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	Provedor de dados BABT (2) Autor Ferreira,Alexandre Gomes (2) Carvalho,Carlos Euardo Veiga de (1) Faria,Vicente Vieira (1) Lessa,Rosangela Paula Teixeira (1) Machado,André Luís dos Santos (1) Silva,Francisco Marcante Santana da (1) Zalmon,Ilana Rosental (1) Mais... Palavra-chave Carcharhinus signatus (1) Heavy metals (1) Mercury (1) Mollusk (1) Shark (1) Southwestern Atlantic Ocean (1) Spatial variation (1) Temporal variation (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2004 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Temporal and spatial variation on heavy metal concentrations in the bivalve Perna perna (LINNAEUS, 1758) on the northern coast of Rio de Janeiro State, Brazil BABT Ferreira,Alexandre Gomes; Machado,André Luís dos Santos; Zalmon,Ilana Rosental. Heavy metal (Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) concentrations were studied in Perna perna from three beaches (Barra do Furado, Buena and Ponta do Retiro) on the northern coast of Rio de Janeiro State by ICP-AES. The average concentration was 0.3 ± 0.04 (Cd); 1.9 ± 0.6 (Cr); 6.1 ± 0.7 (Cu); 1,130 ± 113 (Fe); 22 ± 3.2 (Mn); 9.3 ± 4.6 (Ni); 0.4 ± 0.2 (Pb); 44 ± 5.8 (Zn) µg.g-1 dry weight. There were no significant difference for almost all the studied metals in relation to sex. Although, significant spatial variations (p < 0.05) occurred for Cr, Pb and Ni with higher values for Barra do Furado. Temporal variations were significant (p < 0.05) at the three beaches, however, no trends of accumulation were observed. The metal concentrations were similar to... Tipo: Info:eu-repo/semantics/article Palavras-chave: Heavy metals; Mollusk; Spatial variation; Temporal variation. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000200020 Total mercury in the night shark, Carcharhinus signatus in the western equatorial Atlantic Ocean BABT Ferreira,Alexandre Gomes; Faria,Vicente Vieira; Carvalho,Carlos Euardo Veiga de; Lessa,Rosangela Paula Teixeira; Silva,Francisco Marcante Santana da. Mercury is the only element capable to biomagnificate along the food chain, and carnivorous fish tend to accumulate high concentrations of this element. Total mercury in muscle tissue of Carcharhinus signatus sampled along the western equatorial Atlantic Ocean was measured by atomic emission spectrophotometry with ICP/AES. The average total mercury concentrations were consistently greater than the maximum limit for human consumption established by the Brazilian Health Ministry for carnivorous fishes (1000 µg. kg-1 w.w.). Therefore, an average consumption of 0.1 kg/day of C. signatus would result in an average daily ingestion of 174.2 µg of Hg, more than five times the 30 µg/day intake established by the World Health Organization. In the range of lengths... Tipo: Info:eu-repo/semantics/article Palavras-chave: Mercury; Shark; Carcharhinus signatus; Southwestern Atlantic Ocean. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400016 Registros recuperados: 2 Primeira ... 1 ... Última

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