食品科学 ›› 2002, Vol. 23 ›› Issue (8): 214-217.
• 分析检测 • 上一篇 下一篇
李世敏, 刘冬
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LI Shi-Min, LIU Dong
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摘要: 放大反应比色法测定食品中的含碘量,检出限为3.4μg/g,测定的线性范围为0.2~0.9mg/L;回收率达到96%~104%,具有灵敏度较高、仪器要求不高等优点。对30多种常见食品和4种食盐样品进行检测,结果表明海产品、鸡肉和鸡蛋等食品含碘较高。
关键词: 碘, 比色法, 食品
Abstract: A spectrophotometric method for determining trace iodine in food has been developed. The method showed thelimit as 3.4μg/g and a linear relationship between the absorbencies of solutions containing iodine and their relative concen-trations ranging from 0.2~0.9mg/L. It was accurate,yet not sophisticated. The recovery is 96%~104% and the coefficient ofdeviation is less than 3%. The samples of 30 varities of foods and 4 types of salts have been assayed. The results showedthat seafoods and chicken meat contained higher iodine.
Key words: Iodine , Spectrophotometer , Food
李世敏, 刘冬. 放大反应比色法测定食品中碘的研究[J]. 食品科学, 2002, 23(8): 214-217.
LI Shi-Min, LIU Dong. [J]. FOOD SCIENCE, 2002, 23(8): 214-217.
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