文献类型： 外文期刊

第一作者： Weng HuanXin

作者： Weng HuanXin;Hong ChunLai;Yan AiLan;Ji ZhongQiang

作者机构：

关键词： Iodine deficiency disorders (IDD);I-125;biogeochemical transport;quantitative model

期刊名称：SCIENCE CHINA-EARTH SCIENCES （ 影响因子：4.368； 五年影响因子：3.814 ）

ISSN： 1674-7313

年卷期： 2013 年 56 卷 9 期

页码：

收录情况： SCI

摘要： Iodine deficiency disorders (IDD) are among the world's most prevalent public health problems yet preventable by dietary iodine supplements. To better understand the biogeochemical behavior of iodine and to explore safer and more efficient ways of iodine supplementation as alternatives to iodized salt, we studied the behavior of iodine as it is absorbed, accumulated and released by plants. Using Chinese cabbage as a model system and the I-125 tracing technique, we established that plants uptake exogenous iodine from soil, most of which are transported to the stem and leaf tissue. The level of absorption of iodine by plants is dependent on the iodine concentration in soil, as well as the soil types that have different iodine-adsorption capacity. The leaching experiment showed that the remainder soil content of iodine after leaching is determined by the iodine-adsorption ability of the soil and the pH of the leaching solution, but not the volume of leaching solution. Iodine in soil and plants can also be released to the air via vaporization in a concentration-dependent manner. This study provides a scientific basis for developing new methods to prevent IDD through iodized vegetable production.

分类号：