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Statements

Subject Item
n2:RIV%2F62157124%3A16270%2F11%3A43870689%21RIV12-MSM-16270___
rdf:type
skos:Concept n6:Vysledek
dcterms:description
An actual problem in the environmental burden begins to be platinum group elements (PGEs), which come from automobile traffic. Increasing use of PGEs in exhaust catalysts and the runoff from surroundings of busy highways, lead to increased spread and accumulation of these metals in water ecosystem. To determine how these metals may affect the antioxidant activity of aquatic plants we chose duckweed (Lemna minor L.) as a bioindicator. In this experiment we used spectrophotometric methods for determination of the antioxidant activity. Plants were exposed by the solutions of SIS and selected metals from PGEs: platinum (PtCl4) and rhodium (RhCl3). Lemna minor was cultivated in various concentrations of platinum and rhodium (1, 10 and 100 mýmol.l-1), respectively. The experiment lasted for seven days and sampling days were 2nd, 4th and 6th day. We chose two methods for this determination - FRAP and ABTS radical method. The influence of selected PGEs on Lemna minor was observed as a change of plant antioxidant activity. In the case of PtCl4 is an evident dependence between duration of the experiment and increasing concentrations of metals, but we do not observe such a big trend of increase of the antioxidant activity in the test with rhodium (RhCl3). An actual problem in the environmental burden begins to be platinum group elements (PGEs), which come from automobile traffic. Increasing use of PGEs in exhaust catalysts and the runoff from surroundings of busy highways, lead to increased spread and accumulation of these metals in water ecosystem. To determine how these metals may affect the antioxidant activity of aquatic plants we chose duckweed (Lemna minor L.) as a bioindicator. In this experiment we used spectrophotometric methods for determination of the antioxidant activity. Plants were exposed by the solutions of SIS and selected metals from PGEs: platinum (PtCl4) and rhodium (RhCl3). Lemna minor was cultivated in various concentrations of platinum and rhodium (1, 10 and 100 mýmol.l-1), respectively. The experiment lasted for seven days and sampling days were 2nd, 4th and 6th day. We chose two methods for this determination - FRAP and ABTS radical method. The influence of selected PGEs on Lemna minor was observed as a change of plant antioxidant activity. In the case of PtCl4 is an evident dependence between duration of the experiment and increasing concentrations of metals, but we do not observe such a big trend of increase of the antioxidant activity in the test with rhodium (RhCl3).
dcterms:title
The impact of selected platinum group elements on antioxidant activity of duckweed (Lemna minor) The impact of selected platinum group elements on antioxidant activity of duckweed (Lemna minor)
skos:prefLabel
The impact of selected platinum group elements on antioxidant activity of duckweed (Lemna minor) The impact of selected platinum group elements on antioxidant activity of duckweed (Lemna minor)
skos:notation
RIV/62157124:16270/11:43870689!RIV12-MSM-16270___
n6:predkladatel
n7:orjk%3A16270
n3:aktivita
n4:Z n4:S
n3:aktivity
S, Z(MSM6215712402)
n3:dodaniDat
n17:2012
n3:domaciTvurceVysledku
n11:4516095 n11:4771079
n3:druhVysledku
n10:D
n3:duvernostUdaju
n21:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
203711
n3:idVysledku
RIV/62157124:16270/11:43870689
n3:jazykVysledku
n12:eng
n3:klicovaSlova
spectrometry; antioxidant activity; Lemna minor; platinum group elements (PGEs)
n3:klicoveSlovo
n9:antioxidant%20activity n9:spectrometry n9:platinum%20group%20elements%20%28PGEs%29 n9:Lemna%20minor
n3:kontrolniKodProRIV
[92657D4F7147]
n3:mistoKonaniAkce
Brno
n3:mistoVydani
Brno
n3:nazevZdroje
XI. Pracovní setkání fyzikálních chemiků a elektrochemiků
n3:obor
n16:EH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
6
n3:rokUplatneniVysledku
n17:2011
n3:tvurceVysledku
Adam, Vojtěch Soukupová, Ivana Kizek, René Beklová, Miroslava Straková, Lenka Sochor, Jiří
n3:typAkce
n20:CST
n3:zahajeniAkce
2011-06-01+02:00
n3:zamer
n18:MSM6215712402
s:numberOfPages
3
n19:hasPublisher
Mendelova zemědělská a lesnická univerzita v Brně
n15:isbn
978-80-7375-514-0
n8:organizacniJednotka
16270