CADMIUM AND ZINC SOURCE ASSESSMENT IN THE SEPETIBA BAY AND BASIN REGION

被引：54
作者：
BARCELLOS, C
LACERDA, LD
机构：
[1] Departmento de Geoquímica, Instituto de Química, Universidade Federal Fluminense, Niterói, RJ, CEP 24210, Morro do Valonguinho s/n
[2] Departamento de Informações para a Saúde, Fundação Oswaldo Cruz, Rio de Janeiro
来源：
ENVIRONMENTAL MONITORING AND ASSESSMENT | 1994年 / 29卷 / 02期
关键词：
D O I：
10.1007/BF00546874
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Industrial and weathering inputs of Cd and Zn to the Sepetiba Bay and basin were assessed, based on production parameters obtained from local environment and industry authorities, and literature data. The results are compared with similar evaluations from other coastal regions and field data obtained in measuring Zn and Cd transport by rivers, direct run-off and atmospheric deposition in the region. Cadmium and zinc inputs to the bay increased by three orders of magnitude relative to pre-industrial fluxes and presently reach up to 1.6 and 180 tonnes per year for Cd and Zn, respectively, which represents a large input-to-area ratio, and explains the high concentration of these metals previously reported in the estuarine biota and sediments of Sepetiba Bay. Industrial activities, mainly metallurgical and chemical, comprise 94% and 84% of the total Cd and Zn inputs to the Bay. This figure identifies the point sources as being responsible for the environmental contamination and for regional poisoning risks.
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页码：183 / 199
页数：17
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