1.1 本试验方法适用于轻质石油液体中挥发性含硫化合物的测定。本试验方法适用于最终沸点约为230的蒸馏物、汽油发动机燃料（包括含有含氧化合物的燃料）和其他石油液体 °C（450 °F）或更低。适用的浓度范围将在一定程度上变化，这取决于样品的性质和使用的仪器；然而，在大多数情况下，该试验方法适用于0.1水平下单个硫物种的测定 mg/kg至100 mg/kg。 1.2 该试验方法并不旨在识别所有单独的硫成分。 探测器对硫的响应是线性的，并且对于范围内的所有硫化合物基本上是等摩尔的( 1.1 )该试验方法；从而确定了未鉴定的和已知的单个化合物。然而，许多含硫化合物，例如硫化氢和硫醇，是反应性的，它们在样品中的浓度可能在采样和分析过程中发生变化。巧合的是，样品的总硫含量是根据所测定的单个化合物的总和来估计的；然而，该试验方法不是测定总硫的首选方法。 1.3 以国际单位制表示的数值应视为标准。SI单位后括号中给出的值仅供参考，不被视为标准值。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 硫选择性检测气相色谱法提供了一种快速识别和定量各种石油原料和产品中含硫化合物的方法。 这些材料通常含有不同数量和类型的硫化合物。许多含硫化合物有气味，对设备有腐蚀性，并抑制或破坏下游加工中使用的催化剂。在各种石油液体中鉴定含硫化合物的能力对于控制成品中的含硫化合物是有用的，并且通常比仅了解总硫含量更重要。

1.1 This test method covers the determination of volatile sulfur-containing compounds in light petroleum liquids. This test method is applicable to distillates, gasoline motor fuels (including those containing oxygenates) and other petroleum liquids with a final boiling point of approximately 230 °C (450 °F) or lower at atmospheric pressure. The applicable concentration range will vary to some extent depending on the nature of the sample and the instrumentation used; however, in most cases, the test method is applicable to the determination of individual sulfur species at levels of 0.1 mg/kg to 100 mg/kg. 1.2 The test method does not purport to identify all individual sulfur components. Detector response to sulfur is linear and essentially equimolar for all sulfur compounds within the scope ( 1.1 ) of this test method; thus both unidentified and known individual compounds are determined. However, many sulfur compounds, for example, hydrogen sulfide and mercaptans, are reactive and their concentration in samples may change during sampling and analysis. Coincidently, the total sulfur content of samples is estimated from the sum of the individual compounds determined; however, this test method is not the preferred method for determination of total sulfur. 1.3 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. 1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 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 ====== 5.1 Gas chromatography with sulfur selective detection provides a rapid means to identify and quantify sulfur compounds in various petroleum feeds and products. Often these materials contain varying amounts and types of sulfur compounds. Many sulfur compounds are odorous, corrosive to equipment, and inhibit or destroy catalysts employed in downstream processing. The ability to speciate sulfur compounds in various petroleum liquids is useful in controlling sulfur compounds in finished products and is frequently more important than knowledge of the total sulfur content alone.