting of the sample collection, handling, chain of custody, sample preparation and treatment that allows any independent party to assess the validity of the reported biobased content of the material. 1.1x00a0;This guide provides a framework for collecting and handling samples for determination of biobased content of materials by means of the carbon isotope method described in Test Methods D6866. Tests for sampling adequacy based on the standard statistical tools are provided. In addition, reporting of the results, including sampling techniques and handling procedures and chain-of-custody issues are discussed. 1.2x00a0;This guide is concerned with collecting representative samples within a given material or a lot, not with lot-to-lot variations such as considered in quality control schemes. 1.3x00a0;Biobased materials often represent sampling problems specific to a given material, such as heterogeneity, and so forth, which require employment of material-specific sampling methods. The use of specialized sampling methods already accepted and validated by industries that manufacture and/or use the biomaterial is encouraged. However, all sampling techniques, especially non-standard techniques developed for specific materials must be reported in sufficient detail to allow critical assessment of the techniques used. 1.4x00a0;Carbon isotope analysis involves thermal processing in presence of oxidants. Compatibility of any given material with Test Methods D6866 must be assessed. Special attention must be given to materials with potential for explosion hazards, such as peroxides, nitrated compounds, azides, and so forth. Examples of peroxide-forming compounds are ethers, some ketones and a number of other compounds. 1.5x00a0;The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.
信息：ICS：19.100 (Non-destructive testing) CCS：发布：2013 实施：

ASTM C1871-22 用热电离质谱仪用双峰法测定铀同位素组成的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2022-02-01 实施：

ASTM C1845-16 使用高压离子色谱（HPIC）通过电感耦合等离子体质谱法（ICP-MS）同位素分析从铀原子分离镧系元素的标准实践
简介：
信息：ICS：27.120.30 CCS：发布：2016-06-01 实施：

GOST R 8.735.2-2013 确保测量一致性的国家系统. 液体和固体介质及材料有机组分含量测量仪器的国家层次方案. 基于同位素稀释和重力测定液体和气体色谱-质谱的国家一级标准组件转移
简介：
信息：ICS：17.020 CCS：发布：2013 实施：2014-10-01

ASTM C1832-22 用热电离质谱仪用改进的全蒸发（MTE）法测定铀同位素组成的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2022-02-01 实施：

ASTM C1832-16 使用热离子化质谱仪通过改进的总蒸发（MTE）方法测定铀同位素组成的标准测试方法
简介：
信息：ICS：27.120.30 CCS：发布：2016-01-15 实施：

GJB 7972-2012 八氧化三铀同位素标准物质制备方法
简介：本标准规定了八氧化三铀同位素标准物质的制备及其铀同位素丰度的定值方法。本标准适用于以金属铀为原料，制备U丰度为0.3%~90%的八氧化三铀同位素标准物质。以其他铀物料为原料制备八氧化三铀同位素标准物质时，可参照使用。
信息：ICS： CCS：发布：2012-12-27 实施：2013-04-01

ASTM C1429-21 用双标准多收集器气体质谱仪进行六氟化铀同位素分析的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2021-10-01 实施：

ASTM C1816-16 在同位素丰度和含量分析之前含有铀 Americ和钚的小体积样品离子交换分离的标准实践
简介：
信息：ICS：27.120.30 CCS：发布：2016-01-15 实施：

ASTM C1625-12 通过热离子化质谱法测定铀和钚浓度和同位素丰度的标准测试方法
简介：
信息：ICS：27.120.30 CCS：发布：2012-06-01 实施：

ASTM C1832-21 用热电离质谱仪用改进的全蒸发（MTE）法测定铀同位素组成的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2021-06-01 实施：

