文档介绍：中华人民共和国国家环境保护标准HJ535-2009代替GB7479-87水质氨氮的测定纳氏试剂分光光度法Waterquality―Determinationofammonianitrogen―Nessler’sreagentspectrophotometry2009-12-31发布环境保护部2010-04-01实施发布目次前 言.........................................................................................................................................III1 适用范围.......................................................................................................................................12 方法原理.......................................................................................................................................13 干扰及消除...................................................................................................................................14 试剂和材料...................................................................................................................................15 仪器和设备...................................................................................................................................36 样品...............................................................................................................................................37 分析步骤.......................................................................................................................................48 结果计算.................................................................................................