采用离子色谱法测定水中溴离子与碘离子,选择AS19阴离子交换分离柱、KOH淋洗液自动发生器、抑制型电导检测.溴离子与碘离子分别在14.8μg/L ～ 100 mg/L与30.4 μg/L～ 100 mg/L范围内线性良好,检出限分别为3.7 μg/L与7.6μg/L,环境水样平行测定的RSD分别为0.2％～1.5％与0.3％ ～1.6％,两个质量浓度水平的加标回收率分别为91.8％ ～105％与89.5％～93.4％.%An ion chromatography method for determining Br~ and I" in water was studied. The separation of the anions was achieved on an IonPac AS19 Column with KOH as eluent,and the detection was performed by a conductivity detection mode. Good linearity were obtained within the concentration range of 14. 8 μg/L～ 100 mg/L for Br- and 30.4 μg/L～100 mg/L for I-. The method detection limits of Br- and I- were 3.7 μg/L and 7.6 μg/L, respectively. The RSD of the samples were 0.2%～1.5% (Br-) and 0. 3%～1.6% (I-).The recoveries of Br- in water samples were 91. 8%～105% ,and the recoveries of I- were 89.5%～93.4%.
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