【摘要】 目的建立同时测定饮用水中5种消毒副产物（ClO₂^-、ClO₃^-、BrO₃^-、二氯乙酸、三氯乙酸）的离子色谱测定方法。方法采用英蓝超滤在线样品前处理装置直接大体积进样,进样体积为100μl,Metrohm-940型离子色谱仪,电导检测器测定。流动相为乙腈-3.6 mmol/L碳酸钠溶液（10∶90,V/V）;流速为0.7 ml/min。结果五种消毒副产物线性相关系数≥0.9995,加标回收率为83.3%～116.7%,RSD≤5%,方法的定量限为:ClO₂^-:0.10 mg/L、BrO₃^-:0.002 mg/L、ClO₃^-:0.10 mg/L、二氯乙酸:0.010 mg/L、三氯乙酸:0.020 mg/L。结论该法准确度好,灵敏度高,简单方便,适用于水中5种消毒副产物的同时测定。更多还原

【Abstract】 Objective To establish a method of analyzing five disinfection by-products（DBPs）（ClO₂^-,ClO₃^-,BrO₃^-,DCAA,TCAA）in drinking water by ion chromatography.Methods The samples were determined by Metrohm-940 ion chromatography with inline filtration and conductivity detector.The injection volume was 100 μl.The mobile phase was acetonitrile-3.6 mmol/L Na₂CO₃（10∶90,V/V）.The mobile speed was 0.7 ml/min.Results The method had good linearity（γ≥0.9995）.The samples’ rates of recovery were 83.3%～116.7%.RSD was below 5%.The limits of quantitation were ClO₂^-:0.10 mg/L,BrO₃^-:0.002 mg/L,ClO₃^-:0.10 mg/L,DCAA:0.010 mg/L,TCAA:0.020 mg/L.Conclusion The method is simple,sensitive,accurate and reproducible,which is suitable for analyzing five DBPs in drinking water simultaneously.更多还原