文档介绍：中华人民共和国国家环境保护标准
HJ 537-2009
代替 GB 7478-87
水质氨氮的测定蒸馏-中和滴定法
Water quality―Determination of ammonia nitrogen―
Distillation-neutralization titration
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。
2009-12-31 发布 2010-04-01 实施
环境保护部发布
目次
前言......................................................................................................................................................II
1 适用范围................................................................................................................................................... 1
2 方法原理................................................................................................................................................... 1
3 干扰及消除............................................................................................................................................... 1
4 试剂和材料............................................................................................................................................... 1
5 仪器和设备............................................................................................................................................... 3
6 样品........................................................................................................................................................... 3
7 分析步骤.......