一、引言N—亚硝胺是大家所公认的化学致癌物之一。在食品方面,对亚硝胺的分析报导较多,但对水中 N—亚硝胺分析研究报导甚少,甚至水环境中是否存在 N—亚硝胺,仍有争议。国外有人报导在粪便、污水、湖水中均含有亚硝胺。第二松花江水域污染较为严重,江水中是否含有 N—亚硝胺是需要认真解决的问题。它将对癌症的防治及江水治理提供必要的数据。为此,我们进行了“二松”部分水域 N—亚硝胺的分析测定工作。亚硝胺的分析测定,目前尚无统一的方法,问题较多,主要是样品含量很低,特别是水样中含量更低(一般在 PPb 级),因而需要处理大量的水样,且提取、分离、浓缩,手续繁杂,易于丢失,不易测定。据目前报导,较为理想的检测手段是色——质联用。由于国内实 I. Introduction N-nitrosamine is one of the recognized chemical carcinogens. In the aspect of food, there are many reports on the analysis of nitrosamines, but there is still little discussion on the analysis of N-nitrosamines in water and even the presence of N-nitrosamines in water environment. Foreign reports of manure, sewage, lake water contains nitrosamines. The second Songhua River waters polluted more seriously, whether the river contains N-nitrosamine is a serious problem to be solved. It will provide the necessary data for cancer prevention and treatment. To this end, we carried out the “two loose ” part of the waters of N-nitrosamines analysis and determination. Analysis of nitrosamines, there is no uniform method, the problem is more, mainly the sample content is very low, especially in the water sample content is lower (usually in the PPb level), which need to deal with a large number of water samples, and extraction , Separation, concentration, complicated procedures, easy to lose, not easy to measure. According to the current report, the more ideal means of detection is color - mass combination. Due to domestic real