Selenium is an essential component of glutathione peroxidase and other enzyme systems and is therefore essential for animal metabolism. It is, however, toxic at concentrations little above those required for health. Some plants accumulate selenium from seleniferous soils and constitute a toxic hazar
β¦ LIBER β¦
Determination of Selenium Species in Environmental Samples
β Scribed by Pyrzy?ska, Krystyna
- Publisher
- Springer-Verlag
- Year
- 2002
- Weight
- 104 KB
- Volume
- 140
- Category
- Article
- ISSN
- 0344-838X
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Two rapid, highly sensitive, and selective spectrophotometric methods for the determination of traces of selenium(IV) were studied. The methods are based on either the oxidation of 4-aminoantipyrine ( 4-amino-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one; 4-AAP; 1) by selenium in basic medium a