中华人民共和国国家环境保护标准HJ828—2017代替GB11914-89水质化学需氧量的测定重铬酸盐法Waterquality-Determinationofthechemicaloxygendemand-Dichromatemethod（发布稿）2017-03-30发布2017-05-01实施环境保护部发 布i目次前言.....................................................................................................................................................ii1适用范围.............................................................................................................................................12规范性引用文件.................................................................................................................................13术语和定义.........................................................................................................................................14方法原理.............................................................................................................................................15干扰和消除.........................................................................................................................................26试剂和材料.........................................................................................................................................27仪器和设备.........................................................................................................................................38样品.....................................................................................................................................................49分析步骤.............................................................................................................................................410结果计算与表示...............................................................................................................................511精密度和准确度............................................................................................................................
