离子色谱法同时测定水中5种消毒副产物  

Simultaneous determination of five DBPs in water by ion chromatography

作　　者：王红伟[1] 闫惠珍[1] 林少彬[1] 

机构地区：[1]中国疾病预防控制中心环境与健康相关产品安全所,北京100021

出　　处：《中国卫生检验杂志》2009年第3期558-559,共2页Chinese Journal of Health Laboratory Technology

摘　　要：目的：采用离子色谱法同时测定生活饮用水及水源水中亚氯酸盐、溴酸盐、二氯乙酸（DCAA）、氯酸盐和三氯乙酸（TCAA）离子的方法研究。方法：该方法所用色谱柱为AS19色谱分离柱,流速0.8 ml/min;抑制器电流65 mA,直接进样,进样量为240μl,柱温30℃,电导检测,峰面积定量。梯度淋洗条件：0～14 min 8 mmol/L KOH淋洗液,14～29 min 8～45 mmol/L KOH淋洗液,29～32 min 8 mmol/L KOH淋洗液。结果：测定方法相关性好（r〉0.997）,线性范围宽,精密度高（RSD〈2.86%）,准确度好。结论：方法简便、快速,无干扰,灵敏度高,有较高的实用价值。Objective：To establish a new method for quantitative detection of 5 DBPs in drinking water and resource water including chlorite,bromate,DCAA,chlorate and TCAA at the same time by ion chromatography.Methods：The analysis was carried out on an IonPac AS19 column with KOH solution as gradient eIution.The content of KOH was 8 mmol/L at the beginning for 8 min,then gradually changed from 8 mmol/L to 45 mmol/L within 15 min,and vary to 8 mmol/L after 29 min,and maintained for 8 min.The flow rate was 0.8 ml/min,the current of suppressed conductivity detection was 65 mA and the temperature of column was 30℃.The samples was inject directly and the injection volume was 240 μl.Results：The method with wide linear range achieved good linearities（r〉0.997）.The relative standard deviation was below 2.86%.Conclusion：The method with satisfactory results is simple,rapid,lowly disturbing and highly sensitive in detecting 5 DBPs.

关 键 词：离子色谱 阴离子 

分 类 号：O657.75[理学—分析化学]