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Statements

Subject Item
n2:RIV%2F00216305%3A26310%2F11%3APU91557%21RIV12-MSM-26310___
rdf:type
skos:Concept n12:Vysledek
dcterms:description
Time series laboratory experiments were performed to follow the degradation of arsenic compounds naturally present in marine algae.Samples of the brown alga Ecklonia radiata, which contains three major arsenosugars, were packed into 12 tubes open to air at one end only, and allowed to naturally decompose under moist conditions. During the subsequent 25 days, single tubes were removed at intervals of 1-4 days; their contents were cut into four sections (from open to closed end) and analysed for arsenic species by HPLC/ICPMS following an aqueous methanol extraction. In the sections without direct contact with air, the original arsenosugars were degraded primarily to arsenate via two major intermediates, dimethylarsinoylethanol (DMAE) and dimethylarsinate (DMA). The section with direct contact with air degraded more slowly and significant amounts of arsenosugars remained after 25 days. We also report preliminary data suggesting that the amount of non-extractable or recalcitrant arsenic (i.e. insoluble af Time series laboratory experiments were performed to follow the degradation of arsenic compounds naturally present in marine algae.Samples of the brown alga Ecklonia radiata, which contains three major arsenosugars, were packed into 12 tubes open to air at one end only, and allowed to naturally decompose under moist conditions. During the subsequent 25 days, single tubes were removed at intervals of 1-4 days; their contents were cut into four sections (from open to closed end) and analysed for arsenic species by HPLC/ICPMS following an aqueous methanol extraction. In the sections without direct contact with air, the original arsenosugars were degraded primarily to arsenate via two major intermediates, dimethylarsinoylethanol (DMAE) and dimethylarsinate (DMA). The section with direct contact with air degraded more slowly and significant amounts of arsenosugars remained after 25 days. We also report preliminary data suggesting that the amount of non-extractable or recalcitrant arsenic (i.e. insoluble af
dcterms:title
Arsenic cycling in marine systems: degradation of arsenosugars to arsenate in decomposing algae, and preliminary evidence for the formation of recalcitrant arsenic Arsenic cycling in marine systems: degradation of arsenosugars to arsenate in decomposing algae, and preliminary evidence for the formation of recalcitrant arsenic
skos:prefLabel
Arsenic cycling in marine systems: degradation of arsenosugars to arsenate in decomposing algae, and preliminary evidence for the formation of recalcitrant arsenic Arsenic cycling in marine systems: degradation of arsenosugars to arsenate in decomposing algae, and preliminary evidence for the formation of recalcitrant arsenic
skos:notation
RIV/00216305:26310/11:PU91557!RIV12-MSM-26310___
n12:predkladatel
n14:orjk%3A26310
n3:aktivita
n13:S
n3:aktivity
S
n3:cisloPeriodika
1
n3:dodaniDat
n4:2012
n3:domaciTvurceVysledku
n9:1720120
n3:druhVysledku
n10:J
n3:duvernostUdaju
n8:S
n3:entitaPredkladatele
n5:predkladatel
n3:idSjednocenehoVysledku
187108
n3:idVysledku
RIV/00216305:26310/11:PU91557
n3:jazykVysledku
n18:eng
n3:klicovaSlova
arsenosugar, degradation, HPLC-ICPMS
n3:klicoveSlovo
n11:degradation n11:HPLC-ICPMS n11:arsenosugar
n3:kodStatuVydavatele
AU - Australské společenství
n3:kontrolniKodProRIV
[C9F7603511A2]
n3:nazevZdroje
Environmental Chemistry
n3:obor
n17:CB
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n4:2011
n3:svazekPeriodika
8
n3:tvurceVysledku
Navrátilová, Jana
n3:wos
000287764800006
s:issn
1448-2517
s:numberOfPages
7
n15:organizacniJednotka
26310