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2020 | OriginalPaper | Buchkapitel

12. Occurrence, Contamination, Speciation and Analysis of Selenium in the Environment

verfasst von : M. S. V. Naga Jyothi, B. J. Ramaiah, Shihabudheen M. Maliyekkal

Erschienen in: Measurement, Analysis and Remediation of Environmental Pollutants

Verlag: Springer Singapore

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Abstract

Selenium (Se) is an essential micronutrient for animals and human. It serves as an antioxidant and anti-carcinogenic agent in humans. However, there is only a minuscule gap in intake concentration between deficiency and toxicity limits. Natural source of Se in the environment is due to weathering of selenium-containing parent bedrocks and atmospheric deposition. However, the magnitude of the release of Se into the environment has intensified by anthropogenic activities. The bioavailability and toxicity of Se depend on its chemical forms, exposure time, and concentration. Several studies have documented both the beneficial and adverse effects of Se on human and other biotic forms. In this context, understanding the fundamentals of selenium chemistry, occurrence, sources, toxicity, and exposure mechanism are important to control its intake and threshold uptake limit. The chapter reviews the literature relevant to the release of Se into the natural habitat, speciation, and its effects on humans and animals. The manuscript also renders outline on analytical techniques based on speciation and detection of selenium compounds.

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Metadaten
Titel
Occurrence, Contamination, Speciation and Analysis of Selenium in the Environment
verfasst von
M. S. V. Naga Jyothi
B. J. Ramaiah
Shihabudheen M. Maliyekkal
Copyright-Jahr
2020
Verlag
Springer Singapore
DOI
https://doi.org/10.1007/978-981-15-0540-9_12