Coliforms and Salmonella in seawater near to domestic sewage sources in Fortaleza (Ceará, Brazil).
The bacteriological conditions of the coastal region of Fortaleza (Ceará, Brasil), including the coastal zones of the Ceará and Coco rivers, were examined.
The study was conducted during June, September and December 1993, and March 1994.
The region was divided into two areas :
(i) Direct Influence Area (DIA), consisting of 20 sampling stations located near to discharge zones of the submarine pipeline system, where collections were carried out at the surface, and (ii) Indirect Influence Area (IIA), located near to the coastal zone, including Barra do Ceará,
Volta de Jurema,
Farol and Caça e Pesca beaches, totalling 26 sampling stations.
The most probable number (MPN) of both total and fecal coliforms in DIA was positive only in station number 6, near to the sewage discharge exit.
The following bacteria were identified : Citrobacter sp., Enterobacter aero genes and Escherichia coli.
Kartodromo beach was contaminated throughout the sampling period.
Results of total fecal MPN was essentially lower than 3.0 x 102 coliforms/100 ml at Caça e Pesca beach.
In December, at both DIA and IIA, Salmonella was identified in several samples.
In DIA, the spatial distribution for Salmonella suggests that there should be a coastal sea current from east to west along the coastline.
In IIA, Salmonella was identified at Kartodromo and Farol beaches throughout the sampling period.
Mots-clés Pascal : Salmonella, Enterobacteriaceae, Bactérie, Coliforme, Milieu marin, Pollution eau, Eau usée domestique, Brésil, Amérique du Sud, Amérique, Qualité eau, Contamination biologique, Dénombrement
Mots-clés Pascal anglais : Salmonella, Enterobacteriaceae, Bacteria, Coliforms, Marine environment, Water pollution, Domestic waste water, Brazil, South America, America, Water quality, Biological contamination, Enumeration(counting)
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0226601
Code Inist : 001D16A04D. Création : 11/09/1998.