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γ-(4-硝基苄基)吡啶(简称NPB)是一种十分灵敏的烷化剂分析试剂,但该试剂与烷化剂一定要在加热条件下才能反应,而且在含有象氯一类的强氧化剂的介质中会受到破坏,致使分析不能进行。然而,对于被烷化剂所污染的水,却常用漂白粉,漂白精、氯气、氯胺以及三合二(3Ca(ClO)_2·2Ca(OH)_2)等含氯强氧化剂进行破坏消毒。为此,研究一种以NPB为试剂,在常温下鉴定与估测含氯水中微量烷化剂的分析方法是十分必要的。
γ- (4-nitrobenzyl) pyridine (referred to as NPB) is a very sensitive alkylating reagent, but the reagent and the alkylating agent must be heated under the conditions in order to react, and in the like containing chlorine Of the strong oxidizer medium will be destroyed, resulting in the analysis can not be carried out. However, water contaminated with alkylating agents is often destroyed by bleaching powder, bleach, chlorine, chloramine, and chlorine-containing strong oxidizing agents such as tricalcium phosphate (3Ca (ClO) 2 · 2Ca (OH) 2) Therefore, it is necessary to study a method for the analysis and identification of trace alkylating agents in chlorinated water using NPB as a reagent at room temperature.