表面活性剂在紫外光谱法测定废水中叠氮根含量的应用研究

Application Study on Surface Active Agent in Determination of Azide Ion in Wastewater by UV Spectrophotometric Method

介绍了表面活性剂在紫外分光光度法测定起爆药厂叠氮化钠生产废水中叠氮根离子（Ｎ－３）含量时的应用研究。为了增加测量灵敏度，经研究选择，确定使用表面活性剂Ｎ－氯代十六烷基吡啶（ＣＰＣ）作为增敏剂，结果使最大吸收波长处的摩尔吸光系数增加约４倍，而且该波长向长波方向移动１０ｎｍ左右。研究结果还表明，ＣＰＣ的加入同时还增强了测量体系的抗干扰能力。

This paper presents the application in surface active agent in determination of azide ion in wastewater from sodium azide workshop of primary explosive plant by UV spectrophotometric method.The reactant CS 2N 3 from N 3 with CS 2 is measured to get a good absorption peak,on which the molar absorptivity ε max at the maxium absorption wave length is 10 3 order of magnitude only.To increase determinative sensibility,the surface active agent cetyl pyridinium chloride (CPC)is chosen as hyperchromic agent through experiments. The analytic results show that the ε max value is about four times bigger than that of the original one and the determinative wave length shifts about 10nm to long wave direction as CPC is put into determined system. Additionally,the anti interference ability of the system goes up too.