ASTM C1816-2016 同位素丰度和含量分析前对含铀, 镅和钚的小容量样本进行离子交换分离的标准实施规程
简介：5.1x00a0;Uranium and plutonium are used in nuclear reactor fuel and must be analyzed to ensure that they meet acceptance criteria for isotopic composition as described in Specifications C833 and C1008. The criteria are set by mutual agreement between the manufacturer and end user (or between buyer and seller). This standard practice is used to separate chemically the isobaric interferences from 238U and 238Pu and from 241Am and 241Pu, and from other impurities prior to isotopic abundance determination by TIMS. 5.2x00a0;In facilities where perchloric acid use is authorized, the separation in Test Method C698 may be used prior to isotopic abundance determination. Uranium and plutonium content as well as isotopic abundances using TIMS can be determined by using this separation practice and by following Test Methods C698, C1625, or C1672. 1.1x00a0;This practice is an alternative to Practice C1411 for the ion exchange separation in small mass samples (~5 x03bc;g of plutonium and up to 0.5 mg of uranium in 1 mL of solution) of uranium and plutonium from each other and from other impurities for subsequent isotopic abundance and content analysis by thermal ionization mass spectrometry (TIMS). In addition to being adapted to smaller sample sizes, this practice also avoids the use of hydrochloric acid (HCl) and hydrofluoric acid (HF) and does not require the use of two anion exchange columns as required in Practice C1411. 1.2x00a0;In chemically unseparated samples isobaric nuclides at mass 238 (238U and 238Pu), and mass 241 (241Pu and 241Am) will be measured together thus compromising the accuracy of the results of isotopic composition of Pu. Therefore, chemical separation of elements is essential prior to isotopic analyses. Concentrations and volumes given in the paragraphs below can be modified for larger sample sizes, different types of anion exchange resin, etc. 1.3x00a0;The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息：ICS： CCS：发布：2016 实施：

ASTM C1625-2012 用热电离质谱法测定铀和钚浓度和其同位素丰度的标准试验方法
简介：Uranium and plutonium oxides can be used as a nuclear-reactor fuel in the form of pellets. In order to be suitable for use as a nuclear fuel the starting material must meet certain specifications, such as found in Specifications C757, C833, C753, C776, C1008, or as specified by the purchaser. The uranium and/or plutonium concentration and isotopic abundances are measured by mass spectrometry following this test method. The separated heavy element fractions placed on mass spectrometric filaments must be very pure. The quantity required depends upon the sensitivity of the instrument detection system. If an electron multiplier detector is to be used, only a few nanograms are required. If a Faraday cup is used, a few micrograms are needed. Chemical purity of the sample becomes more important as the sample size decreases, because ion emission of the sample is suppressed by impurities.1.1 This test method covers the determination of the concentration and isotopic composition of uranium and plutonium in solutions. The purified uranium or plutonium from samples ranging from nuclear materials to environmental or bioassay matrices is loaded onto a mass spectrometric filament. The isotopic ratio is determined by thermal ionization mass spectrometry, the concentration is determined by isotope dilution. 1.2 The values stated in SI units are to be regarded as the standard. Values in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish safety and health practices and determine the applicability of regulatory limitations prior to use.
信息：ICS：27.120.30 (Fissile materials and nuclear fuel tech CCS：F46 发布：2012 实施：

ASTM C1832-2021 利用热离子质谱仪改进总蒸发(MTE)法测定铀同位素成分的标准试验方法
简介：1.1?This test method describes the determination of the isotope amount ratios of uranium material as nitrate solutions by the modified total evaporation (MTE) method using a thermal ionization mass spectrometer (TIMS) instrument. 1.2?The analytical performance in the determinat
信息：ICS： CCS：F40/49 发布：2021 实施：

