Accumulation and biotransformation of arsenic by water bloom

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F08%3A00026409" target="_blank" >RIV/00216224:14310/08:00026409 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Accumulation and biotransformation of arsenic by water bloom
Original language description
Biomass of freshwater cyanobacteria (water bloom) is well known as an efficient biosorbent for heavy metal ions. In this work sorption and biotransformation of arsenate by water bloom (predominantly Microcystis sp.) has been studied. Biomass was cultivated in natural water enriched by arsenate for 138 hours. Up to 35% of arsenic has been found associated with biomass. Arsenic species in water and biomass were determined. Quantitative reduction of arsenate to arsenite followed by biomethylation and releasing mainly dimethylarsinate (DMA) into water were observed. Monomethylarsonate (MMA), DMA and both inorganic species were determined in biomass extract. Besides these species, several unknown As species were found in biomass and identified by further techniques as MMA(III) and arsenoribosides. Natural biomass contains 40% As in form of arsenoriboside. Up to 56% of arsenate content in water has been methylated by cyanobacterial biomass.
Czech name
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Czech description
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Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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