Journal
QUIMICA NOVA
Volume 29, Issue 1, Pages 61-65Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0100-40422006000100013
Keywords
sugar cane cultivation; heavy metals; organochlorinated compounds
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Sugar cane cultivation in the State of Sao Paulo has expanded in the last years, with an annual production of 200(.)10(6) t in an area of 2.5(.)10(6) hectares. The use of herbicides, pesticides and fertilizers in sugar cane plantations, together with deforestation of riparian vegetation. have caused impacts on the hydric resources of the adjacent areas. The aim of this work is to evaluate the influence of sugar cane plantations on streams in the central region of the State of Sao Paulo, studying 16 organochlorinated compounds and 7 metals (Cu, Fe, Cd, Zn, Mn, Cr and Ni) found in the sediments of 11 streams. The results show that there is a higher concentration of metals and organochlorinated compounds in streams without riparian vegetation when compared to forested areas.
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