کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1739644 | 1016873 | 2006 | 15 صفحه PDF | دانلود رایگان |
In order to elucidate the cause for the leaching of iodine in a flooded paddy field, we investigated the transformation of an iodine species affected by the water management of the paddy field. The increased concentration of iodide (I−) in soil solution of a flooded paddy field suggested that I− was leached from the soil under anaerobic conditions. The post-edge feature of X-ray absorption near-edge structure (XANES) for iodate (IO3−) spiked to soil totally disappeared after anaerobic incubation of the soils, and I− was dissolved in the solution. On the other hand, I− in contact with the soil was not likely to be oxidized to IO3− under aerobic incubation. Iodine was leached out in soil solution as I− under anaerobic conditions, whereas part of the iodine species was retained by soil as I2 or organoiodine both under anaerobic and aerobic conditions.
Journal: Journal of Environmental Radioactivity - Volume 86, Issue 2, 2006, Pages 212–226