顺序注射停流分光光度法测定痕量碘  

Sequential injection spectrophotometry for determination of trace iodide using stopped-flow technique

作　　者：梁艳[1] 李立华[1] 钱建瑞[1] 赵艳伟[1] 王术皓[1] 

机构地区：[1]聊城大学化学化工学院,山东聊城252059

出　　处：《化学研究与应用》2009年第5期718-720,共3页Chemical Research and Application

基　　金：山东省自然科学基金资助项目(2005ZX12)

摘　　要：A rapid and sensitive spectrophotometric method was proposed for the detemination of I-with sequential injection stopped-flow technique,based on the effect of I-on the reaction between iron thiocyanate and NO2-.The experimental parameters were optimized by single factor method.The linear range for determination of I-was 0.4 mg·dm-3～4.0 mg·dm-3,and the detection limit was 0.3776 mg·dm-3.The relative standard deviation was 1.2% via nine repeated determination of 2 mg·dm-3 I-.The method was applied to determine the quality of I-in food water samples with satisfactory results.A rapid and sensitive spectrophotometric method was proposed for the detemination of I with sequential injection stoppedflow technique,based on the effect of I on the reaction between iron thiocyanate and NO2. The experimental parameters were optimized by single factor method. The linear range for determination of I was 0.4 mg· dm-3～4.0 mg·dm-3, and the detection limit was 0.3776 mg ·dm-3. The relative standard deviation was 1.2% via nine repeated determination of 2 mg·dm3 I-. The method was applied to determine the quality of I in food water samples with satisfactory results.

关 键 词：顺序注射 停流分光光度法 碘 

分 类 号：O657.3[理学—分析化学]