离子色谱法同时测定梅雨季节降水组分  

Simultaneous Determination of Anions and Cations in Precipitation in Plum Rain Season

作　　者：潘振声[1] 许群[1] 张文[1] 

机构地区：[1]华东师范大学化学系,上海200062

出　　处：《上海环境科学》2001年第6期272-273,共2页Shanghai Environmental Sciences

摘　　要：采用单柱离子色谱系统和电导检测的方法,以丙二酸-甲醇水溶液为流动相,一次进样,即简便、有效地在30min内完成了雨水中SO2-4、Cl-、NO-3、F-、Na+、NH+4、K+、Mg2+、Ca2+9种离子的同时分离。用于梅雨季节上海某区连续降雨15h期间的雨水组分的连续测定,结果良好。还讨论了梅雨季节酸雨形成的主要因素。A simple method has been studied for continuous and simultaneous determination of anions (SO2-4, Cl-, NO-3, F-) and cations (Na+,NH+4, Mg2+, Ca2+) in precipitation which lasted for 15 hours in plum rain season, in Shanghai. The method involved ion-chromatography with conductometric detection on a weak acidic cation-exchange resin column and a weak acid eluent. Using 5.0×10-3mol/l malonic acid-methanol-water as eluent, good simultaneous separation and detection were achieved within 30 min, based on ion-exclusion and cation-exchange mechanism. The main reason of acid rain forming in plum rain season in Shanghai has also been discussed.

关 键 词：离子排斥-阳离子交换色谱 连续测定 酸雨 梅雨季节 降水组分 大气监测 

分 类 号：X831[环境科学与工程—环境工程] X830.2