ISO 18218-1:2023-皮革.乙氧基烷基酚（APEO）的测定.第1部分:直接法-国家数字标准馆

现行 ISO 18218-1:2023

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Leather — Determination of ethoxylated alkylphenols (APEO) — Part 1: Direct method 皮革.乙氧基烷基酚（APEO）的测定.第1部分:直接法

发布日期： 2023-06-12

本文件是一种测定乙氧基化烷基酚（APEO）【壬酚乙氧基化物（NPEOn，其中2？≤？n≤16）和辛基酚乙氧基化物（OPEOn，其中2？≤？n≤16）】在皮革中。当要检查大量皮革样品中乙氧基化烷基酚的存在时，这种直接方法尤其适用。
该方法需要使用液相色谱(LC)和三重四极杆质谱仪(MS/MS)来鉴定和定量乙氧基化烷基酚。
笔记？1？在皮革工业中，最常用的乙氧基化烷基酚是NPEO，平均为9 EO。在典型的皮革加工温度为40？℃至55℃？°C。
笔记？2？本文件和ISO？18218-2使用不同溶剂从皮革中提取乙氧基化烷基酚。因此，预计这两种分析方法对皮革中乙氧基化烷基酚含量的趋势相似，但绝对结果不一定相同。

This document is a method for determining ethoxylated alkylphenols (APEO) [nonyphenol ethoxylate (NPEOn, where 2？≤？n ≤ 16) and octylphenol ethoxylate (OPEOn, where 2？≤？n ≤ 16)] in leather. This direct method is especially suitable when a larger number of leather samples are to be checked for the presence of ethoxylated alkylphenols.
This method requires the use of liquid chromatography (LC) with a triple quadrupole mass spectrometer (MS/MS) to identify and quantify the ethoxylated alkylphenols.
NOTE？1？In the leather industry, the most commonly used ethoxylated alkylphenol is the NPEO, with an average of 9 EO. It has an optimum cloud point in water for the typical leather processing temperatures of 40？°C to 55？°C.
NOTE？2？This document and ISO？18218-2 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.