中华人民共和国国家环境保护标准 HJ 1131—2020 固定污染源废气二氧化硫的测定 便携式紫外吸收法 Stationarysourceemission—Determinationofsulphurdioxide —Portableultravioletabsorptionmethod （发布稿） 本电子版为发布稿，请以中国环境出版集团出版的正式标准文本为准。 2020 -05 -15发布 2020 -08 -15实施 生态环境部发布 目次 前言................................................................................................................................................ii 1适用范围 ........................................................................................................................................1 2规范性引用文件 .............................................................................................................................1 3术语和定义 ....................................................................................................................................1 4方法原理 ........................................................................................................................................2 5干扰和消除 ....................................................................................................................................2 6试剂和材料 ....................................................................................................................................2 7仪器和设备 ....................................................................................................................................2 8样品 ................................................................................................................................................3 9分析步骤 ........................................................................................................................................3 10结果计算与表示 ...........................................................................................................................4 11精密度和准确度 ......................................................................................................。。。。。。以下内容略