Capacity and degree of iodine absorbed and enriched by vegetable from soil

Article type: Research Article

Authors: Weng, Huan-xin | Weng, Jing-ke | Yong, Wen-bin | Sun, Xiang-wu | Zhong, Hang

Affiliations: Institute of Environment & Biogeochemistry, Zhejiang University, Hangzhou 310027, China | Department of Biology, Zhejiang University, Hangzhou 310027, China | Soil & Fertilizer Station of Zhejiang Province,Hangzhou 310004,China

Abstract: To understand the biogeochemical transfer of iodine, the absorbability and bioaccumulation of iodine in tested vegetables (radish, spinach and Chinese cabbage) are examined by applying iodic fertilizer composed of kelp and diatomaceous earth. The experimental results show that when iodine in soil is not excessive, the concentrations of iodine in tested vegetables increase as the content of iodine in soil increases. The absorbability and enrichment degree of iodine in various vegetable and in various parts of the same vegetable are different, which explains that the concentration of iodine in plant is determined by the plant type and by the physiological action of plant. The patience order of tested vegetables to excessive iodine is Chinese cabbage > spinach > radish. These results have theoretical and practical significance in opening up a new way for ameliorating poor iodine environment with artificial means.

Keywords: iodine, biogeochemical transfer, absorbability, vegetable, IDD

Journal: Journal of Environmental Sciences, vol. 15, no. 1, pp. 107-111, 2003