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Statements

Subject Item
n2:RIV%2F62157124%3A16270%2F13%3A43872355%21RIV14-MSM-16270___
rdf:type
n8:Vysledek skos:Concept
dcterms:description
OBJECTIVES: Trace concentrations of the platinum group elements (PGE; Pt, Pd and Rh) are nowadays an irreplaceable part of environmental analysis and assessment. These rare elements are used as effective substances in automotive catalysts to reduce pollution by emissions originating from fuel combustion. Due to their harmful potential, it is necessary to monitor their content and behaviour in different samples. Effect assessment using ecotoxicological bioassays with organisms at different trophic levels can provide valuable pieces of information on the risk of chemical substances in the ecosystem. DESIGN: The experiments were carried out as described in the OECD Guideline 232 [CSN ISO 11267 - Soil quality - Inhibition of reproduction of Collembola (Folsomia candida) by soil pollutants]. The reproductive effects of palladium (PdCl2) and rhodium (RhCl3) were examined. Concentrations of PGE tested were as follows: 5, 10, 25, 50 and 100 umol.L-1. The EC50 (medium effective concentration) was determined after 28 days of exposure. Inhibition of reproduction of PGE-exposed collembolans was compared against controls. RESULTS: Values of 28dEC50 of PdCl2 and RhCl3 amounted to 21.0 umol.L-1 and 266.22 umol.L-1, respectively. We can confirm that the relative order of toxicities is Pd (II) } Pt(IV) }} Rh(III). CONCLUSION: To the best of our knowledge, this is the first study to use Folsomia candida as an indicator species to assess the risk of soil contamination by palladium and rhodium. However, more toxicity data for various species are needed to evaluate the environmental risks of PGEs in soils. OBJECTIVES: Trace concentrations of the platinum group elements (PGE; Pt, Pd and Rh) are nowadays an irreplaceable part of environmental analysis and assessment. These rare elements are used as effective substances in automotive catalysts to reduce pollution by emissions originating from fuel combustion. Due to their harmful potential, it is necessary to monitor their content and behaviour in different samples. Effect assessment using ecotoxicological bioassays with organisms at different trophic levels can provide valuable pieces of information on the risk of chemical substances in the ecosystem. DESIGN: The experiments were carried out as described in the OECD Guideline 232 [CSN ISO 11267 - Soil quality - Inhibition of reproduction of Collembola (Folsomia candida) by soil pollutants]. The reproductive effects of palladium (PdCl2) and rhodium (RhCl3) were examined. Concentrations of PGE tested were as follows: 5, 10, 25, 50 and 100 umol.L-1. The EC50 (medium effective concentration) was determined after 28 days of exposure. Inhibition of reproduction of PGE-exposed collembolans was compared against controls. RESULTS: Values of 28dEC50 of PdCl2 and RhCl3 amounted to 21.0 umol.L-1 and 266.22 umol.L-1, respectively. We can confirm that the relative order of toxicities is Pd (II) } Pt(IV) }} Rh(III). CONCLUSION: To the best of our knowledge, this is the first study to use Folsomia candida as an indicator species to assess the risk of soil contamination by palladium and rhodium. However, more toxicity data for various species are needed to evaluate the environmental risks of PGEs in soils.
dcterms:title
Impact of platinum group elements on the soil invertebrate Folsomia candida Impact of platinum group elements on the soil invertebrate Folsomia candida
skos:prefLabel
Impact of platinum group elements on the soil invertebrate Folsomia candida Impact of platinum group elements on the soil invertebrate Folsomia candida
skos:notation
RIV/62157124:16270/13:43872355!RIV14-MSM-16270___
n8:predkladatel
n18:orjk%3A16270
n4:aktivita
n15:S
n4:aktivity
S
n4:cisloPeriodika
Suppl. 2
n4:dodaniDat
n13:2014
n4:domaciTvurceVysledku
n7:9847065 n7:4516095 n7:5752086 n7:3914240 n7:4771079
n4:druhVysledku
n12:J
n4:duvernostUdaju
n11:S
n4:entitaPredkladatele
n14:predkladatel
n4:idSjednocenehoVysledku
79027
n4:idVysledku
RIV/62157124:16270/13:43872355
n4:jazykVysledku
n16:eng
n4:klicovaSlova
springtail; Collembola; ecotoxicology; rhodium; palladium
n4:klicoveSlovo
n5:palladium n5:ecotoxicology n5:rhodium n5:Collembola n5:springtail
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[98E93E42FBB7]
n4:nazevZdroje
Neuroendocrinology Letters
n4:obor
n17:EH
n4:pocetDomacichTvurcuVysledku
5
n4:pocetTvurcuVysledku
5
n4:rokUplatneniVysledku
n13:2013
n4:svazekPeriodika
34
n4:tvurceVysledku
Pikula, Jiří Beklová, Miroslava Mikulášková, Hana Bednářová, Ivana Němcová, Barbora
n4:wos
000330901000001
s:issn
0172-780X
s:numberOfPages
6
n9:organizacniJednotka
16270