目的：建立淋洗液发生器电导抑制离子色谱测定饮用水中溴酸盐的方法。方法应用美国 Dionex ICS-2100型离子色谱仪、EGC-III 淋洗液自动发生器行离子色谱梯度淋洗法测定饮用水中溴酸盐，IonPac AS19（4×250 mm），淋洗液发生器在线产生 KOH，梯度淋洗，流速：1.0 ml／min。结果该法线性范围Y ＝－0.0006097＋0.0008731X ，r＝0.9999，精密度高（CV％＜1.5），样品加标平均回收率为99.5％～100.8％，最低检出限0.50μg／L。结论离子色谱梯度淋洗法测定饮用水中溴酸盐操作简单、快速、灵敏，可适用饮用水中溴酸盐的测定。%Objective To establish the method for determination of bromate in drinking water by eluent generator suppressed conductivity ion chromatography.Methods Used application of American Dionex ICS-2100 ion chromatograph and EGC-III eluent automatic generator for ion chromatography gradient elution method to do determination of bromate in drinking water [IonPac AS19 (4×250 mm)].Eluent generator produced KOH online,gradient elution,Flow rate:1.0 ml/min.Results The method was linear in the range of Y =-0.000 609 7+0.000 873 1X,r =0.999 9,high precision (CV% < 1.5).The samples average of recovery was 99.5%~100.8%.The lowest detection limit was 0.50 μg/L.Conclusion Ion chromatog-raphy gradient elution method for the determination of bromate in drinking water was simple,rapid,and sensitive.It can be suitable for determination of bromate in drinking water.
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