水质 游离氯和总氯的测定

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1、中华人民共和国国家标准GB××××-××××代替GB11898-89水质游离氯和总氯的测定N,N-二乙基1,4-苯二胺分光光度法Waterquality-Determinationoffreechlorineandtotalchlorine-TitrimetricmethodusingN,N-diethyl-1,4-phenylenediamine（征求意见稿）200×-××-××发布200×-××-××实施国家质量监督检验检疫总局发布环境保护部目次前言.........................................

2、..............................................................................II1适用范围..................................................................................................................12规范性引用文件..............................................................

3、........................................13术语和定义..............................................................................................................14方法原理...........................................................................................................

4、.......25试剂和材料..............................................................................................................26仪器和设备..............................................................................................................37干扰及消除......................

5、........................................................................................48样品..........................................................................................................................49分析步骤..................................................

6、................................................................510结果计算................................................................................................................511精密度和准确度.............................................................................

7、.......................612质量保证和质量控制............................................................................................7附录A(规范性附录)一氯胺、二氯胺和三氯化氮三种形式化合氯的分别测定.8附录B（规范性附录）水质游离氯和总氯的测定N,N-二乙基-1,4-苯二胺现场测定法.................................................................

8、.....................................................10I前言为贯彻《中华人民共和国环境保护法》和《中华人民共和国水污染防治法》，保护环境，保障人体健康，规范水中游离