微珠比色法测定水样中的NO_2^-  

THE APPLICATION OF MICROBEAD COLORIMETRIC METHOD TO EXAMINATION OF NO_2 IN WATER SAMPLE

作　　者：赵蓓蕾[1] 王学伟 

机构地区：[1]云南国土资源职业学院,云南昆明650217 [2]云南省有色地质局测试中心,云南昆明650216

出　　处：《云南地质》2014年第2期282-286,共5页Yunnan Geology

摘　　要：NO2-容易和二级胺反应生成致癌物质。现行的NO2-的测定方法灵敏度不高,采用对氨基苯甲醛与NO2-发生重氮反应后,与盐酸萘乙二胺偶联,最后用微珠法目视比色,方法灵敏度高,选择性强,最低检出限为2 ng,可用于地表水、土壤及食品提取液中NO2-的测定。NO2 is easy to react on secondary amine and form the carcinogen. The sensibility of present NO2 examination method isn＇t high enough. We apply the diazo reaction of NO2 with para aminotenzaidehyde, then coupling with NETH, last visual colorimetry by microbead method. The sensibility of this method is high, selectivity intense, the minimum detection limit 2 ng, which can be applied to NO2 examination of surface water, soil and food abstraction fluid.

关 键 词：NO2- 微珠比色 测试 

分 类 号：O622[理学—有机化学]