摘要
目的建立了离子色谱法同时测定饮用水中一溴乙酸、二溴乙酸、二氯乙酸、三氯乙酸和亚氯酸盐的方法。方法水样经0.22μm水系微孔滤膜后进样,进样体积为500μL,利用KOH溶液梯度淋洗,IonPac AS19阴离子色谱柱分离,柱温为30℃,用电导检测器测定,抑制器电流为75 mA。结果亚氯酸盐、一溴乙酸、二溴乙酸、二氯乙酸和三氯乙酸在10~1000μg/L范围内线性良好,r>0.9990,检出限(3S/N)分别为0.32,0.76,1.30,0.69,1.58μg/L,加标回收率为80%~110%,相对标准偏差均<5.0%。结论方法操作简单,灵敏度高,可以满足饮用水中四种卤乙酸和亚氯酸盐的检测要求,本方法可以用于饮用水中四种卤乙酸和亚氯酸盐的检测。
Objective A method for simultaneous determination of MBAA,DBAA,DCAA,TCAA and ClO2-in drinking water was established by ion chromatography.Methods The water samples were determined by 0.22μm qeuosystem filter membrane with a volume of 500μL.The samples were rinsed with KOH solution gradient and separated by IonPac AS19 anion column.The column temperature was set at 30℃,and the current of the inhibitor was 75 mA.Results The results showed that the linearity ranges of ClO2-,MBAA,DBAA,DCAA and TCAA were found in the range of 10~1000μg/L,r>0.9990,with detection limits(3 S/N)of 0.32,0.76,1.30,0.69,1.58μg/L.The standard recoveries were 80%~110%and RSD(n=6)of the determined values were all less than 5.0%.Conclusion The method was simple,sensitive,can meet the detection requirements of four kinds of Haloaeetic Acids and Chlorite in drinking water.The method can be used for the determination of kour kinds of haloaeetic acids and chlorite in drinking water.
作者
尤妍
丁仙林
李炜鑫
YOU Yan;DING Xian-Lin;LI Wei-Xin(Luqiao District Center for Disease Control and Prevention,Taizhou 318050,China)
出处
《实验室检测》
2024年第2期18-22,共5页
Laboratory Testing
关键词
离子色谱
四种卤乙酸
亚氯酸盐
饮用水
ion chromatography
four kinds of haloaeetic acids
chlorite
drinking water
