Document Detail

Bioaccumulation of palladium, platinum and rhodium from urban particulates and sediments by the freshwater isopod Asellus aquaticus.
MedLine Citation:
PMID:  11791847     Owner:  NLM     Status:  MEDLINE    
The three-way catalytic converters introduced to oxidize and reduce gaseous automobile emissions represent a source of platinum group elements (PGEs), in particular platinum, palladium and rhodium, to the urban environment. Abrasion of automobile exhausts leads to an increase of the concentration of PGEs in environmental matrices such as vegetation, soil and water bodies. The bioaccumulation of Pd, Pt and Rh by the freshwater isopod Asellus aquaticus was studied in natural ecosystems and under laboratory conditions. Owing to the low concentration level (ng g(-1)) of PGEs in the animals studied. analyses were performed with a quadrupole inductively coupled plasma mass spectrometry (ICP-MS) and hafnium, copper, yttrium, rubidium, strontium and lead were monitored for spectral interference correction. Asellus aquaticus collected in an urban river showed a content (mean +/- s) of 155.4 +/- 73.4, 38.0 +/- 34.6, and 17.9 +/- 12.2 ng g(-1) (dry weight) for Pd, Pt and Rh, respectively. The exposure of Asellus aquaticus to PGE standard solutions for a period of 24h give bioaccumulation factors of Bf: 150, 85, and 7 for Pd, Pt and Rh, respectively. Exposure of Asellus aquaticus to environmental samples for different exposure periods demonstrated that PGE bioaccumulation is time dependent. and shows a higher accumulation for the materials with a higher PGE content. While all three elements have the same uptake rate for exposure to catalyst materials, for exposure to environmental materials they havc a different uptake rate which can be attributed to transformations of the PGE species in the environment.
M Moldovan; S Rauch; M Gómez; M A Palacios; G M Morrison
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Water research     Volume:  35     ISSN:  0043-1354     ISO Abbreviation:  Water Res.     Publication Date:  2001 Dec 
Date Detail:
Created Date:  2002-01-15     Completed Date:  2002-06-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0105072     Medline TA:  Water Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  4175-83     Citation Subset:  IM    
Departamento de Quimíca Analítica, Facultad de Ciencias Quimícas, Universidad Complutense de Madrid, Spain.
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MeSH Terms
Biological Availability
Environmental Exposure*
Geologic Sediments / chemistry
Palladium / pharmacokinetics*
Particle Size
Platinum / pharmacokinetics*
Rhodium / pharmacokinetics*
Tissue Distribution
Urban Population
Vehicle Emissions / analysis*
Reg. No./Substance:
0/Vehicle Emissions; 7440-05-3/Palladium; 7440-06-4/Platinum; 7440-16-6/Rhodium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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