基于胺类偶联反应测定痕量亚硝酸盐的研究－2．5次微分电分析法测定NO_2~－  

Determination of Trace Amount Nitrite Based on the Amine Azo-Reaction:Determination of Nitrite by the 2.5th Order Differential Electroanalysis

作　　者：王耀光[1] 齐秀贞[1] 王素玉[1] 刘文敏[1] 

机构地区：[1]福州大学化学系

出　　处：《福州大学学报（自然科学版）》1994年第5期84-88,共5页Journal of Fuzhou University(Natural Science Edition)

摘　　要：研究了在微酸性溶液中，萘胺与对氨基苯乙酮的重氮盐在室温下，形成偶氮化合物的实验条件，建立了一个极其灵敏的快速测定ＮＯ_２~－的新方法。在２０×１０^（－１０）～１．０×１０^（－８）ｇ／ｍＬ浓度范围内，峰高与ＮＯ_２~－离子浓度呈良好的线性关系。本方法用于直接测定水样中ＮＯ_２~－含量，获得满意结果。in this paper,the optimum experimental conditions are studied for the formation of azo-compound of diazonium salt derived from paminoacetophenone and naphthylamine in acidic medium.A sensitive and quick method to determine nitrite has been established.The linear range is 2.0×10￣(-10)￣1.0×10￣(-8)g/ mL.Several water samples have been directly analyzed by the recommended procedure and a satisfactory result was obtained.

关 键 词：亚硝酸盐 偶联反应 胺类 测定 微分电分析法 

分 类 号：O613.610.6[理学—无机化学]