标准摘要
[中文适用范围]： 本标准规定了离子色谱法测定工作场所空气中硫酸和磷酸时间加权平均质量浓度的方法。 通过电导率检测阴离子。 该方法适用于 ISO 7708 中定义的空气颗粒物个人采样以及静态（区域）采样。 本方法不适用于三氧化硫的测定。 如果工作场所空气中存在酸及其相应的盐，则该程序不会区分两者。 如果工作场所空气中存在磷酸和五氧化二磷（磷酸酐），则该程序无法区分两者。 [外文原描述]： This document specifies a method for the determination of the time-weighted average mass concentration of sulfuric acid and phosphoric acid in workplace air by ion chromatography. The anions are detected by conductivity. The method is applicable to the personal sampling of airborne particles, as defined in ISO 7708, and to static (area) sampling. The method does not apply to the determination of sulfur trioxide. The procedure does not differentiate between the acids and their corresponding salts if both are present in the workplace air. The procedure does not differentiate between phosphoric acid and diphosphorus pentoxide (phosphoric anhydride) if both are present in the workplace air.
英文名称Workplace atmospheres — Determination of inorganic acids by ion chromatography — Part 1: Non-volatile acids (sulfuric acid and phosphoric acid)