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Statements

Subject Item
n2:RIV%2F00027162%3A_____%2F11%3A%230000806%21RIV12-MZE-00027162
rdf:type
skos:Concept n11:Vysledek
dcterms:description
Background and scope Effect-directed analysis is increasingly used for the identification of key toxicants in environmental samples and there is a growing need for in vivo biotests as diagnostic tools. Within this study, we performed an in vivo sediment contact test, applicable on both native field samples and their extracts or fractions, in order to be able to compare the results from both field and laboratory studies. Material and methods A sediment contact test with the prosobranch snail, Potamopyrgus antipodarum, was carried out on extracts and fractions of field sediments from three European river basins. The results were compared with previous results of the native field samples. Results In contrast to the native sediments, the extracts of the samples led to an overall decrease in reproduction. Even the chosen reference sites had an adverse effect on the snails' reproduction. It appeared that a higher bioavailability in the organic extracts, together with a changing composition of compounds could have lead to this change in effects. The fractionation of the extracts partly led to a more differentiated picture, but the resolution was not high enough to see any distinct effects on the snails' reproduction. Discussion and conclusion Our results highlight the importance of the use of in vivo biotests and point out the relevance of bioavailability in native sediments. For further fractionation studies, a more realistic extraction procedure, together with a higher resolution fractionation, would be appropriate in order to separate individual bioavailable compounds more efficient. Background and scope Effect-directed analysis is increasingly used for the identification of key toxicants in environmental samples and there is a growing need for in vivo biotests as diagnostic tools. Within this study, we performed an in vivo sediment contact test, applicable on both native field samples and their extracts or fractions, in order to be able to compare the results from both field and laboratory studies. Material and methods A sediment contact test with the prosobranch snail, Potamopyrgus antipodarum, was carried out on extracts and fractions of field sediments from three European river basins. The results were compared with previous results of the native field samples. Results In contrast to the native sediments, the extracts of the samples led to an overall decrease in reproduction. Even the chosen reference sites had an adverse effect on the snails' reproduction. It appeared that a higher bioavailability in the organic extracts, together with a changing composition of compounds could have lead to this change in effects. The fractionation of the extracts partly led to a more differentiated picture, but the resolution was not high enough to see any distinct effects on the snails' reproduction. Discussion and conclusion Our results highlight the importance of the use of in vivo biotests and point out the relevance of bioavailability in native sediments. For further fractionation studies, a more realistic extraction procedure, together with a higher resolution fractionation, would be appropriate in order to separate individual bioavailable compounds more efficient.
dcterms:title
Sediment contact test with Potamopyrgus antipodarum in effect-directed analyses-challenges and opportunities Sediment contact test with Potamopyrgus antipodarum in effect-directed analyses-challenges and opportunities
skos:prefLabel
Sediment contact test with Potamopyrgus antipodarum in effect-directed analyses-challenges and opportunities Sediment contact test with Potamopyrgus antipodarum in effect-directed analyses-challenges and opportunities
skos:notation
RIV/00027162:_____/11:#0000806!RIV12-MZE-00027162
n11:predkladatel
n14:ico%3A00027162
n5:aktivita
n13:R
n5:aktivity
R
n5:cisloPeriodika
8
n5:dodaniDat
n6:2012
n5:domaciTvurceVysledku
n9:5686350
n5:druhVysledku
n16:J
n5:duvernostUdaju
n17:S
n5:entitaPredkladatele
n15:predkladatel
n5:idSjednocenehoVysledku
228561
n5:idVysledku
RIV/00027162:_____/11:#0000806
n5:jazykVysledku
n8:eng
n5:klicovaSlova
Sediments; Field; Extraction; Fractionation; Biotests; Reprotoxicity; FRESH-WATER; ESTROGENIC EXPOSURE; ORGANIC TOXICANTS; RIVER-BASINS; FRACTIONATION; IDENTIFICATION; TOOL
n5:klicoveSlovo
n10:Field n10:RIVER-BASINS n10:Extraction n10:ORGANIC%20TOXICANTS n10:IDENTIFICATION n10:ESTROGENIC%20EXPOSURE n10:FRESH-WATER n10:Reprotoxicity n10:FRACTIONATION n10:Fractionation n10:TOOL n10:Biotests n10:Sediments
n5:kodStatuVydavatele
GE - Gruzie
n5:kontrolniKodProRIV
[EB57B0375FC9]
n5:nazevZdroje
Environmental Science and Pollution Research
n5:obor
n12:DN
n5:pocetDomacichTvurcuVysledku
1
n5:pocetTvurcuVysledku
4
n5:rokUplatneniVysledku
n6:2011
n5:svazekPeriodika
18
n5:tvurceVysledku
Schmitt, C. de Deckere, E. Machala, Miroslav Vogt, Ch.
n5:wos
000293899700017
s:issn
0944-1344
s:numberOfPages
7