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  1. Heavy metals in edible green vegetables grown along the sites of the Sinza and Msimbazi rivers in Dar es Salaam, Tanzania.

    Article - En anglais

    Four heavy metals (cadmium, copper, lead and zinc) were determined in some green vegetables cultivated along the sites of the Sinza and Msimbazi rivers.

    Atomic absorption spectrophotometry was used to estimate and evaluate the levels of these metals in the vegetables.

    The contributions of the vegetables to the daily intake of the heavy metals from the vegetables were determined.

    The results showed the following ranges (mg/100 g) : 0.01-0.06,0.25-1.60,0.19-0.66, and 1.48-4.93 for cadmium, copper, lead and zinc, respectively.

    Some vegetables contained high levels beyond the permissible levels given by FAO and WHO for human consumption.

    When the mean levels of cadmium, copper, lead and zinc (0.20,7.95,3.95 and 33.75 mg per kg, respectively) were taken into account, the daily intake contribution of these metals was found to be 21.60 mug, 858.60 mug, 426.60 mug and 3.65 mg for cadmium, copper, lead and zinc, respectively.

    Mots-clés Pascal : Spectrométrie absorption atomique, Dose journalière, Analyse chimique, Amaranthus, Amaranthaceae, Dicotyledones, Angiospermae, Spermatophyta, Brassica chinensis, Cruciferae, Lactuca sativa, Compositae, Brassica rapa, Vigna unguiculata, Leguminosae, Cucurbita moschata, Cucurbitaceae, Devenir polluant, Déchet industriel, Cadmium, Cuivre, Plomb, Zinc, Vallée rivière, Tanzanie, Afrique, Métal lourd, Plante cultivée, Polluant, Plante légumière, Agriculture, Accumulation biologique, Pollution sol, Pollution eau, Ingestion, Contamination chimique, Zone tropicale, Légumineuse grain

    Mots-clés Pascal anglais : Atomic absorption spectrometry, Daily dose, Chemical analysis, Amaranthus, Amaranthaceae, Dicotyledones, Angiospermae, Spermatophyta, Brassica chinensis, Cruciferae, Lactuca sativa, Compositae, Brassica rapa, Vigna unguiculata, Leguminosae, Cucurbita moschata, Cucurbitaceae, Pollutant behavior, Industrial waste, Cadmium, Copper, Lead, Zinc, River valley, Tanzania, Africa, Heavy metal, Cultivated plant, Pollutant, Vegetable crop, Agriculture, Biological accumulation, Soil pollution, Water pollution, Ingestion, Chemical contamination, Tropical zone, Grain legume

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 99-0454304

    Code Inist : 001D16A04C. Création : 22/03/2000.