1.1 本试验方法包括AMS（α-甲基苯乙烯）聚合物含量的测定。二聚体和三聚体不通过这些测试方法进行测量。 1.2 已发现该试验方法适用于测定浓度高达15的AMS的聚合物含量 mg/kg，LOQ为0.6 mg/kg，LOD为0.2 mg/kg，基于 表1 含有超过15mg/kg聚合物的样品必须在测量前进行适当稀释。 1.3 在使用该方法确定测试结果是否符合适用规范时，应根据四舍五入对结果进行四舍五舍五入- 非实践方法 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。 有关具体的危险说明，请参阅第节 8. . 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====== 4.1 该试验方法可用于测定AMS单体中聚合物的浓度。 4.2 此测试方法无法检测二聚体和三聚体。 4.3 此测试方法可用于工厂控制和规格分析。有关工厂控制和规格分析的信息可以在测试方法中找到 第6367页 .

1.1 This test method covers the determination of the polymer content of AMS (α-Methylstyrene). Dimers and trimers are not measured by these test methods. 1.2 This test method has been found applicable to determining the polymer content of AMS in concentrations up to 15 mg/kg with an LOQ of 0.6 mg/kg and an LOD of 0.2 mg/kg based on the data in Table 1 . Samples containing more than 15 mg/kg of polymer must be suitably diluted before measurement. 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. For specific hazard statements, see Section 8 . 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 can be used for determining polymer concentrations in AMS monomer. 4.2 This test method will not detect dimers and trimers. 4.3 This test method can be used for plant control and for specification analysis. Information regarding plant control and specification analysis can be found in test method D6367 .