1.1 本试验方法包括通过毛细管气相色谱法测定碳氢化合物溶剂中1.0至2400 vppm水平的微量苯。 注1: 可通过本试验方法测定较低水平的苯。然而，气相色谱法（GC）必须与本试验方法中规定的气相色谱法进行修改。该方法的精度可能不适用于这些较低的苯水平。 1.2 有关危险信息和指南，请参阅供应商的安全数据表。 1.3 以国际单位制表示的数值应视为声明。括号中的数值仅供参考，不一定与国际单位制数值完全等效。 1.4 为了使用本试验方法确定观察值或计算值是否符合相关规范，应按照惯例将用于表示规范限值的最后一个右手数字中的试验结果四舍五入到“最接近的单位” E29年 . 1.5 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。 1.6 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====== 4.1 该试验方法与试验方法类似 D4367 但毛细管柱用于测定烃类溶剂中痕量苯的情况除外。由于对这些材料中的苯含量进行了更严格的规定，因此需要对碳氢化合物溶剂中的微量苯进行分析。

1.1 This test method covers the determination by capillary gas chromatography of trace benzene in hydrocarbon solvents at levels from 1.0 to 2400 vppm. Note 1: Lower levels of benzene may be determined by this test method. However the gas chromatography (GC) will have to be modified from those specified in this test method. The precision of the method may not apply to these lower benzene levels. 1.2 For hazard information and guidance, see the supplier’s Safety Data Sheet. 1.3 The values stated in SI units are to be regarded as the statement. The values in parenthesis are given for information only and are not necessarily the exact equivalent of the SI unit values. 1.4 For purposes of determining conformance of an observed or a calculated value using this test method to relevant specifications, test result(s) shall be rounded off “to the nearest unit” in the last right-hand digit used in expressing the specification limit, in accordance with Practice E29 . 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 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 ====== 4.1 This test method is similar to Test Method D4367 with the exception that capillary columns are used and intended for trace level of benzene in hydrocarbon solvents. The need for trace benzene analysis in hydrocarbon solvents arose because of the increase of more stringent regulation of benzene level in these materials.