石油产品和润滑油 - 生物柴油 - 通过电感耦合等离子体发射光谱法（ICPOES）测定硫含量

[中文适用范围]： 本文件规定了一种电感耦合等离子体发射光谱法 (ICP-OES) 的测试方法，用于检测脂肪酸甲酯 (FAME) 中 2 mg/kg 至 21 mg/kg 的硫含量。 注 1 就本文件而言，术语“% (m/m)”用于表示材料的质量分数 (µ)。 注 2 该方法也可用于测定给定限值以外的浓度。但精度声明仅对范围内给出的浓度范围有效。 注 3 本文件中描述的方法已使用从大豆油和牛脂中提取的 FAME 进行测试。由于含硫化合物的性质不同，从其他原料（尤其是陈化油）中提取的 FAME 的行为可能有所不同。 [外文原描述]： This document specifies a test method for inductively coupled plasma optical emission spectrometry (ICP-OES) for the detection of the sulfur content from 2 mg/kg to 21 mg/kg in fatty acid methyl esters (FAME). NOTE 1 For the purposes of this document, the term "% ( m/m )" is used to represent the mass fraction ( µ ) of the material. NOTE 2 The method can also be used for the determination of concentrations outside the given limits. The precision statement, however, is only valid for the concentration range given in the scope. NOTE 3 The method described in the document was tested with FAME derived from soybean oil and beef tallow. FAME derived from other feedstock, in particular aged oils, may behave different due to the different nature of sulfur compounds.