1.1 本试验方法包括用气相色谱法测定0.01至1体积水平的苯 % 在碳氢化合物溶剂中。 注1: 苯含量低于0.01体积 %, 使用测试方法 D6229 . 1.2 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.3 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，应根据实践修约方法，将用于表示规范极限的最后一个右手数字中的试验结果修约为“最接近的单位” E29年 . 1.4 有关危险信息和指南，请参阅供应商的材料安全数据表。 有关具体的危险说明，请参阅第节 7. . 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 苯被归类为有毒致癌物质。了解该化合物的浓度可能有助于评估处理和使用碳氢化合物溶剂的人员可能面临的健康危害，但本试验方法并不旨在评估此类危害。

1.1 This test method covers the determination by gas chromatography of benzene at levels from 0.01 to 1 volume % in hydrocarbon solvents. Note 1: For benzene levels lower than 0.01 volume %, use Test Method D6229 . 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 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 the rounding-off method of Practice E29 . 1.4 For hazard information and guidance, see the supplier's Material Safety Data Sheet. For specific hazard statements, see Section 7 . 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 Benzene is classed as a toxic and carcinogenic material. A knowledge of the concentration of this compound may be an aid in evaluating the possible health hazards to persons handling and using hydrocarbon solvents, but this test method is not intended to evaluate such hazards.