HJ668-2013水质总氮的测定流动注射-盐酸萘乙二胺分光光度法.pdf

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1、中华人民共和国国家环境保护标准HJ668-2013水质总氮的测定流动注射-盐酸萘乙二胺分光光度法Waterquality-Determinationoftotalnitrogenbyflowinjectionanalysis（FIA）andN-(1-naphthyl)ethylenediaminedihydrochloridespectrophotometry（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。2013-10-25发布2014-01-01实施环境保护部发布目次前言............

2、.....................................................................................................................................II1适用范围.............................................................................................................................

3、.....12规范性引用文件......................................................................................................................13方法原理...............................................................................................................................

4、...14干扰和消除..............................................................................................................................15试剂和材料..........................................................................................................................

5、....26仪器和设备..............................................................................................................................37样品............................................................................................................................

6、..............38分析步骤..................................................................................................................................39结果计算与表示..........................................................................................................

7、............410精密度和准确度......................................................................................................................411质量保证和质量控制..............................................................................................................512

8、注意事项..................................................................................................................................6附录A（资料性附录）