ISO 18475:2023 环境固体基质 用带质量选择探测的气相色谱或带电子捕获探测的气相色谱测定多氯联苯

标准编号：ISO 18475:2023

中文名称：环境固体基质 用带质量选择探测的气相色谱或带电子捕获探测的气相色谱测定多氯联苯

英文名称：Environmental solid matrices — Determination of polychlorinated biphenyls (PCB) by gas chromatography - mass selective detection (GC-MS) or electron-capture detection (GC-ECD)

发布日期：2023-10

标准范围

本文件规定了使用GC-MS和GC-ECD定量测定土壤、污泥、沉积物、处理过的生物废物和废物中七种选定的多氯联苯（PCB28、PCB52、PCB101、PCB118、PCB138、PCB153和PCB180）的方法（见表？2）.检测限取决于决定因素、使用的设备、用于提取样品的化学品的质量和提取物的净化。在本文件规定的条件下，应用下限从1？μ g/kg（以干物质表示）对土壤、污泥和生物废物至10？固体废物可以达到μ g/kg（以干物质表示）。对于某些特定样品，10？μ g/kg达不到。污泥、废物和经处理的生物废物的性质可能不同，多氯联苯的预期污染水平和干扰物质的存在也不同。这些差异使得不可能描述一个通用程序。本文件包含基于样品特性以及所用提取和净化程序的决策表。笔记？绝缘液体、石油产品、废油和水样品中多氯联苯的分析参见EN？61619，EN？12766-1和ISO？分别为6468。该方法可用于分析范围内未指定的其他多氯联苯同系物，前提是通过适当的内部验证实验证明其适用性。

This document specifies methods for quantitative determination of seven selected polychlorinated biphenyls (PCB28, PCB52, PCB101, PCB118, PCB138, PCB153 and PCB180) in soil, sludge, sediment, treated biowaste, and waste using GC-MS and GC-ECD (see Table 2).

The limit of detection depends on the determinants, the equipment used, the quality of chemicals used for the extraction of the sample and the clean-up of the extract.

Under the conditions specified in this document, lower limit of application from 1 μg/kg (expressed as dry matter) for soils, sludge and biowaste to 10 μg/kg (expressed as dry matter) for solid waste can be achieved. For some specific samples the limit of 10 μg/kg cannot be reached.

Sludge, waste and treated biowaste may differ in properties, as well as in the expected contamination levels of PCB and presence of interfering substances. These differences make it impossible to describe one general procedure. This document contains decision tables based on the properties of the sample and the extraction and clean-up procedure to be used.

NOTE            The analysis of PCB in insulating liquids, petroleum products, used oils and aqueous samples is referred to in EN 61619, EN 12766-1 and ISO 6468 respectively.

The method can be applied to the analysis of other PCB congeners not specified in the scope, provided suitability is proven by proper in-house validation experiments.

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