Distribution and ecotoxicology of bioavailable metals and As in surface sediments of Paraguaçu estuary, Todos os Santos Bay, Brazil.
作者： Taís de S Pereira , Ícaro TA Moreira , Olívia MC de Oliveira , Mariana C Rios , ACS Wilton Filho
DOI: 10.1016/J.MARPOLBUL.2015.07.031
关键词:
摘要: Surface sediments collected in the intertidal zone of Paraguacu estuary July, 2013, were analyzed for organic matter, nitrogen, phosphorus, grain size fractions and partial concentrations 16 metals. The USEPA 3051A method ICP-OES CV-AAS techniques chosen to metal analysis. Pollution indices (EF, Igeo PIN) a comparison with sediment quality guidelines (UET, ERL, ERM, TEL PEL NOAA) conducted order evaluate potential impacts over area. Principal Component Analysis (PCA) Pearson correlation results showed importance matter content fine-grained fraction on control bioavailable metals distribution. already has anthropogenic enrichment relative background level, especially Mn, whose values exceeded almost 30 times at one site (Mn: 1197.30 mg kg(-1)). However, levels are still below reference exception Hg (Hg: 0.25 kg(-1), ERL).
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