Levels of lead and cadmium in mineral supplements for cattle commercialized in Londrina

Wilmar Sachetin Marçal, Iara de Oliveira Buture, Marcos Coelho de Carvalho, Maíra Salomão Fortes, Rodrigo de Andrade e Silva

Abstract


We measured lead and cadmium concentrations in samples of mineral mixtures commercialized in Londrina city. Lead and cadmium content were determined by inductively coupled plasma atomic emission spectrometry. Considering maximum concentrations recommended by National Research Council (1996) and Association of American Feed Control Officials Incorporated (2001), of the 10 analyzed samples, 06 had values greater than 30 ppm of lead and all of them had values greater than 0.5 ppm of cadmium. These findings show the necessity for careful industrial monitoring because some mineral mixtures contain sufficient lead and cadmium to cause bovine toxicity.

Keywords


Heavy metals; Lead; Cadmium; Mineral supplements; Cattle.



DOI: http://dx.doi.org/10.5433/1679-0359.2004v25n4p359

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional