本文介绍了一种用离子色谱法测定饮用水和地下水中低浓度高氯酸盐的方法。该方法使用Dionex IonPac作为11柱的大回路进样、氢氧化物洗脱液和抑制电导检测，以定量饮用水样本中低至2.5 ug/L的高氯酸盐。该方法在2.5-100 ug/L范围内呈线性，并获得了加标自来水样品中高氯酸盐的定量回收率。此外，还介绍了一种新的极化阴离子分析柱IonPac AS 16用于测定低浓度高氯酸盐的适用性。

This paper describes a method developed specifically for the determination of low level perchlorate in drinking water and ground waters using ion chromatography. This method uses a large loop injection with a Dionex IonPac AS 11 column, hydroxide eluent and suppressed conductivity detection to quantify perchlorate at levels as low as 2.5 ug/L in drinking water samples. The method is linear over the range of 2.5- 100 ug/L and quantitative recoveries were obtained for perchlorate in spiked tap water samples. Also, the applicability of a new polarizable anion analysis column, the IonPac AS 16, for the determination of low level perchlorate is presented.