Thompson D, Lee S, Allen R
J Assoc Off Anal Chem. 1983 Nov;66(6):1380-4.
A differential pulse polarographic procedure is described for the analysis of iodine in foods and nutritional products. Samples with iodine concentrations ranging from 5000 to 0.2 ppm have been successfully analyzed using this procedure. Precision averaged between 2 and 10% relative to the iodine level measured. Recoveries of added iodine ranged from 89 to 108% with external standards, and 97-100% by an analyte additions technique. Samples analyzed include dried almonds, whey protein concentrate, nonfat dried milk, sea kelp, vitamin-mineral nutritional supplements, diet meal replacement products, dried green beans, dried mushrooms, and wheat germ.
描述了一种用于分析食品和营养产品中碘的微分脉冲极谱法。使用该方法已成功分析了碘浓度范围为5000至0.2 ppm的样品。相对于所测碘水平，精密度平均在2%至10%之间。使用外标法时，添加碘的回收率在89%至108%之间，采用分析物添加技术时回收率为97%至100%。分析的样品包括干杏仁、乳清蛋白浓缩物、脱脂奶粉、海带、维生素-矿物质营养补充剂、代餐产品、干绿豆、干蘑菇和小麦胚芽。
