催化分光光度法测定高碘蛋中的碘含量  

KINETIC COLORIMETRIC DETERMINATION OF IODINE IN HIGH IODINE EGG

作　　者：王磊[1] 马广存[1] 张荣新[2] 李泽国[2] 

机构地区：[1]山东省分析测试中心,济南250001 [2]山东省卫生防疫站,济南250001

出　　处：《营养学报》1990年第1期69-72,共4页Acta Nutrimenta Sinica

摘　　要：本文采用Ⅰ^-催化亚砷酸与硫酸鈰的氧化还原反应分光光度法测定高碘蛋中碘的含量。鸡蛋样品中的碘量在0.161～0.141μg范围内时,测出结果的变异系数为4.3～7.9％,回收率为90.6～95.9％。在测定过程中,由于碘的催化作用而加快反应速度。因此,在操作时应严格控制反应时间。A modified method of Watkinson's was used for the kinetic colorimetr-ic determination of iodine in high iodized egg with I~ catalytic arsenous acid and cerous sulfate. The lowest limit determination for iodine was 0.01ug.Coefficient of variation was 4.3-7.9% and recovery rate was 90.6-95.9%. As the I- catalytic action was so fast, that the operation time must be restricted to optimize the better determination.

关 键 词：高碘蛋 碘 Ⅰ-催化分光光度法 

分 类 号：R151.3[医药卫生—营养与食品卫生学]