Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2018-01-29T22:57:17Z No. of bitstreams: 1 Disserta??o Monise da Silva Pereira.pdf: 3743767 bytes, checksum: 4d2068c2083642fa8f904e5754b23885 (MD5) / Made available in DSpace on 2018-01-29T22:57:17Z (GMT). No. of bitstreams: 1 Disserta??o Monise da Silva Pereira.pdf: 3743767 bytes, checksum: 4d2068c2083642fa8f904e5754b23885 (MD5) Previous issue date: 2016-04-27 / This study aimed to quantify and spatialise the chemical elements copper (Cu), zinc (Zn), nickel (Ni), lead (Pb), cadmium (Cd), arsenic (As), chromium (Cr), tin (Sn), iron (Fe), manganese (Mn), aluminium (Al), beryllium (Be), barium (Ba), lithium (Li), cobalt (Co) and vanadium (V) in surface sediments of the Serinah?m river estuary. For quantification Inductively Coupled Plasma- Optical Emission Spectrometry (ICP/OES) was used. It was observed that, in general, the chemicals do not exceed the limitrophe Brazilian reference values, indicating the quality of the estuary waters. Moreover, anthropogenic activities along the drainage basin did not seem to affect the environmental dynamics of the Serinah?m river estuary, not demonstrating risks to human health or the environment. It is noteworthy that most of the quantified elements showed, with spatialization, a decrease in concentration toward the mouth of the estuary, concentrating upstream, after the river discharge point. When compared to other estuarine environments the Serinah?m river estuary showed low concentrations, highlighting the higher concentrations for the chemical elements Al, Fe and Mn, that are elements found in high concentrations in the lithology of the estuary basin. With respect to the particle size concentration, the first segment showed the highest concentration of chemical elements (Fe, Al, Co, Cr, Ni, V, Zn, Mn e Cu), since, due to the presence of mangrove areas, river islands become sediment retention barriers and the presence of small tributaries help in the transport of sediments that accumulate in this region. / Este estudo objetivou quantificar e espacializar os elementos qu?micos Cobre (Cu), Zinco (Zn), N?quel (Ni), Chumbo (Pb), C?dmio (Cd), Ars?nio (As), Cromo (Cr), Estanho (Sn), Ferro (Fe), Mangan?s (Mn), Alum?nio (Al), Ber?lio (Be), B?rio ( Ba), L?tio (Li), Cobalto (Co) e Van?dio (V), em sedimentos superficiais do estu?rio do rio Serinha?m. Para a quantifica??o foi utilizado a Espectrometria de Emiss?o ?ptica por Plasma Acoplado Indutivamente ? ICP/OES. Observou-se que, de forma geral, nenhum dos elementos qu?micos ultrapassa os valores lim?trofes referenciais brasileiros, indicando a qualidade das ?guas do estu?rio. Al?m disso, as atividades antr?picas desenvolvidas ao longo da bacia de drenagem parecem n?o afetar a din?mica ambiental do estu?rio do rio Serinha?m, n?o demonstrando riscos ? sa?de humana ou ao ambiente de forma ampla. Ressalta-se que a maioria dos elementos quantificados demonstrou, com a espacializa??o, um decr?scimo da concentra??o em dire??o ? foz do estu?rio, ou seja, concentrando-se a montante, logo ap?s o ponto de descarga fluvial. Quando comparado a outros ambientes estuarinos o estu?rio do rio Serinha?m apresentou concentra??es baixas, destacando as maiores concentra??es para os elementos qu?micos Al, Fe e Mn que s?o elementos encontrados em altas concentra??es na litologia da bacia do estu?rio do rio Serinha?m. Com rela??o ? concentra??o granulom?trica, o 1? segmento apresentou a maior concentra??o de elementos qu?micos (Fe, Al, Co, Cr, Ni, V, Zn, Mn e Cu), visto que devido ? presen?a de ?reas de manguezais, ilhas fluviais se tornam uma barreira de reten??o de sedimentos, e a presen?a de pequenos tribut?rios ajuda no transporte de sedimentos que se acumulam nessa regi?o.