小麦面粉经过简单的超声提取,离心分离,上清液分别经过C18小柱和Ag柱过滤,用电导抑制型离子色谱法测定小麦面粉中的溴酸盐(BrO3-)的含量。得到小麦面粉中BrO3-方法检出限0.5mg/kg,加标回收率在91.5%～97.9%之间,精密度为1.08%,符合国家标准。本法操作简便、准确度高,重现性好。 Wheat flour was extracted by sonication and centrifuged. The supernatant was filtered through C18 column and Ag column, respectively. The content of bromate (BrO3-) in wheat flour was determined by conductivity-suppressed ion chromatography. The detection limit of BrO3- in wheat flour was 0.5mg / kg, the spiked recoveries ranged from 91.5% to 97.9%, and the precision was 1.08%, which accorded with the national standard. This method is simple, accurate and reproducible.