离子色谱法同时测定雨水中5种阴离子研究

[目的]为酸雨中常见污染物的准确测定提供参考。[方法]采用离子色谱法测定雨水样品中常见阴离子的含量,并对色谱条件进行了优化。[结果]最佳色谱条件为：YIC-8型离子色谱仪和AJS-10型阴离子分离柱,1.5mmol/LNa2CO3和1.4mmol/LNaHCO3的混合液为淋洗液,流速1.5ml/min,检测器为抑制电导检测器。从雨水样品中共检测到F^-、Cl^-、NO2^-、NO3^-、SO24-5种阴离子,未检测到Br^-和HPO4^2-;5种阴离子的检出限为0.2～50.0μg/ml,平均加标回收率为97.0%～101.2%,相对标准偏差均小于4%。[结论]建立了离子色谱法同时测定雨水中5种阴离子的方法。

Simultaneous Determination on 5 Anions in Rainwater with Ion Chromatography

[Objective]The aim was to provide references for the accurate determination of common pollutants in acid rain. [Method]The contents of common anions in rainwater samples were determined with ion chromatography and the chromatographic condition was optimized. [Result]The optimum chromatographic condition was as follows:YIC-8 ion chromatograph and AJS-10 anion partition column were used,the mixture solution of 1. 5 mmol/L Na2CO3 and 1. 4 mmol/L NaHCO3 was used as elutriant,the flow rate was 1. 5 ml/min and th...