离子色谱同时测定水中10种阴离子含量

目的:建立一种离子色谱检测方法,用于同时测定10种阴离子含量。方法:选用Ionpac AS23分离柱,Ionpac AG23保护柱,淋洗液为NaCO3/NaHCO3,浓度为7.0 mmol/L/0.4 mmol/L。流速1.0 ml/min。结果:在0.005~8.00 mg/L浓度范围内,各待测物的线性关系良好。结论:该方法简便、灵敏。一次进样23 min内,全部分离完全,可满足国家饮用水卫生标准及美国EPA的标准。

Simultaneous determination of 10 negtive ions in water by ion chromatography

Objective:To develop a method for simultaneous determination of 10 negtive ions in the water by ion chromatography.Methods:Ten negtive ions were separated by Ionpac AS23 column with Ionpac AG 23 with an eluent containing 7.0 mmol/L NaCO3 and 0.4 mmol/L NaHCO3.The flow rate was 1.0 ml/min.Results:The linear concentration range was 0.005~8.00 mg/L for each agent.Conclusion:The method enables efficient,sensitive and rapid analysis for both standards of EPA and the national drinking water sanitation,which simultaneously and completely separates all agents only in 23 minutes.