Dynamics of Iodine, Bromine, and Chlorine in Soil : II. Chemical Forms of Iodine in Soil Solutions
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Chemical forms of iodine in soil solutions under non-flooded oxidizing and flooded reducing soil conditions were quantitatively analyzed. The results showed that IO_3^- (oxidation number +5) was the dominant chemical form under non-flooded soil condition (85.8% of water soluble iodine), although most of the iodine was combined with the soil in an insoluble form. In contrast, under the flooded soil condition, a considerable portion of the insoluble iodine combined with the soils was transformed to water soluble iodine, where the concentration of soluble iodine became much higher than that under non-flooded soil condition, and I^- (oxidation number -1) was the dominant chemical form (86.8% of water soluble iodine), followed by IO_3^- (11.9%). It was assumed that the redox potential was an important factor affecting the concentration of soluble iodine or the ratio of I^- to IO_3^- in the soil solution.
- 一般社団法人日本土壌肥料学会の論文
- 1992-06-00
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関連論文
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- IODINE, BROMINE AND CHLORINE CONTENTS IN SOILS AND PLANTS OF JAPAN : III. Iodine, Bromine and Chlorine Contents in the Andosols and in Plants of Central Honshu
- Dynamics of Iodine, Bromine, and Chlorine in Soil : II. Chemical Forms of Iodine in Soil Solutions