本文件规定了皮革和加工助剂中烷基酚（壬基酚和辛基酚）和烷基酚乙氧基化物（壬基酚乙氧基化物和辛基酚乙氧基化物）的测定方法。分析基于高效液相色谱（HPLC）或气相色谱-质谱（GC-MS）。 通过裂解烷基酚乙氧基化物并测量释放的烷基酚，对烷基酚乙氧基化物进行分析。 注:ISO 18218-1和本文件使用不同的溶剂从皮革中提取乙氧基化烷基酚。因此，对于皮革中乙氧基化烷基酚的含量，这两种分析方法的趋势相似，但绝对结果不一定相同。

This document specifies a method for determining alkylphenols (nonylphenol and octylphenol) and alkylphenol ethoxylates (nonylphenol ethoxylate and octylphenol ethoxylate) in leather and process auxiliaries. The analysis is based on high-performance liquid chromatography (HPLC) or gas chromatography-mass spectrometry (GC-MS). The analysis of the alkylphenol ethoxylate is made by cleaving the alkylphenol ethoxylate and measuring the released alkylphenol. NOTE ISO 18218-1 and this document use different solvents for the extraction of the ethoxylated alkylphenols from leather. Consequently, the two analytical methods are expected to give similar trends but not necessarily the same absolute result for the ethoxylated alkylphenol content in leather.