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Biocontamination in Metal Traces (Pb, Cd) of Waters, Sediments and Fish from Urban and Periurban Marine Perimeters in the Community of Lokossa in Benin

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Journal of Agricultural Chemistry and Environment 2021年第4期10卷 436-446页

作者： Armelle Sabine Yélignan Hounkpatin menouwesso harold hounhouigan Laura Loko Faustin Assongba Eric Bio Nikki Sare Interfaculty Center for Training and Research in Environment for Sustainable Development (CIFRED) University of Abomey-Calavi Abomey-Calavi Benin Technical Higher Teacher Training School (ENSET) National University of Sciences Technologies Engineering and Mathematics (UNSTIM) Abomey Benin School of Sciences and Techniques for Conservation and Processing of Agricultural Products National University of Agriculture Ketou Benin Faculty of Sciences and Technology National University of Sciences Technologies Engineering and Mathematics (UNSTIM) Abomey Benin Inter-Regional University of Industrial Engineering Biotechnologies and Applied Sciences (IRGIB-Africa) Cotonou Benin

In Benin, market gardening has become a new profession and plays an important role in the supply of fresh vegetables. In the coastal regions, fish farming is practiced on the outskirts of market gardening sites. However, poorly regulated cultivation practices and increasing pollution do not necessarily guarantee the sanitary quality of the products delivered. This study aims to evaluate the physico-chemical qualities of the water used for watering and, secondly, the lead and cadmium contamination of the water used for watering, the soil (sediment) and the fish products (fish) on the urban market gardening perimeter in the commune of Lokossa in Benin. These various samples taken for this purpose were analysed at the Ministry of Health’s Water and Food Quality Control Laboratory. We noted pollution of organic elements through the physico-chemical parameters measured such as temperature, NTK, COD, BOD and total phosphorus and confirmed by average lead and cadmium levels of 0.42 mg/L in water, 0.52 mg/L in sediment and 0.31 mg/L to 0.76 mg/L in fish tissue (Carp and Catfish) for lead and 0.07 mg/L in water, 0.1 mg/L in sediment and 0.5 mg/L in fish for cadmium. These rates are well above the normal values accepted by the GESAMP, PNEC INERIS and FAO standards. The consequences of this contamination are health risks for consumers.

关键词： Fish Soil Water Lead Cadmium Lokossa

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