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Position: Home > Articles > Determination of Iodine from the Kelp with Water-soluble Polymer Extraction by Spectrophotometry FOOD SCIENCE 2007,28 (2) 281-283

高聚物萃取光度法测定海带中碘含量的研究

作  者:
杜建中;李倩;罗牡燕;胡元结
单  位:
湛江师范学院生命科学与化学学院
关键词:
高聚物;分光光度法;碘
摘  要:
碱熔法使海带中的碘以I-形式存在于溶液中,酸性条件下用NaNO2氧化为I2,在无机盐存在下,用聚乙二醇4000水溶液将碘萃取至有机相,以孔雀石绿作显色剂,在波长为470nm时,利用分光光度法测定碘的含量。碘含量在8.0~65mg/L范围内符合朗伯比尔定律,方法的回收率为86.6%~112%。
译  名:
Determination of Iodine from the Kelp with Water-soluble Polymer Extraction by Spectrophotometry
作  者:
DU Jian-zhong,LI Qian,LUO Mu-yan,HU Yuan-jie (Department of Chemistry, Zhanjiang Normal College, Zhanjiang 524048, China)
关键词:
Iodine;polymer;spectrophotometry
摘  要:
I- was obtained from the kelp by alkali fusiou and then oxidized by NaNO2 in acidic solution. I2 could be extracted by polyethylene glycol -4000 in inorganic salts water solution. Iodine was coupled with malachite green and produced a blue complex. The Iodine was determined by spectrophotometry. The linear range for determination of Iodine is 8.0~65μg/ml. The recovery was 87% ~112%.

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