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Release of bioactive active iodine in kelp
Xiang-wu Sun1, Huan-xin Weng, Ya-chao Qin
1Institute of Environment and Biogeochemistry, Zhejiang University, Hangzhou 310027, China.
Journal of Environmental Sciences (China)
|November 22, 2005
Summary
Kelp rapidly releases bioactive iodine, primarily as iodide (I-). Factors like leaching water volume influence release, with dynamic iodine transformations occurring in the solution.
Area of Science:
- Marine Botany
- Analytical Chemistry
- Biogeochemistry
Background:
- Kelp is a significant source of bioactive iodine.
- Understanding iodine release from kelp is crucial for nutritional and environmental studies.
- The speciation and dynamics of released iodine require detailed investigation.
Purpose of the Study:
- To systematically study the release process of bioactive iodine from kelp.
- To identify key factors influencing iodine release.
- To characterize the chemical forms and transformations of iodine in the lixivium.
Main Methods:
- Leaching experiments were conducted to simulate iodine release.
- Analysis of the lixivium was performed to determine iodine speciation.
- The effect of leaching water volume on iodine release was quantified.
Main Results:
- Bioactive iodine is rapidly released from kelp.
- Iodide (I-) is the predominant form of iodine in the lixivium.
- Increased leaching water volume leads to higher total iodine release.
- Dynamic transformations occur among iodide (I-), iodate (IO3-), and organic iodine in the lixivium.
Conclusions:
- Kelp readily releases bioactive iodine, mainly as iodide.
- Iodine release is influenced by water volume and involves complex speciation changes.
- The findings provide insights into the bioavailability and environmental fate of kelp-derived iodine.
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