亚硝胺前体物来源和解析方法研究进展

Research Progress on the Source and Analysis Method of Nitrosamine Precursors

亚硝胺是一类新型消毒副产物(DBPs),主要由氯胺等消毒剂与源水中前体物反应生成。亚硝胺前体物来源广泛、种类复杂,是当前国内外消毒副产物研究领域的前沿热点。综述了亚硝胺前体物的检出情况、主要来源、解析方法,并着重介绍了极性快速分析法(PRAM)。研究表明,PRAM是比经典的树脂分级法更加高效快速的有机物宏观性质解析方法,借助该方法能够获得亚硝胺前体物的基本结构特点,并有助于分析主要水处理工艺对亚硝胺前体物的去除机理。

Nitrosamines are a type of emerging disinfection by-products(DBPs),which are mainly formed during the reaction of disinfectants(especially chloramines)with precursors in source waters.The nitrosamine precursors have a wide range of sources and complex types,which has been one of the frontiers and hotspots in the water research filed of disinfection by-products at home and abroad.The occurrence,main sources and characterization methods of nitrosamine precursors were summarized,and the polarity rapid assessment method(PRAM)was introduced in details.The PRAM is a more efficient and rapid method for fractionalizing the bulk organic matter in water according to their polarity and electrical property than the classical resin fractionation method.The basic structure of nitrosamine precursors could be obtained utilizing PRAM as well as their removal mechanism by various water treatment technologies.