改进电化学还原装置检测小麦粉溴酸盐  

Improvement of electrochemical reduction device for detection of bromate in wheat flour

作　　者：董瑞[1,2] 胡荣宗 黄维雄 周莉莉 

机构地区：[1]山东省食品药品检验研究院食品中心,山东济南250101 [2]厦门大学化学化工学院,福建厦门361005 [3]山东省产品质量检验研究院食品化工检测中心,山东济南250101

出　　处：《济南大学学报（自然科学版）》2015年第1期30-33,共4页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金(20527005);公益性行业科研专项(2012104012-3)

摘　　要：依据电解、电渗析和电迁移原理改进电化学还原装置,在不使用化学试剂的条件下,将待测样品组分中的Br O-3还原为Br-后进行检测,可避免高浓度Cl-的干扰。溴酸盐实样的检测表明,溴酸盐检出限为0.32 mg/kg,日内精密度为2.73%,日间精密度为3.81%,回收率可达92%~96%。An electrochemical reduction device developed according to electrolysis,electrodialysis and electromigration theories can reduce bromate to bromide without any use of reagent. The high concentration chloride in samples would interfered the detection of bromate by Ion Chromatography,but this defect could be overcome if bromate is reduced to bromide before detection. When useing the electrochemical reduction device to detect bromate in real samples,the detection limit of bromate was 0. 32 mg / kg,the within day precision was 2. 73%,the between days precision was 3. 81%,and percent recovery was 92% ~ 96%.

关 键 词：电解 电渗析 电迁移 电化学还原 离子色谱 溴酸根 溴离子 

分 类 号：O65[理学—分析化学]