Química Nova | |
Esterois como indicadores do acúmulo de esgotos domésticos em sedimentos de um sistema estuarino-lagunar tropical (Mundaú-Manguaba, AL) | |
Michelle Passos Araujo1  Talitha Lopes Ferreira Da Costa1  Renato Da Silva Carreira1  | |
[1] ,Universidade do Estado do Rio de Janeiro Faculdade de Oceanografia Rio de Janeiro RJ ,Brasil | |
关键词: fecal contamination; sediment core; coprostanol; | |
DOI : 10.1590/S0100-40422011000100013 | |
来源: SciELO | |
【 摘 要 】
The history of sewage contamination in the Mundaú-Manguaba estuarine lagoon system (NE Brazilian coastal zone) was evaluated through the concentration of sterols in sediment cores. The concentration of coprostanol increased towards the surface sediments, with the maximum of 5.65 µg g-1 at 0-2 cm sediment layer in Mundaú. Manguaba exhibited a lower level of contamination. The ratio cholestanol/cholesterol suggested degradation of coprostanol only before the burial of organic matter in the sediment. This feature, together with information of population growth in the watershed, allowed the estimation of a sedimentation rate of 0.90 cm year-1 to the Mundaú lagoon.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
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