ASTM C1832-2016 利用热离子质谱仪的改进总蒸发 (MTE) 法测定铀同位素成分的标准试验方法
简介：5.1x00a0;Uranium material is used as a fuel in certain types of nuclear reactors. To be suitable for use as nuclear fuel, the starting material shall meet certain specifications such as those described in Specifications C753, C776, C787, C833, C967, C996, and C1008, or as specified by the purchaser. The isotope amount ratios of uranium material can be measured by mass spectrometry following this test method to ensure that they meet the specification. 5.2x00a0;The MTE method can be used for a wide range of sample sizes even in samples containing as low as 50 x03bc;g of uranium. If the uranium sample is in the form of uranium hexafluoride, it can be converted into a uranium nitrate solution for measurement by the MTE method. The concentration of the loading solution for MTE has to be in the range of 1 to 6 mg/g to allow a sample loading of 2 to 6 x03bc;g of uranium. A minimum loading of 3 x03bc;g uranium per filament is recommended. This is needed to have a suitable ion signal especially for the two minor isotopes (234U and 236U) thus enabling the internal calibration of SEM versus the Faraday cups during the measurement. 5.3x00a0;Until now, the instrument capabilities for the MTE method have only been implemented on the TRITONx2122; TIMS instrument.5 Therefore all recommendations for measurement parameters in this test method are specified for the TRITONx2122; TIMS instrument. The manufacturers of other TIMS instruments (for example, IsotopX and Nu Instruments) have plans to implement the modifications needed in their instruments to use the MTE method. 5.4x00a0;The MTE method described here can also be extended to measurement of elements other than uranium. Note that the MTE method has already been implemented for plutonium and calcium. 1.1x00a0;This test method describes the determination of the isotope amount ratios of uranium material as nitrate solutions by the modified total evaporation (MTE) method using a thermal ionization mass spectrometer (TIMS) instrument. 1.2x00a0;The analytical performance in the determination of the 235U/238U major isotope amount ratio by MTE is similar to the (x201c;classicalx201d;) total evaporation (TE) method as described in Test Method C1672. However, in the MTE method, the evaporation process is interrupted on a regular basis to allow measurements and subsequent corrections for background form peak tailing, perform internal calibration of a secondary electron multiplier (SEM) detector versus the Faraday cups, peak centering, and ion source refocusing. Performing these calibrations and corrections on a regular basis during the measurement, improves precision, and significantly reduces uncertainties for the minor isotope amount ratios 234U/238U and 236U/238U as compared to the TE method. 1.3x00a0;In principle, the MTE method yields major isotope amount ratios without the......
信息：ICS： CCS：发布：2016 实施：

ASTM C1413-05(2011) 热电离质谱法测定水解六氟化铀和硝酸铀酰溶液同位素分析的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2011-06-01 实施：

ASTM C1411-20 在同位素分析前对铀和钚进行离子交换分离的标准实践
简介：
信息：ICS：27.120.30 CCS：发布：2020-07-01 实施：

ASTM C1845-2016 在以电感耦合等离子体质谱法 (ICP-MS)进行的同位素分析中使用高压离子色谱法 (HPIC) 从铀矩阵中分离镧系元素的标准实施规程
简介：5.1x00a0;The measurement of isotopic distributions for the lanthanide series elements is of important to all phases of the nuclear fuels cycle. Examples include the purification of the Nd isotopes from Ce and Sm isotopes for the determination of atom percent fission through the production of 148Nd in irradiated nuclear fuels using Practice C1769, determination of rare earth content and isotopic distribution in Uranium Ore Concentrates (UOC) for source term and production of lanthanide fission products in irradiated nuclear fuels for determination of performance, improvements of depletion codes, and analysis of burnup indicators.3 1.1x00a0;This practice provides instructions for the rapid separation of lanthanide elements using high pressure ion chromatography (HPIC) from dissolved uranium materials such as: nuclear fuels, uranium ores, hydrolyzed UF6, and depleted, natural, or enriched oxides/powders, or metals. When optimized, this technique will produce purified elemental fractions of the lanthanide elements isolated from the bulk uranium matrix allowing for isotopic assay using inductively coupled plasma mass spectrometry (ICP-MS). 1.2x00a0;This practice is most applicable for analyte concentrations of nanograms per gram uranium or higher. For ICP-MS detection and measurement of analyte concentrations lower than this, it would be necessary to perform additional pre-cleanup or concentration techniques, or both, which are not addressed in this practice. 1.3x00a0;When combined with isotope dilution, this practice can also be used for improved precision assays of the lanthanide elements using the principle of isotope dilution mass spectrometry (IDMS). 1.4x00a0;The values stated in SI units are to be regarded as standard. No other units of measurement are included in this practice. 1.5x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息：ICS： CCS：发布：2016 实施：

