ISO 24384:2024 水的质量 水中铬（VI）和铬（III）的测定 螯合预处理后用带电感耦合等离子体质谱的液相色谱法（LC-ICP-MS）

标准编号：ISO 24384:2024

中文名称：水的质量 水中铬（VI）和铬（III）的测定 螯合预处理后用带电感耦合等离子体质谱的液相色谱法（LC-ICP-MS）

英文名称：Water quality — Determination of chromium(VI) and chromium(III) in water — Method using liquid chromatography with inductively coupled plasma mass spectrometry (LC-ICP-MS) after chelating pretreatment

发布日期：2024-02

标准范围

本文件规定了螯合预处理后，通过液相色谱电感耦合等离子体质谱（LC-ICP-MS）测定水中六价铬【Cr（VI）】和三价铬【Cr（III）】的方法。本方法适用于废水、地表水、地下水或饮用水中溶解的Cr（Ⅵ）和Cr（Ⅲ）的测定，从0、20？微克/升至500？μ g/l每种化合物的铬（Cr）质量。可以在适当稀释样品后分析含有浓度高于工作范围的Cr的样品。

This document specifies a method for the determination of hexavalent chromium [Cr(VI)] and trivalent chromium [Cr(III)] in water by liquid chromatography with inductively coupled plasma mass spectrometry (LC-ICP-MS) after chelating pretreatment.

This method is applicable to the determination of Cr(VI) and Cr(III) dissolved in wastewater, surface water, groundwater, or drinking water from 0,20 μg/l to 500 μg/l of each compound as chromium (Cr) mass. Samples containing Cr at concentrations higher than the working range can be analysed following appropriate dilution of the sample.

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