Evaluation of the chemical composition of the Guarapiranga water system: case study (2002 and 2003)

Quimica nova

Richter, Eduardo M.¹  Angnes, Lúcio²  Lago, Claudimir L. do²  Fornaro, Adalgiza² 

[1] Universidade Federal de Uberlândia, Uberlândia, Brasil;Universidade de São Paulo, São Paulo, Brasil

关键词: drinking water;    water contamination;    heavy metals.;   

DOI  :  10.1590/S0100-40422007000500018

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The supply of drinking water in the MetropolitanArea of São Paulo City has been a great and serious challenge in thelatest years. This work demonstrates the viability of the evaluation of thedegree of contamination of the water reservoirs using analytical procedures,which allow the analysis of several compounds at relatively low cost: strippingsquare wave voltammetry (SSWV) and capillary zone electrophoresis with contactlessconductivity detection (CZE-CCD). The results of ionic composition indicatedsignificant contamination of the Guarapiranga water system by human activitieson the reservoir banks. In fact, the Guavirutuba and Itupu streams presentedhigh concentrations of phosphate and ammonium ions. This can be directly relatedto misuse and unruled occupation of the soil and precarious sanitary infrastructure.

【 授权许可】

CC BY