ASTM C1474-00(2011) 用四极感应耦合等离子体质谱法分析核级燃料材料中铀同位素组成的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2011-06-01 实施：

ASTM D4785-20 水中碘放射性同位素低级分析的标准测试方法
简介：
信息：ICS：13.060.50 CCS：发布：2020-05-01 实施：

ASTM C1769-15 用于分析核燃料以确定所选同位素并估计燃料燃耗的标准实践
简介：
信息：ICS：27.120.30 CCS：发布：2015-06-01 实施：

ASTM C1428-11 用单标准气源多收集器质谱仪法进行六氟化铀同位素分析的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2011-03-01 实施：

ASTM C1000-19 通过Alpha光谱法测定土壤中铀同位素的标准测试方法
简介：
信息：ICS：17.240 CCS：发布：2019-11-01 实施：

ASTM C1816-15 在同位素丰度和含量分析之前含有铀 Americ和钚的小体积样品离子交换分离的标准实践
简介：
信息：ICS：27.120.30 CCS：发布：2015-06-01 实施：

ASTM C1473-11 用α光谱法对尿中铀同位素进行放射化学测定的标准试验方法
简介：
信息：ICS：11.100 CCS：发布：2011-02-15 实施：

ASTM C1473-19 用α光谱法对尿中铀同位素进行放射化学测定的标准试验方法
简介：
信息：ICS：11.100 CCS：发布：2019-11-01 实施：

ASTM D3972-09(2015) 通过放射化学测定水中同位素铀的标准测试方法
简介：
信息：ICS：13.060.50 CCS：发布：2015-01-01 实施：

ASTM C1000-11 通过Alpha光谱法测定土壤中铀同位素的标准测试方法
简介：
信息：ICS：17.240 CCS：发布：2011-02-01 实施：

ASTM C1477-19 通过多集电极电感耦合等离子体质谱法对六氟化铀和硝酸铀溶液进行同位素丰度分析的标准测试方法
简介：
信息：ICS：27.120.30 CCS：发布：2019-11-01 实施：

ASTM C1769-2015 为测定选定同位素以及评估燃料燃耗的废核燃料分析的标准实施规程
简介：5.1x00a0;This standard practice defines a measure of heavy element atom percent fission from which the output of heat during irradiation can be estimated. 5.2x00a0;This standard practice is restricted in use to samples where accurate pre-irradiation U and Pu isotopic analysis is available. This data should be available from the fuel manufacture. 5.3x00a0;The contribution of 238U fast fission is not subject to measurement from isotopic analysis. For reactors in which the majority of fissions are caused by thermal neutrons, the contribution may be estimated from the fast fission factors, x03b5;, found in each reactor design document. 5.4x00a0;In post-irradiation isotopic analysis, take extreme care to avoid environmental uranium contamination of the sample. This is simplified by using sample sizes in which the amount of each uranium isotope is more than 1000 times the levels observed in a blank carried through the complete chemistry and mass spectrometry procedure employed. 5.5x00a0;Take care to make sure that both the pre-irradiation and the post-irradiation samples analyzed are representative. In the pre-irradiation fuel, the 235U and 236U atom ratio content may vary from lot to lot. 236U is not found in naturally uranium in measurable quantity (<2 ppm of a u basis) but forms during irradiation and increases with each successive pass through the fuel cycle. In the post-irradiation examination of a large fuel element, the atom percent fission normally varies radially and axially. Radial and axial profiles of atom percent fission can be determined by analyzing samples obtained from along the radius or axis of the fuel element. An average value of atom percent fission can be obtained by totally dissolving the fuel to be averaged, and then mixing and analyzing an aliquot of the resultant solution. 5.6x00a0;The burnup of an irradiated nuclear fuel can be determined from the amount of a fission product formed during irradiation. Among the fission products, 148Nd has the following properties to recommend it as an ideal burnup indicator: (1) It is not volatile. (2) It does not migrate in solid fuels below their recrystallization temperature. (3) It has no volatile precursors. (4) It is nonradioactive and requires no decay corrections. (5) It has a low destruction cross section. (6) Formation of 148Nd from adjacent mass chains can be corrected for. (7) It has adequate emission characteristics for mass analysis. (8) Its fission yield is nearly equivalent for 235U and 239Pu. (9) Its fission yield is essentially independent......
信息：ICS： CCS：发布：2015 实施：

