Abstract
Blood Pb concentration in a South American toad Bufo arenarum population ( n=152) was determined over 10 samplings carried out between December 1996 and November 1999. The studied population lived in the surroundings of the La Plata City, the largest industrial-urban setting of the Buenos Aires Province, Argentina. The presence of the metal was detected in all the samples tested, the mean concentration range being 1.99–4.66 mg dl −1. Some preliminary environmental data on soil content of Pb in the sampling area suggest the anthropogenic origin of the metal possibly due to high rate of Pb-containing gasoline utilisation until recently. The reported results may reflect a sequel of a sustained local air–soil–water pollution process.
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