Platinum uptake by the freshwater isopod Asellus aquaticus in urban rivers.
Platinum has been increasing in the environment as a result of emissions from catalytic converters. The platinum emitted is principally located in the vicinity of roads but might be transported to urban rivers through highway and urban run-off water. Platinum concentrations in the freshwater isopod Asellus aquaticus were measured for two urban rivers and a stormwater detention pond. Concentrations ranged from 0.04 to 12.4 micrograms g-1 for direct analysis and from 0.16 to 4.5 micrograms g-1 after depuration. Analyses of water, pore water and sediments indicate that platinum in urban rivers is mostly found in the sediments and these provide the major contribution of platinum to Asellus aquaticus. Exposure experiments showed the importance of platinum speciation for uptake.
Rauch
S
S
Department of Sanitary Engineering, Chalmers University of Technology, Göteborg, Sweden. seb@sani.chalmers.se
Morrison
G M
GM
D000818:Animals; D003445:Crustacea / Q000378:metabolism*; D004563:Electrochemistry / Q000379:methods / Q000592:standards; D004784:Environmental Monitoring; D005618:Fresh Water; D019015:Geologic Sediments / Q000032:analysis; D006801:Humans; D010984:Platinum / Q000032:analysis / Q000493:pharmacokinetics* / Q000633:toxicity; D011786:Quality Control; D014504:Urban Health; D001335:Vehicle Emissions; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000493:pharmacokinetics* / Q000633:toxicity
D001335:Vehicle Emissions; D014874:Water Pollutants, Chemical; D010984:Platinum