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Statements

Subject Item
n2:RIV%2F62157124%3A16270%2F12%3A43871415%21RIV13-MSM-16270___
rdf:type
skos:Concept n12:Vysledek
dcterms:description
An enhanced worldwide application of platinum group elements (PGE), in particular platinum, has been observed during recent decades. An increased concentration of PGE was determined in collected samples of great amount of aqueous ecosystems.The aim was to compare phytotoxic effect of platinum (PtCl4) by performing two different bioassays on green algae Pseudokirchneriella subcapitata and macrophyte duckweed, Lemna minor. The algal experiment (Pseudokichneriella subcapitata) followed OECD 201, the concentration row for PtCl4 was: 0.05; 0.01; 0.25; 0.5; 1 ?M. The duckweed (Lemna minor) experiment was conducted according to OECD 221, employed PtCl4 concentrations were: 5; 10; 25; 50; 100 ?M. Plants were cultivated as a microbiotest, using micro-volumes. The results of the algal test showed significant growth inhibition of the final biomass. The values of 72hEC5(?), 72hEC10(?), 72hEC20(?) counted on a basis of average specific growth rate (?) were 0.31 ?M, 0.58 ?M and 1.12 ?M of PtCl4, respectively. The values, obtained on a basis of the area under the growth curves (A), were 0.04 ?M (72hEC5(A)), 0.24 ?M (72hEC10(A)) and 0.64 ?M (72hEC20(A)). The experiment with duckweed showed 50% of growth inhibition and the values of 168hEC50(?) were 19.55 ?M and 168hEC50(A) 13.63 ?M of PtCl4. The fronds of duckweed showed strong adverse effect of platinum influence (chlorosis, necrosis). The algal test and the estimation of 72hEC5(A) appears to be the most sensitive. An enhanced worldwide application of platinum group elements (PGE), in particular platinum, has been observed during recent decades. An increased concentration of PGE was determined in collected samples of great amount of aqueous ecosystems.The aim was to compare phytotoxic effect of platinum (PtCl4) by performing two different bioassays on green algae Pseudokirchneriella subcapitata and macrophyte duckweed, Lemna minor. The algal experiment (Pseudokichneriella subcapitata) followed OECD 201, the concentration row for PtCl4 was: 0.05; 0.01; 0.25; 0.5; 1 ?M. The duckweed (Lemna minor) experiment was conducted according to OECD 221, employed PtCl4 concentrations were: 5; 10; 25; 50; 100 ?M. Plants were cultivated as a microbiotest, using micro-volumes. The results of the algal test showed significant growth inhibition of the final biomass. The values of 72hEC5(?), 72hEC10(?), 72hEC20(?) counted on a basis of average specific growth rate (?) were 0.31 ?M, 0.58 ?M and 1.12 ?M of PtCl4, respectively. The values, obtained on a basis of the area under the growth curves (A), were 0.04 ?M (72hEC5(A)), 0.24 ?M (72hEC10(A)) and 0.64 ?M (72hEC20(A)). The experiment with duckweed showed 50% of growth inhibition and the values of 168hEC50(?) were 19.55 ?M and 168hEC50(A) 13.63 ?M of PtCl4. The fronds of duckweed showed strong adverse effect of platinum influence (chlorosis, necrosis). The algal test and the estimation of 72hEC5(A) appears to be the most sensitive.
dcterms:title
Comparison of the effect of platinum on producers in aquatic environment Comparison of the effect of platinum on producers in aquatic environment
skos:prefLabel
Comparison of the effect of platinum on producers in aquatic environment Comparison of the effect of platinum on producers in aquatic environment
skos:notation
RIV/62157124:16270/12:43871415!RIV13-MSM-16270___
n12:predkladatel
n13:orjk%3A16270
n3:aktivita
n11:S
n3:aktivity
S
n3:cisloPeriodika
3
n3:dodaniDat
n4:2013
n3:domaciTvurceVysledku
n5:4771079 n5:4516095 n5:3914240 n5:5752086
n3:druhVysledku
n8:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
128054
n3:idVysledku
RIV/62157124:16270/12:43871415
n3:jazykVysledku
n18:eng
n3:klicovaSlova
ecotoxicology biotests; Lemna minor; Pseudokichneriella subcapitata; platinum
n3:klicoveSlovo
n7:ecotoxicology%20biotests n7:Pseudokichneriella%20subcapitata n7:platinum n7:Lemna%20minor
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[93DE5A73C689]
n3:nazevZdroje
Neuroendocrinology Letters
n3:obor
n17:DJ
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
5
n3:rokUplatneniVysledku
n4:2012
n3:svazekPeriodika
33
n3:tvurceVysledku
Bednářová, Ivana Haasová, Vendula Mikulášková, Hana Němcová, Barbora Beklová, Miroslava
s:issn
0172-780X
s:numberOfPages
5
n15:organizacniJednotka
16270