1.1 本规程涵盖与元素分析用X射线荧光仪器的采样、校准和验证相关的信息，包括各种波长色散（WDXRF）和能量色散（EDXRF）技术。这种做法包括采样问题，如储存容器的选择、运输和二次采样。还包括处理、组装和搬运技术特定的样品架和杯子。描述了石油和石油产品样品中微量元素测定的分析测量和测量验证过程中的技术特定要求。关于样品混合，请参考实践 D5854 . 本规程中涵盖的石油产品被视为单相，在取样点处表现出牛顿特性。 1.2 适用试验方法- 本规程适用于ASTM元素分析小组委员会D02.03管辖下的XRF方法，以及能源研究所测试方法标准化委员会管辖下的XRF方法( 表1 ). 其中一些方法在技术上是等效的，尽管它们在细节上可能有所不同( 表2 ). 1.3 适用流体- 本规程适用于取样和储存温度低于或等于101℃时蒸汽压的石油和石油产品 千帕（14.7 psi）。使用实践 D4057号 或IP 475对这些材料进行采样。参考实践 D5842 在对同样需要测定里德蒸气压（RVP）的材料进行取样时。 1.4 不适用流体- 取样和样品储存条件下蒸汽压高于101的石油产品 kPa（14。 7. psi）和液化气体（即液化天然气、液化石油气等）不在本规程范围内。 1.5 抽样方法- 本指南不包括物理采样和从主要来源采样的方法。假设本规程涵盖的样品是一次源液体的代表性样品。参考实践 D4057号 或IP 475获取详细的采样程序。 1.6 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 1.7 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 3.1 确定化学性质需要对石油和石油产品样品进行准确的元素分析，而化学性质反过来又用于确定是否符合商业和监管规范。

1.1 This practice covers information relating to sampling, calibration and validation of X-ray fluorescence instruments for elemental analysis, including all kinds of wavelength dispersive (WDXRF) and energy dispersive (EDXRF) techniques. This practice includes sampling issues such as the selection of storage vessels, transportation, and sub-sampling. Treatment, assembly, and handling of technique-specific sample holders and cups are also included. Technique-specific requirements during analytical measurement and validation of measurement for the determination of trace elements in samples of petroleum and petroleum products are described. For sample mixing, refer to Practice D5854 . Petroleum products covered in this practice are considered to be a single phase and exhibit Newtonian characteristics at the point of sampling. 1.2 Applicable Test Methods— This practice is applicable to the XRF methods under the jurisdiction of ASTM Subcommittee D02.03 on Elemental Analysis, and those under the jurisdiction of the Energy Institute’s Test Method Standardization Committee ( Table 1 ). Some of these methods are technically equivalent though they may differ in details ( Table 2 ). 1.3 Applicable Fluids— This practice is applicable to petroleum and petroleum products with vapor pressures at sampling and storage temperatures less than or equal to 101 kPa (14.7 psi). Use Practice D4057 or IP 475 to sample these materials. Refer to Practice D5842 when sampling materials that also require Reid vapor pressure (RVP) determination. 1.4 Non-applicable Fluids— Petroleum products whose vapor pressure at sampling and sample storage conditions are above 101 kPa (14.7 psi) and liquefied gases (that is, LNG, LPG, etc.) are not covered by this practice. 1.5 Sampling Methods— The physical sampling and methods of sampling from a primary source are not covered by this guide. It is assumed that samples covered by this practice are a representative sample of the primary source liquid. Refer to Practice D4057 or IP 475 for detailed sampling procedures. 1.6 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.7 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, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 3.1 Accurate elemental analyses of samples of petroleum and petroleum products are required for the determination of chemical properties, which are in turn used to establish compliance with commercial and regulatory specifications.