离子色谱法测定饮用水中痕量溴酸盐

建立一种检测饮用水中痕量溴酸盐的离子色谱方法。利用On GuardⅡAg柱过滤去除水中氯离子,直接进样,电导检测器检测。该方法避免了氯离子对溴酸盐的干扰,测定水质溴酸盐的灵敏度和准确度均有很大提高。溴酸盐的检出限为0.005 mg/L,测定结果的相对标准偏差为7.56%(n=7),加标回收率为92.0%~110.0%。该方法操作简便快速、准确度高,适合于饮用水中痕量溴酸盐的测定。

Determination of Bromate in Drinking Water by Ion Chromatography

An ion chromatography method was established to determine trace bromated in drinking water. OnGuard II silver filtration column was used to remove chloride ion, trace bromate in drinking water was determined by conductance deterctor after direct injection. The method might avoid the interference of bromate chlorine ion and improve the sensitivity and accuracy of the determination of bromate in water. The detection limit was 0.005 mg/L, the relative standard deviation was 7.56%(n=7), and the recovery rate was 92.0%–110.0%. This method is simple and accurate, which is suitable for the determination of trace bromate in drinking water.