ASTM C1473-2011 α光谱测定法放化测定尿中铀同位素的标准试验方法
简介：This test method is used to detect possible exposures to uranium isotopes from occupational operations.1.1 This test method is applicable to the determination of uranium in urine at levels of detection dependent on sample size, count time, detector background, and tracer yield. It is designed as a screening tool for detection of possible exposure of occupational workers. 1.2 This test method is designed for 50 mL of urine. This test method does not address the sampling protocol or sample preservation methods associated with its use. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息：ICS：11.100 CCS：F46 发布：2011 实施：

ASTM C1625-19 通过热离子化质谱法测定铀和钚浓度和同位素丰度的标准测试方法
简介：
信息：ICS：27.120.30 CCS：发布：2019-09-15 实施：

ASTM C1816-2015 同位素丰度和含量分析前对含铀, 镅和钚的小容量样本进行离子交换分离的标准实施规程
简介：5.1x00a0;Uranium and plutonium are used in nuclear reactor fuel and must be analyzed to ensure that they meet acceptance criteria for isotopic composition as described in Specifications C833 and C1008. The criteria are set by mutual agreement between the manufacturer and end user (or between buyer and seller). This standard practice is used to separate chemically the isobaric interferences from 238U and 238Pu and from 241Am and 241Pu, and from other impurities prior to isotopic abundance determination by TIMS. 5.2x00a0;In facilities where perchloric acid use is authorized, the separation in Test Method C698 may be used prior to isotopic abundance determination. Uranium and plutonium content as well as isotopic abundances using TIMS can be determined by using this separation practice and by following Test Methods C698, C1625, or C1672. 1.1x00a0;This practice is an alternative to Practice C1411 for the ion exchange separation in small mass samples (~5 x03bc;g of plutonium and up to 0.5 mg of uranium in 1 mL of solution) of uranium and plutonium from each other and from other impurities for subsequent isotopic abundance and content analysis by thermal ionization mass spectrometry (TIMS). In addition to being adapted to smaller sample sizes, this practice also avoids the use of hydrochloric acid (HCl) and hydrofluoric acid (HF) and does not require the use of two anion exchange columns as required in Practice C1411. 1.2x00a0;In chemically unseparated samples isobaric nuclides at mass 238 (238U and 238Pu), and mass 241 (241Pu and 241Am) will be measured together thus compromising the accuracy of the results of isotopic composition of Pu. Therefore, chemical separation of elements is essential prior to isotopic analyses. Concentrations and volumes given in the paragraphs below can be modified for larger sample sizes, different types of anion exchange resin, etc. 1.3x00a0;The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息：ICS： CCS：发布：2015 实施：

ASTM C1000-2011 用α光谱分析法放化测定土壤中铀同位素的标准试验方法
简介：This test method is used to analyze soil for alpha-emitting uranium isotopes. It can be used to establish baseline uranium levels and to monitor depositions from nuclear facilities.1.1 This test method covers the determination of alpha-emitting uranium isotopes in soil. This test method describes one acceptable approach to the determination of uranium isotopes in soil. 1.2 The test method is designed to analyze 10 g of soil; however, the sample size may be varied to 50 g depending on the activity level. This test method may not be able to completely dissolve all forms of uranium in the soil matrix. Studies have indicated that the use of hydrofluoric acid to dissolve soil has resulted in lower values than results using total dissolution by fusion. 1.3 The lower limit of detection is dependent on count time, sample size, detector, background, and tracer yield. The chemical yield averaged 78 % in a single laboratory evaluation, and 66 % in an interlaboratory collaborative study. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. A specific precautionary statement is given in Section 10.
信息：ICS：17.240 CCS：Z33 发布：2011 实施：

