On site stripping voltammetric determination of Zn(II), Cd(II) and Pb(II) in water samples of the Cananéia-Iguape Estuarine-Lagoon complex in São Paulo state, Brazil

Journal of the Brazilian Chemical Society

Ana P. R. De Souza²  Elisabete S. Braga¹  Mauro Bertotti² 

[1] ,Universidade de São Paulo Instituto de Química São Paulo SP ,Brazil

关键词: zinc;    cadmium;    lead;    stripping voltammetry;    estuary;   

DOI  :  10.1590/S0103-50532012000700017

来源: SciELO

【 摘 要 】

Estuarine systems play an important role in the retention of toxic trace elements owing to the affinity of these elements with particles dissolved in water. This work presents the use of a voltammetric sensor to monitor heavy metal (Zn (II), Cd(II) and Pb (II)) concentrations in the Cananéia-Iguape Estuarine-Lagoon region (São Paulo State, Brazil). Lower concentrations were found in the Southern estuarine system (Cananéia City) and increased concentrations observed in the Northern sector (Iguape City) were promoted by anthropogenic activities, with particular influence from the historical introduction of mining wastes and inputs from agricultural, industrial and domestic effluents. The proposed method is reliable, inexpensive and fast, can simultaneously provide information on the concentration of these metallic ions and can be easily used for field measurements aboard oceanographic ships.

【 授权许可】

CC BY   
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