Distribuição de coprostanol (5beta(H)-colestan-3beta-ol) em sedimentos superficiais da Baía de Guanabara: indicador da poluição recente por esgotos domésticos

AUTOR(ES)

Carreira, Renato, Wagener, Angela de L. Rebello, Fileman, Timothy, Readman, James W.

FONTE

Química Nova

DATA DE PUBLICAÇÃO

2001-02

RESUMO

A critical evaluation is presented on the use of faecal sterols for the identification of sewage contamination in Guanabara Bay. Sediments were collected from 8 stations in the bay selected as representative of different contamination levels. GC/MS determination of faecal sterols gave: coprostanol, 335 - 40000 ng g-1; coprostanone, 112-4136 ng g-1; cholesterol, 1407-7800 ng g-1; cholestanol, 2011 - 10900 ng g-1 and cholestanone, 655-7954 ng g-1. The observed concentration is in accordance with the presence of known pollution sources, however, concentration ratios of different sterols species produced unclear results evidently influenced by primary production and microbial processes.

Documentos Relacionados

• Marcadores orgânicos de contaminação por esgotos sanitários em sedimentos superficiais da baía de Santos, São Paulo
• A ilha da utopia na Baía de Guanabara: de Vespúcio a Pigafetta
• Distribuição de selênio em organismos marinhos da Baía de Guanabara/ RJ
• Estimativa do fluxo de amônia na interface ar-mar na Baía de Guanabara: estudo preliminar
• 7 beta-hydroperoxycholest-5-en-3 beta-ol, a component of human atherosclerotic lesions, is the primary cytotoxin of oxidized human low density lipoprotein.