自制银柱IC法测定饮用矿泉水中的溴酸盐

Determination of trace bromate in drinking natural mineral water by ion chromatography with Agcolumn pretreatment

采用自制的SPE-Ag柱去除样品中高浓度的氯离子,再用H柱去除可能带进系统的银离子,从而消除对溴酸盐测定的影响。基于此建立了测定饮用天然矿泉水中痕量溴酸盐的离子色谱方法。其最小检出浓度为0.005 mg/L,相对标准偏差为3.7%,回收率在100%～112%之间。

A method for the determination of trace level bromate in drinking natural mineral water by ion chromatography after pretreatment by self-made Ag-column and H-column.The results showed that the detection limit of bromate concentration was 0.005 mg /L,the relative standard deviation was 3.7% and the recoveries were 100% ～ 112%.