Oxidation of Microcystin-LR by Ferrate(VI): Kinetics, Degradation Pathways, and Toxicity Assessments

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F14%3A33152049" target="_blank" >RIV/61989592:15310/14:33152049 - isvavai.cz</a>
Alternative codes found
RIV/67985939:_____/14:00437711
Result on the web
<a href="http://pubs.acs.org/doi/pdf/10.1021/es5030355" target="_blank" >http://pubs.acs.org/doi/pdf/10.1021/es5030355</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/es5030355" target="_blank" >10.1021/es5030355</a>

Result language
angličtina
Original language name
Oxidation of Microcystin-LR by Ferrate(VI): Kinetics, Degradation Pathways, and Toxicity Assessments
Original language description
The presence of the potent cyanotoxin, microcystin-LR (MC-LR), in drinking water sources poses a serious risk to public health. The kinetics of the reactivity of ferrate(VI) (FeVIO42?, Fe(VI)) with MC-LR and model compounds (sorbic acid, sorbic alcohol,and glycine anhydride) are reported over a range of solution pH. The degradation of MC-LR followed second-order kinetics with the bimolecular rate constant (kMCLR+Fe(VI)) decreasing from 1.3 +- 0.1 x 102 M?1 s?1 at pH 7.5 to 8.1 +- 0.08 M?1 s?1 at pH 10.0. The specific rate constants for the individual ferrate species were determined and compared with a number of common chemical oxidants employed for water treatment. Detailed product studies using liquid chromatography?mass spectrometry/mass spectrometry (LC?MS/MS) indicated the oxidized products (OPs) were primarily the result of hydroxylation of the aromatic ring, double bond of the methyldehydroalanine (Mdha) amino acid residue, and diene functionality. Products studies also indicate
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CC - Organic chemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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