碘氧化—分光光度法测水中溴酸根  

Iodiometry-Spectrophotometric Determination of Bromate in Water

作　　者：李秀萍[1] 赵荣祥[2] 沈春玉[1] 

机构地区：[1]辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001 [2]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2011年第1期9-12,共4页Journal of Liaoning Petrochemical University

摘　　要：采用紫外—可见分光光度法测定矿泉水和饮用水中的溴酸盐,研究了矿泉水和饮用水中溴酸根离子与碘离子的反应时间、盐酸体积、碘化钾质量、线性范围对溴酸盐质量浓度的影响。在避光的情况下测定矿泉水和饮用水中溴酸盐的平均质量浓度分别为10.33μg/L和9.33μg/L。矿泉水和饮用水的加标回收率分别在96.03%-105.59%和95.89%-96.12%之间,该方法的精密度为0.36,检出限为0.108。Ultraviolet-visible spectrophotometry was used to determinate the content of bromate in mineral water and drinking water.The effect of reaction time,dosage of hydrochloric acid,dosage of potassium iodide,working curve and recovery were studied,and the content of bromate in mineral water anddrinkingwater was testedinabsenceofthelightas 10.33 and 9.33 μg/L,respectively.The recovery of mineral water is 96.03%~105.59%,while the recovery of drinking water is 95.89%~96.12%.The precision and detection limit of this method are 0.36 and 0.108,respectively.

关 键 词：矿泉水 饮用水 分光光度法 溴酸根 

分 类 号：TQ041.7[化学工程]