中华人民共和国国家环境保护标准HJ550—2015代替HJ550-2009水质钴的测定5-氯-2-(吡啶偶氮)-1，3-二氨基苯分光光度法Waterquality-Determinationofcobalt-5-Cl-PADABSpectrophotometry(发布稿)本电子版为发布稿。请以中国环境科学出版社出版的正式标准文本为准。2015-04-03发布2015-07-01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.................................................................................................................................16试剂和材料.................................................................................................................................27仪器和设备.................................................................................................................................38样品.............................................................................................................................................39分析步骤.....................................................................................................................................310结果计算与表示.........................................................................................................................411精密度和准确度.........................................................................................................................512质...