ASTM E2426-10(2019) 用SIMS测量同位素比测定脉冲计数系统死区时间的标准实施规程
简介：
信息：ICS：71.040.50 CCS：发布：2019-01-01 实施：

ASTM C1415-14 α光谱法测定²³⁸钚同位素丰度的标准试验方法
简介：
信息：ICS：71.060.10 CCS：发布：2014-06-01 实施：

ASTM C1428-2011 用单支标准气体源多收集器质谱仪法进行六氟化铀的同位素分析的标准试验方法
简介：Uranium hexafluoride is a basic material used to produce nuclear reactor fuel. To be suitable for this purpose, the material must meet criteria for isotopic composition. This test method is designed to determine whether the material meets the requirements described in Specifications C787 and C996.1.1 This test method is applicable to the isotopic analysis of uranium hexafluoride (UF6) with 235U concentrations less than or equal to 5 % and 234U, 236U concentrations of 0.0002 to 0.1 %. 1.2 This test method may be applicable to the analysis of the entire range of 235U isotopic compositions providing that adequate Certified Reference Materials (CRMs or traceable standards) are available. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety health practices and determine the applicability of regulatory limitations prior to use.
信息：ICS：27.120.30 CCS：F46 发布：2011 实施：

ASTM C1413-18 热电离质谱法测定水解六氟化铀和硝酸铀酰溶液同位素分析的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2018-11-01 实施：

ASTM C1429-99(2014) 用双标准多收集器气体质谱仪进行六氟化铀同位素分析的标准试验方法
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信息：ICS：27.120.30 CCS：发布：2014-06-01 实施：

ASTM C1742-10 通过双标准单集气气体质谱法进行六氟化铀同位素分析的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2010-10-01 实施：

ASTM C1428-18 用单原子吸收法对六氟化铀进行同位素分析的标准试验方法&x2013；标准气源多收集器质谱仪法
简介：
信息：ICS：27.120.30 CCS：发布：2018-11-01 实施：

ASTM C1411-14 在同位素分析前对铀和钚进行离子交换分离的标准实践
简介：
信息：ICS：27.120.30 CCS：发布：2014-01-01 实施：

ASTM C1030-10 通过γ射线光谱法测定钚同位素组成的标准测试方法
简介：
信息：ICS：27.120.30 CCS：发布：2010-06-15 实施：

ASTM C1871-18a 用热电离质谱仪用双尖峰法测定铀同位素组成的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2018-06-01 实施：

ASTM C1477-08(2014) 通过多集电极电感耦合等离子体质谱法对六氟化铀和硝酸铀溶液进行同位素丰度分析的标准测试方法
简介：
信息：ICS：27.120.30 CCS：发布：2014-01-01 实施：

ASTM E2426-10 用SIMS测量同位素比测定脉冲计数系统死区时间的标准实施规程
简介：
信息：ICS：71.040.50 CCS：发布：2010-06-01 实施：

ASTM C1415-18 α光谱法测定²³⁸钚同位素丰度的标准试验方法
简介：
信息：ICS：71.060.10 CCS：发布：2018-06-01 实施：

ASTM C1672-07(2014) 使用热离子化质谱仪通过总蒸发方法测定铀或钚同位素组成或浓度的标准测试方法
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信息：ICS：27.120.30 CCS：发布：2014-01-01 实施：

