By W. C. Pfeiffer, M. Fiszman, L. C. Lacerda (auth.), Dr. Ulrich Seeliger, Dr. Luiz Drude de Lacerda, Dr. S. R. Patchineelam (eds.)
For the 1st time a cutting-edge of current steel pollutants alongside the beach of Latin the US is supplied. This choice of papers from a convention held in August 1986 in Rio de Janeiro, Brazil is designed to notify readers of contemporary advances in a massive, interdisciplinary box. fundamental concentration is on: - steel Surveys, Metals in Sediments, Metals in Biota, steel delivery and Cycles, steel tracking. a last bankruptcy combines end, outlook and suggestions of the way to grasp the serious scenario of steel concentrations in coastal environments of Latin the US. This ebook fills a long-standing hole within the literature and should be of leading curiosity to researchers, scholars and execs in geology, biology and chemistry.
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Extra info for Metals in Coastal Environments of Latin America
REFERENCES Abdullah MI, Royle LG (1974) A study of the dissolved and particulate trace elements in Bristol Channel. J mar bioi Ass UK 54 :5Bl-597 Amore C, Castagna A, Currao A, Giuffrida E, Sarro F, Sinatra F (19B3) Relationship between heavy metals and sediments in the Southern Ionian continental shelf. Mar Pollut Bull 14 :352-356 Anderson RL, Bancroft TA (1952) Statistical theory in resarch. McGraw-Hili, New York Armstrong PB, Hanson GM, Gaudette HE (1977) Minor elements in sediments of Great Bay Estuary, New Hampshire.
4lLm membrane filters. The filterate was added back to the solid material resulting from the centrifugation and dryed at 80°C to constant weight. 5 HCI with a solid/liquid ratio of 1: 20 in polyethylene flasks at room temperature for 16 hours under continuous stirring (Agemian and Chau 1976, 1977). The analyses of Cd, Pb, Cu, Zn, Cr, Ni, Co, Mn and Fe were carried out by flame atomic absorption spectrometry. All metals were analysed using an air/acetylene flame except for Cr, which was analysed with an N2 O/acetylene flame.
Arroio Pavuna may be considered as the main source of Cr to the Jacarepagua lagoon although the enrichment factor is not as high as observed for Cd. 4 and 43ppm, with a mean value of 27 ± 13ppm. The relatively large range obtained for the background samples might be due to atmospheric dispersion of lead by means of gasoline combustion or sample contamination by domestic effluents (F orstner and Wittmann 1979). Due to variations of Pb concentration in the background 27 samples and the atmospheric contribution of th is metal, the enrichment factors for Pb (Table 2) do not reflect the direct influence of industrial and domestic effluents in the rivers.