Assessment of bioavailability and potential toxicity of Cu, Zn and Pb, a case study in Jurujuba Sound, Rio de Janeiro, Brazil
作者： P.F.F. Abuchacra , V.M.C. Aguiar , R.C. Abuchacra , J.A. Baptista Neto , A.S. Oliveira
DOI: 10.1016/J.MARPOLBUL.2015.08.012
关键词: Bioavailability 、 Zinc 、 Biogeochemical cycle 、 Geology 、 Environmental chemistry 、 Composition (visual arts) 、 Fractionation 、 Contamination 、 Organic matter 、 Geologic Sediments
摘要: Potential toxicity of sedimentary Cu, Zn and Pb were evaluated based on their fractionation at the inner part Jurujuba, a small sound eastern margin Guanabara Bay, Rio de Janeiro. Biogeochemical composition revealed an environment extremely enriched with anthropic organic matter characterized as detrital heterotrophic system. The analysis showed that exhibited more affinity residual fraction followed by amorphous Fe/Mn fraction. Cu expressive in one crystalline fraction, respectively. According to Igeo index, sediments proved be highly polluted moderated Pb. Despite actual contamination Jurujuba sediments, mobility these elements seems limited since most excessive concentrations found less available fractions, depending extreme physico-chemical variations released.
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