dc.contributorUniversidade Federal de São Carlos (UFSCar)
dc.contributorUniversidade Federal de Alagoas (UFAL)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorInstituto Nacional de Pesquisas da Amazônia (INPA)
dc.date.accessioned2014-05-20T14:19:27Z
dc.date.available2014-05-20T14:19:27Z
dc.date.created2014-05-20T14:19:27Z
dc.date.issued2012-09-01
dc.identifierJournal of The Brazilian Chemical Society. São Paulo: Soc Brasileira Quimica, v. 23, n. 9, p. 1711-1718, 2012.
dc.identifier0103-5053
dc.identifierhttp://hdl.handle.net/11449/25872
dc.identifier10.1590/S0103-50532012005000034
dc.identifierS0103-50532012000900017
dc.identifierWOS:000310015100018
dc.identifierS0103-50532012000900017.pdf
dc.identifier3589137264364456
dc.identifier0000-0001-7264-3396
dc.description.abstractHigh mercury concentrations in different environmental matrices in the Amazon have been attributed to mining activities. However, high concentrations of mercury are also present in the soil and water in places like in the middle of the Negro River Basin, which is far away from any anthropogenic emission sources. The Amazon region is characterized by two different regional seasons, with well-defined flood and low water periods. The objective of this work was to investigate the seasonal influences of the interaction between mercury and aquatic humic substances (AHS), which are the main agents of the natural organic complexation capacity. The results of the multivariate statistical analysis of the data showed that the humic substances had different structural characteristics, depending on each season. The ability of humic substances to form complexes with Hg(II) is not directly related to their carbon content, but to the nature and availability of the functional groups present in its structure. The functional groups are carboxylic and aromatic directly related to the higher complexation capacity of AHS by mercury ions.
dc.languageeng
dc.publisherSoc Brasileira Quimica
dc.relationJournal of the Brazilian Chemical Society
dc.relation1.444
dc.relation0,357
dc.rightsAcesso aberto
dc.sourceWeb of Science
dc.subjectaquatic humic substances
dc.subjectseasonality
dc.subjectNegro River Basin
dc.subjectAmazonia
dc.subjectmercury
dc.titleInfluence of Seasonality on the Interaction of Mercury with Aquatic Humic Substances Extracted from the Middle Negro River Basin (Amazon)
dc.typeArtículos de revistas


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