ASTM E2426-2010 通过用次级离子质谱法测量同位素比率对脉冲计算系统死时间测定的标准实施规程
简介：Electron multipliers are commonly used in pulse-counting mode to detect ions from magnetic sector mass spectrometers. The electronics used to amplify, detect and count pulses from the electron multipliers always have a characteristic time interval after the detection of a pulse, during which no other pulses can be counted. This characteristic time interval is known as the x201C;dead time.x201D; The dead time has the effect of reducing the measured count rate compared with the x201C;truex201D; count rate. In order to measure count rates accurately over the entire dynamic range of a pulse counting detector, such as an electron multiplier, the dead time of the entire pulse counting system must be well known. Accurate count rate measurement forms the basis of isotopic ratio measurements as well as elemental abundance determinations. The procedure described herein has been successfully used to determine the dead time of counting systems on SIMS instruments. The accurate determination of the dead time by this method has been a key component of precision isotopic ratio measurements made by SIMS.1.1 This practice provides the Secondary Ion Mass Spectrometry (SIMS) analyst with a method for determining the dead time of the pulse-counting detection systems on the instrument. This practice also allows the analyst to determine whether the apparent dead time is independent of count rate. 1.2 This practice is applicable to most types of mass spectrometers that have pulse-counting detectors. 1.3 This practice does not describe methods for precise or accurate isotopic ratio measurements. 1.4 This practice does not describe methods for the proper operation of pulse counting systems and detectors for mass spectrometry. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息：ICS：71.040.50 CCS：G04 发布：2010 实施：

ASTM C1871-18 用热电离质谱仪用双尖峰法测定铀同位素组成的标准试验方法
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信息：ICS：27.120.30 CCS：发布：2018-02-01 实施：

ASTM C1415-2014 用阿尔法光谱测定法测定钚-238同位素丰度的标准试验方法
简介：5.1x00a0;This test method is used when the determination of 238Pu isotopic abundance is required for plutonium samples. 1.1x00a0;This test method covers the use of alpha spectrometry for determining the 238Pu isotopic abundance in plutonium samples. It is particularly useful for samples in which the 238Pu content is less than 18201;% of the total plutonium content. For such samples, mass spectrometric results are vulnerable to bias because of potential interference from any 238U isobar remaining after ion exchange. 1.2x00a0;The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3x00a0;This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息：ICS：71.060.10 (Chemical elements) CCS：发布：2014 实施：

ASTM C1742-2010 用双标准单收集器气体质谱仪法进行六氟化铀同位素分析的标准试验方法
简介：Uranium hexafluoride is a basic material used to prepare nuclear reactor fuel. To be suitable for this purpose, the material shall meet the criteria for isotopic composition. This test method is designed to determine whether the material meets the requirements described in Specifications C787 and C996. ASTM Committee C26 Safeguards Statement: The material (uranium hexafluoride) to which this test method applies is subject to the nuclear safeguards regulations governing its possession and use. The analytical procedure in this test method has been designated as technically acceptable for generating safeguards accountability data. When used in conjunction with the appropriate certified reference materials (CRMs), this procedure can demonstrate traceability to the national measurement base. However, adherence to this procedure does not automatically guarantee regulatory acceptance of the regulatory safeguards measurements. It remains the sole responsibility of the user of this test method to ensure that its application to safeguards has the approval of the proper regulatory authorities.1.1 This is a quantitative test method applicable to determining the mass percent of uranium isotopes in uranium hexafluoride (UF6) samples with 235U concentrations between 0.1 and 5.0 mass %. 1.2 This test method may be applicable for the entire range of 235U concentrations for which adequate standards are available. 1.3 This test method is for analysis by a gas magnetic sector mass spectrometer with a single collector using interpolation to determine the isotopic concentration of an unknown sample between two characterized UF6 standards. 1.4 This test method is to replace the existing test method currently published in Test Methods C761 and is used in the nuclear fuel cycle for UF6 isotopic analyses. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息：ICS：27.120.30 (Fissile materials and nuclear fuel tech CCS：F46 发布：2010 实施：

ASTM C1742-17 通过双标准单集气气体质谱法进行六氟化铀同位素分析的标准试验方法
简介：
信息：ICS：27.120.30 CCS：发布：2017-06-01 实施：

