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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:40 |
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Conference: Bucharest University Faculty of Physics 2003 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
The Evaluation of the Quality of the Drinking Spring-Waters in Pitesti Regarding their Total Hardness
Authors:
A.D.Toma
Affiliation:
University of Pitesti, Faculty of Science, Department of Physics adtoma2003@yahoo.com, tsmaranda@yahoo.com
E-mail
Keywords:
Abstract:
The record of physical and chemical properties of the drinking spring-waters is essential to protect people’s health and environment. The purpose of this study is to determine the concentrations of calcium and magnesium ions in the drinking spring-waters located in the town of Pitesti. These evaluations were achieved using the following methods: atomic absortion flame spectral analysis for calcium and magnesium; complexometric analysis with EDTA in the presence of the indicator mixture green-murexid with naftol B for calcium; visual absorbtion spectrophotometric analysis for magnesium. The evaluation of the concentrations of calcium and magnesium ions in the spring-waters located in Pitesti applies in the correct evaluation of their hardness and quality as drinking waters, from this point of view. The evaluation of the hardness of the surface waters is achieved using the complexonometric analysis with EDTA at pH=10 in the presence of the indicator black-eriocrom T. We determined the experimental values of the hardness and of the concentrations of the calcium and magnesium ions for the waters of eight springs in the town of Pitesti. These experimental values were compared to the maximum permitted values for the surface drinking waters, establishing in this way their quality regarding their total hardness.
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