建立了一种简便的用于浓缩水中痕量BrO3-和ClO4-的样品前处理方法.水样经OnGuard Ag柱过滤,用微波炉在15 min内可浓缩20倍,所测离子的回收率均高于90%.又采用IonPac AS16型亲水性色谱柱,用150 μL定量环,以NaOH为流动相、梯度淋洗方式,在35 min内测定了包括BrO3-和ClO4-在内的8种离子.BrO3-和ClO4-的检测限分别为0.10 μg/L和0.20 μg/L.该方法在实际应用中有较大的参考价值.
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