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催化褪色光度法测定食盐中微量碘
Catalytic decolorization spectrop hotometric determination of micro -iodine
【摘要】 在NaH2PO4～Na2HPO4介质中,微量碘对高碘酸钾氧化孔雀绿褪色有显著的催化作用,因此可用动力学分析法测定微量碘,该方法检出限为6.1×10-8g/mL,线性范围为0.21～1.50μg/mL.用于食盐中微量碘的测定结果令人满意.
【Abstract】 Based on the catalytic effect of micro -iodine on oxidizing decolorizati on of mocachite green by KIO4in NaH2PO4～Na 2HPO4solution,a method has been developed for the determination of micro -iodine by catalytic spectr ophometry.The maximum absorptitio n is at 610nm,the linear rang of determination is 0.21～1.50μg /mL.The detection limit is 6.1×10-8g /mL.The method has proved to be very satisfactory.
- 【文献出处】 安徽机电学院学报 ,Journal of Anhui Institute of Mechanical and Electrical Engineering , 编辑部邮箱 ,2001年04期
- 【分类号】O657.32
- 【被引频次】6
- 【下载频次】90