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Statements

Subject Item
n2:RIV%2F62157124%3A16270%2F14%3A43873175%21RIV15-MSM-16270___
rdf:type
n15:Vysledek skos:Concept
dcterms:description
OBJECTIVES: The platinum group elements (PGE) platinum (Pt), palladium (Pd), and rhodium (Rh) are used in automobile catalytic converters, from which they have been emitted into the environment to an increasing degree over the last 20 years. Despite the bioavailability of these metals to plants and animals, studies determining the effects of PGE on organisms are extremely rare. Enchytraeids are ecologically relevant soil organisms, due to their activity in decomposition and bioturbation in many soil types worldwide. DESIGN: The experiments were carried out as described in the OECD Guideline 220 [CSN EN ISO 16387 - Soil quality - Effects of pollutants on Enchytraeidae (Enchytraeus sp.) - Determination of effects on reproduction]. The reproductive effects of platinum (PtCl4), palladium (PdCl2) and rhodium (RhCl3) were examined. The concentrations of PGE tested were as follows: 5, 10, 25, 50 and 100 mýmol.L-1 PdCl2; 50, 100, 150, 200 and 250 mýmol.L-1 PtCl4/RhCl3. The EC50 (medium effective concentration) was determined after 28 days of exposure. The inhibition of the reproduction of PGE-exposed enchytraeids was compared against controls. RESULTS: Values of 28dEC50 of PtCl4, PdCl2 and RhCl3 amounted to 161.9 mýmol.L-1, 70.0 mýmol.L-1 and 246.6 mýmol.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 Enchytraeus crypticus as an indicator species to assess the risk of soil contamination by platinum, palladium and rhodium. Results of this study contribute important data on the ecotoxicity of a rarely studied elements. OBJECTIVES: The platinum group elements (PGE) platinum (Pt), palladium (Pd), and rhodium (Rh) are used in automobile catalytic converters, from which they have been emitted into the environment to an increasing degree over the last 20 years. Despite the bioavailability of these metals to plants and animals, studies determining the effects of PGE on organisms are extremely rare. Enchytraeids are ecologically relevant soil organisms, due to their activity in decomposition and bioturbation in many soil types worldwide. DESIGN: The experiments were carried out as described in the OECD Guideline 220 [CSN EN ISO 16387 - Soil quality - Effects of pollutants on Enchytraeidae (Enchytraeus sp.) - Determination of effects on reproduction]. The reproductive effects of platinum (PtCl4), palladium (PdCl2) and rhodium (RhCl3) were examined. The concentrations of PGE tested were as follows: 5, 10, 25, 50 and 100 mýmol.L-1 PdCl2; 50, 100, 150, 200 and 250 mýmol.L-1 PtCl4/RhCl3. The EC50 (medium effective concentration) was determined after 28 days of exposure. The inhibition of the reproduction of PGE-exposed enchytraeids was compared against controls. RESULTS: Values of 28dEC50 of PtCl4, PdCl2 and RhCl3 amounted to 161.9 mýmol.L-1, 70.0 mýmol.L-1 and 246.6 mýmol.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 Enchytraeus crypticus as an indicator species to assess the risk of soil contamination by platinum, palladium and rhodium. Results of this study contribute important data on the ecotoxicity of a rarely studied elements.
dcterms:title
Impact of platinum group elements on the soil invertebrate Enchytraeus crypticus Impact of platinum group elements on the soil invertebrate Enchytraeus crypticus
skos:prefLabel
Impact of platinum group elements on the soil invertebrate Enchytraeus crypticus Impact of platinum group elements on the soil invertebrate Enchytraeus crypticus
skos:notation
RIV/62157124:16270/14:43873175!RIV15-MSM-16270___
n3:aktivita
n10:S
n3:aktivity
S
n3:cisloPeriodika
Suppl.2
n3:dodaniDat
n14:2015
n3:domaciTvurceVysledku
n5:9847065 n5:4771079 n5:3914240 n5:4516095 n5:4407210
n3:druhVysledku
n4:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
20697
n3:idVysledku
RIV/62157124:16270/14:43873175
n3:jazykVysledku
n11:eng
n3:klicovaSlova
enchytraeids; reproduction; potworm; ecotoxicology; rhodium; palladium
n3:klicoveSlovo
n6:potworm n6:enchytraeids n6:palladium n6:ecotoxicology n6:rhodium n6:reproduction
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[0F9A0E5D4DB4]
n3:nazevZdroje
Neuroendocrinology Letters
n3:obor
n7:EH
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:rokUplatneniVysledku
n14:2014
n3:svazekPeriodika
35
n3:tvurceVysledku
Pikula, Jiří Bednářová, Ivana Havelková, Barbora Kováčová, Veronika Beklová, Miroslava
n3:wos
000351064900005
s:issn
0172-780X
s:numberOfPages
8
n16:organizacniJednotka
16270