ISO 16740:2005 车间空气 空气中的微粒子物质中六价铬的测定-采用离子色谱分析法和使用二苯卡巴肼分光光度分析的测量方法

标准编号：ISO 16740:2005

中文名称：车间空气 空气中的微粒子物质中六价铬的测定-采用离子色谱分析法和使用二苯卡巴肼分光光度分析的测量方法

英文名称：Workplace air — Determination of hexavalent chromium in airborne particulate matter — Method by ion chromatography and spectrophotometric measurement using diphenyl carbazide

发布日期：2005-02

标准范围

ISO 16740:2005规定了工作场所空气中六价铬的时间加权平均质量浓度的测定方法。对于可溶和不可溶六价铬的提取，规定了单独的样品制备方法。如果需要，不溶性六价铬的方法也可用于制备用于测定总六价铬的样品。ISO 16740:2005适用于ISO 7708中定义的空气颗粒物可吸入部分的个人采样和静态（区域）采样。该分析方法适用于在不稀释的情况下，测定每个样品中0.01微克至10微克六价铬的质量。适用测量程序的空气中六价铬的浓度范围由用户选择的取样方法确定。对于1立方米的空气样品，在没有样品稀释的情况下，工作范围约为0,01微克/立方米至10微克/立方米。

ISO 16740:2005 specifies a method for the determination of the time-weighted average mass concentration of hexavalent chromium in workplace air.Separate sample preparation methods are specified for the extraction of soluble and insoluble hexavalent chromium. The method for insoluble hexavalent chromium can also be used to prepare samples for determination of total hexavalent chromium, if desired.ISO 16740:2005 is applicable to the personal sampling of the inhalable fraction of airborne particles, as defined in ISO 7708, and to static (area) sampling. The analytical method is applicable to the determination of masses of 0,01 micrograms to 10 micrograms of hexavalent chromium per sample, without dilution.The concentration range of hexavalent chromium in air for which the measuring procedure is applicable is determined by the sampling method selected by the user. For a 1 cubic metre air sample, without sample dilution, the working range is approximately 0,01 micrograms per cubic metre to 10 micrograms per cubic metre.

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