1.1 本试验方法涵盖芳烃及其混合物中总氟、氯和硫的单独测定。含0.10的样品 mg/kg至10 可以分析每种元素的毫克/千克。 1.2 通过在适当的溶剂中稀释样品，使氟、氯和硫的总浓度在试验方法涵盖的范围内，该方法可应用于范围外的样品浓度。然而，分析员有责任验证样品在溶剂中的溶解度，以及稀释样品的结果是否符合该方法的精度和准确性。 1.2.1 为了使检测限值低于1.0，必须特别考虑 mg/kg。仪器必须清洁并妥善维护，以解决潜在的 污染或携带，或两者兼有。 应完成多次连续注射，直到获得稳定的背景。当对至少三个连续系统空白的分析具有等于或小于5%的感兴趣阴离子的区域计数RSD时，认为实现了稳定的背景。 1.3 在使用该方法确定测试结果是否符合适用规范时，应根据实践中的舍入方法对结果进行舍入 第29页 . 1.4 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 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。 参见第节 9 . 1.6 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 芳烃基质中所含的总氟、氯和硫会导致排放，对许多催化化学过程有害，并导致腐蚀。本试验方法可用于测定芳烃及其混合物中的总硫和卤素。当监管机构使用基于性能的标准可接受时，可将结果用于合规性确定。

1.1 This test method covers the individual determination of total fluorine, chlorine, and sulfur in aromatic hydrocarbons and their mixtures. Samples containing 0.10 mg/kg to 10 mg/kg of each element can be analyzed. 1.2 This method can be applied to sample concentrations outside the range of the scope by dilution of the sample in an appropriate solvent to bring the total concentrations of fluorine, chlorine, and sulfur within the range covered by the test method. However, it is the responsibility of the analyst to verify the solubility of the sample in the solvent and that the diluted sample results conform to the precision and accuracy of the method. 1.2.1 Special considerations must be made in order to attain detection limits below 1.0 mg/kg in a sample. The instrument must be clean and properly maintained to address potential sources of contamination, or carryover, or both. Multiple sequential injections shall be completed until a stable background is attained. A stable background is considered to be achieved when the analysis of a minimum of three consecutive system blanks have area counts equal to or less than 5 % RSD for the anions of interest. 1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29 . 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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. See Section 9 . 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 ====== 5.1 The total fluorine, chlorine, and sulfur contained in aromatic hydrocarbon matrices can contribute to emissions, be harmful to many catalytic chemical processes, and lead to corrosion. This test method can be used to determine total sulfur and halogens in aromatic hydrocarbons and their mixtures. The results can be used for compliance determinations when acceptable to a regulatory authority using performance based criteria.