单柱离子色谱法同时测定地面水中阴离子

Detecting Negative Ions of Surface Water with Single Column Ion Chromatography.

单柱离子色谱法同时测定地面水中Ｆ－、Ｃｌ－、ＮＯ－２－Ｎ、ＮＯ－３－Ｎ、ＳＯ２－４阴离子。以２．５ｍＭ苯二甲酸、２．４ｍＭ三羟甲胺缓冲液为淋洗液，在ｐＨ＝４．０，流速为１．５ｍｌ／ｍｉｎ的条件下，测得各阴离子检出限、线性回归方程及相关系数、方法的精密度和准确度。

Negative ions of surface water including F -、Cl -、NO - 2 N、NO - 3 N,SO 2- 4 were detected at the same time with single column Ion Chromatography.With the condition of cleaning solution were 2 5mM benzene dicarbonic acid and 2 4mM 3 methylol ammonia buffer solution and pH=4 0,current velocity was 1 5ml/min,the limits of detections of these negative ions,linear regression equations and correlation coefficients,the precision and accuracy of this method were detected.