中华人民共和国国家环境保护标准 HJ 688-2019 代替 HJ 688-2013 固定污染源废气氟化氢的测定 离子色谱法 Stationarysourceemission—Determinationofhydrogenfluoride —Ionchromatography （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。 2019 -12 -31发布 2020 -06 -30实施 生态环境部发布 目次 前言............................................................................................................................................ii 适用范围 ........................................................................................................................................1 规范性引用文件 .............................................................................................................................1 术语和定义 ....................................................................................................................................1 方法原理 ........................................................................................................................................1 干扰和消除 ....................................................................................................................................2 试剂和材料 ....................................................................................................................................2 仪器和设备 ....................................................................................................................................2 样品 ................................................................................................................................................3 分析步骤 ........................................................................................................................................5 结果计算与表示 ...........................................................................................................................6 精密度和准确度 ...........................................................................................................................7 质量保