单扫描极谱法测定痕量碘酸根  

SINGLE-SCANNING-POLAROGRAPHIC DETERMINATION OF TRACE AMOUNTS OF IODATE

作　　者：高甲友[1] 

机构地区：[1]安徽工业大学化工与环境学院,马鞍山243002

出　　处：《理化检验（化学分册）》2004年第6期349-350,共2页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：在稀盐酸介质中,碘酸根与碘化钾反应生成碘分子,碘分子与罗丹明6G进行反应,使其还原波高降低,波高降低值在一定范围内与碘酸根浓度呈线性关系,据此建立了测定痕量碘酸根的单扫描极谱分析方法。方法用于食盐中痕量碘酸根的测定。In a dil. HCl solution of 0.12mol·L^(-1), iodate ion reacts with iodide to form iodine which decrease the peak height of the reductive wave of rhodamine 6G by their interaction. The values of the decrease of peak height keep linear relationship with the concentrations of iodate in the range of 0.01 to 0.20μg·ml^(-1). Based on these facts, a sensitive polarographic method for the determination of trace amounts of iodate is established and it has been satisfactorily applied to the analysis of table salt.

关 键 词：单扫描极谱法 碘酸根 罗丹明6G 食盐 

分 类 号：O657.32[理学—分析化学]