Origin and composition of particulate organic matter in the estuarine-lagoon complex Mundaú-Manguaba using lipids as molecular markers / Origem e composição da matéria orgânica particulada no complexo estuarino-lagunar de Mundaú-Manguaba utilizando lipídios como marcadores moleculares

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

The Mundaú-Manguaba estuarine lagoon system is located in Maceió, Alagoas, Brazil. This region has been suffering an accelerated process of environmental degradation through many antropic activities like urban growth, sugar-cane processing, cattle breeding, industrials waste and sewage. The aim of this work is to evaluate the suspended particulate matter composition and distribution with organic geochemistry markers to identify the potential sources and mixing processes in the system during the wet and the dry period. The water samples were collected at the surface (<1m of depth), using a 4L glass bottle. Lipids were extracted by Soxhlet and quantified by gas chromatography-mass spectrometry. Considering the obtained results, a predominance of autochthonous sources of organic matter was established for the system. However, the presence of alochthonous and anthropic also was observed with lower influence during the dry period.

ASSUNTO(S)

oceanografia quimica lipids organic matter material particulado particulate matter matéria orgânica lipídios

ACESSO AO ARTIGO

Documentos Relacionados