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Adsorption and desorption of iodine by various Chinese soils
I. Iodate
AbstractIn order to assess the adsorption of iodate by different soils from China, a series of batch experiments were conducted. It was found that soils rich in iron oxide had high affinity for iodate. Iodate adsorption isotherms could be well fitted with both Langmuir and Freundlich equations. Iodate adsorption by 20 different soils from China revealed that iodate adsorption was significantly correlated with soil organic matter negatively and positively with free iron oxide contents. At initial concentration of 4 mg I L−1, iodate adsorption ranged between 9 and 34 mg kg−1 soil. No correlation between iodate adsorption and cation exchange capacity and soil pH was found. For a single soil, there was a significant linear relationship between the amounts of iodate adsorbed and desorbed, but for a group of different soils, the relationship between the amounts of iodate adsorption and desorption followed a nonlinear relationship, the deviation mainly occurred at high adsorption side. The relationship between Kd and free aluminum oxide and free iron oxide contents showed an exponential relationship for various soils with exception of the soil from Hetian in Xinjiang.
Adsorption and desorption of iodine by various Chinese soils
I. Iodate
AbstractIn order to assess the adsorption of iodate by different soils from China, a series of batch experiments were conducted. It was found that soils rich in iron oxide had high affinity for iodate. Iodate adsorption isotherms could be well fitted with both Langmuir and Freundlich equations. Iodate adsorption by 20 different soils from China revealed that iodate adsorption was significantly correlated with soil organic matter negatively and positively with free iron oxide contents. At initial concentration of 4 mg I L−1, iodate adsorption ranged between 9 and 34 mg kg−1 soil. No correlation between iodate adsorption and cation exchange capacity and soil pH was found. For a single soil, there was a significant linear relationship between the amounts of iodate adsorbed and desorbed, but for a group of different soils, the relationship between the amounts of iodate adsorption and desorption followed a nonlinear relationship, the deviation mainly occurred at high adsorption side. The relationship between Kd and free aluminum oxide and free iron oxide contents showed an exponential relationship for various soils with exception of the soil from Hetian in Xinjiang.
Adsorption and desorption of iodine by various Chinese soils
I. Iodate
Dai, Jiu-Lan (author) / Zhang, Min (author) / Zhu, Yong-Guan (author)
Environmental International ; 30 ; 525-530
2003-08-19
6 pages
Article (Journal)
Electronic Resource
English
Adsorption , Desorption , Iodine , Iodate , Soil , China
Adsorption and desorption of iodine by various Chinese soils - I. Iodate
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