Influence of physicochemical properties of various soil types on iodide and iodate sorption
| Autor: | Eva Duborská, Martin Urík, Marek Bujdoš, Michaela Matulová |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis 0208 environmental biotechnology Iodide Iodates chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Iodine complex mixtures 01 natural sciences Soil chemistry.chemical_compound Environmental Chemistry Freundlich equation Iodate 0105 earth and related environmental sciences chemistry.chemical_classification Minerals Public Health Environmental and Occupational Health Soil classification Sorption General Medicine General Chemistry Iodides Pollution Carbon 020801 environmental engineering Kinetics chemistry Environmental chemistry Soil water Adsorption |
| Zdroj: | Chemosphere. 214:168-175 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2018.09.041 |
| Popis: | Studies that deal with iodine mobility in uncontaminated agricultural soils are scarce and unique. Therefore, in this article, we have evaluated the sorption behavior of two most abundant naturally occurring inorganic iodine species - iodide and iodate - in several soil types. Our results showed that the sorption process is extremely slow with equilibrium achieved after ten days. The sorption of both iodine species is well described by Freundlich isotherm. The affinity of iodine for all investigated soils in the observed concentration range is relatively low. Our results showed that besides iodine speciation, sorption efficiency is highly dependent on soil types and their characteristics. While in mineral soils with low organic carbon content iodide sorption is dominant, organic rich soils are more favorable for iodate sorption. Organic carbon, clay content, pH and the abundance of iron, aluminum and manganese oxides and hydroxides showed to be the most important soil properties controlling iodine sorption. Our results provide new insight into the complex iodine behavior and retention in soils. This is crucial for better understanding of iodine mobility and the ability to enter the food chain. |
| Databáze: | OpenAIRE |
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