ASTM C1411-2014 同位素分析前铀和钚离子交换分离的标准操作规程
简介：5.1x00a0;Uranium and plutonium are used in nuclear reactor fuel and must be analyzed to insure that they meet certain criteria for isotopic composition as described in Specification C833 and Specification C1008. This standard practice is used to chemically separate the same mass peak interferences from uranium and plutonium and from other impurities prior to isotopic abundance determination by thermal ionization mass spectrometry. 5.2x00a0;In those facilities where perchloric acid use is tolerated, the separation in Test Method C698 may be used prior to isotopic abundance determination. Uranium and plutonium concentrations as well as isotopic abundances using thermal ionization mass spectrometry can be determined using this separation and following Test Method C1625. 1.1x00a0;This practice is for the ion exchange separation of uranium and plutonium from each other and from other impurities for subsequent isotopic analysis by thermal ionization mass spectrometry. Plutoniumx2013;238 and uraniumx2013;238, and plutoniumx2013;241 and americiumx2013;241, will appear as the same mass peak and must be chemically separated prior to analysis. Only high purity solutions can be analyzed reliably using thermal ionization mass spectrometry. 1.2x00a0;The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3x00a0;This standard may involve hazardous material, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息：ICS：27.120.30 (Fissile materials and nuclear fuel tech CCS：发布：2014 实施：

ASTM C1030-2010 用γ射线光谱法测定钚同位素成分的标准试验方法
简介：The determination of plutonium isotopic composition by gamma-ray spectrometry is a nondestructive technique and when used with other nondestructive techniques, such as calorimetry (Test Method C1458) or neutron counting (Test Methods C1207, C1316, C1493, and C1500), can provide a wholly nondestructive plutonium assay necessary for material accountancy and safeguards needs. Because gamma-ray spectrometry systems are typically automated, the routine use of the test method is fast, reliable, and is not labor intensive. The test method is nondestructive, requires no sample preparation, and does not create waste disposal problems. This test method assumes that all plutonium in the measured item has the same isotopic distribution, often called isotopic homogeneity (see 7.2.4 and 7.2.5). The 242Pu abundance is not measured by this test method and must be estimated from isotopic correlation techniques, stream averages, historical information, or other measurement techniques. Americium-241 is a daughter product of 241Pu. The 241Am/239Pu atom ratio can also be determined by means of this test method (assuming a homogeneous isotopic distribution of plutonium and 241Am). The determination of the 241Am/239Pu atom ratio is necessary for the correct interpretation of a calorimetric heat measurement. The isotopic composition of a given batch or item of plutonium is an attribute of that item and, once determined, can be used in subsequent inventory measurements to verify the identity of an item within the measurement uncertainties. The method can also measure the ratio of other gamma-emitting isotopes to plutonium assuming they have the same spatial distribution as the plutonium in the item. Some of these x201C;otherx201D; gamma-emitting isotopes include isotopes of uranium, neptunium, curium, cesium, and other fission products. The same methods of this standard can be used to measure the isotopic composition of uranium in items containing only uranium (3, 4, 5, 6).1.1 This test method is applicable to the determination of isotopic abundances in isotopically homogeneous plutonium-bearing materials. This test method may be applicable to other plutonium-bearing materials, some of which may require modifications to the described test method. 1.2 The procedure is applicable to items containing plutonium masses ranging from a few tens of milligrams up to the maximum plutonium mass allowed by criticality limits. 1.3 Measurable gamma ray emissions from plutonium cover the energy range from approximately 30 keV to above 800 keV. K-X-ray emissions from plutonium and its daughters are found in the region around 100 keV. This test method has been applied to all portions of this broad spectrum of emissions. 1.4 The isotopic abundance of the 242Pu isotope is not directly determined because it has no useful gamma-ray signature. Isotopic correlation techniques may be used to estimate its relative abundance Refs (1) and (2). 1.5 This test method has been demonstrated in routine use for isotopic abundances ranging from 99 to x003C;50 % 239Pu. This test method has also been employed for isotopic ab......
信息：ICS：27.120.30 CCS：F50 发布：2010 实施：