ISO 16740-2005 工作场所空气.气载颗粒物质中六价铬的测定.用二苯基卡巴胼的离子色谱法和光谱测定法

标准号：ISO 16740-2005
中文标准名称：工作场所空气.气载颗粒物质中六价铬的测定.用二苯基卡巴胼的离子色谱法和光谱测定法
英文标准名称：Workplace air - Determination of hexavalent chromium in airborne particulate matter - Method by ion chromatography and spectrophotometric measurement using diphenyl carbazide
标准类型：Z15
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：Z15
国际标准分类号：13.040.30
适用范围：This International Standard specifies a method for the determination of the time-weighted average massconcentration of hexavalent chromium in workplace air.Separate sample preparation methods are specified for the extraction of soluble and insoluble hexavalentchromium. The method for insoluble hexavalent chromium can also be used to prepare samples fordetermination of total hexavalent chromium, if desired.This International Standard 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 determinationof masses of 0,01 μg to 10 μg of hexavalent chromium per sample, without dilution.The concentration range of hexavalent chromium in air for which the measuring procedure is applicable isdetermined by the sampling method selected by the user (see 10.1). For a 1 m3 air sample, without sampledilution, the working range is approximately 0,01 μg⋅m−3 to 10 μg⋅m−3.