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Abstract
Occurrence of trace elements in soil can be attributed to natural sources or be induced by anthropogenic activities or through a combined effect. Trace elements compounds are used by the metallurgical and chemical industry. Thus agriculture contributes significantly to elements pollution. Artificial fertilizer as well as many herbicides, fungicides, and insecticides contain pollutant elements. This study examined pesticides in relation to trace elements (arsenic, mercury, chromium and lead) concentration.
Acknowledgments
Financial support from FAPESP (grant 97/07129-4) has made this work possible. The author is grateful to Chemistry Nilton Pereira Alves (Quimlab Laboratory) for his assistance in the project.