Fractionation of arsenic from groundwater in paddy soils and Distribution of As in different parts of rice plants of southwestern Taiwan

in International Symposium (oral presentation paper), 國際研討會(全文口頭發表)
標題Fractionation of arsenic from groundwater in paddy soils and Distribution of As in different parts of rice plants of southwestern Taiwan
出版類型國際研討會(全文口頭發表)
出版年度2011
AuthorsW.M. Hsu, 許文明, H.C. Hsi 席行正, & Hseu 許正一
出版日期Oct 11 2011 12:0
會議地點Colombo
其他編號0000
中文摘要

This study indicates that As-containing groundwater contributed to a considerable increase of As not only in the paddy soil but also in the different parts of rice. The large F3 and F4 fractions shown from SEP indicated the high potential of As availability from amorphous and crystalline hydrous oxides in the soils. The total and F1-F4 concentrations of As significantly increased in the soil toward the inlet of irrigation groundwater. Although As concentration in the rice grain is less than 1.0 mg/kg, the estimated intake level of studied rice by humans approached to the maximum tolerable daily intake of As established by the WHO.

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