SPECIATION OF HEAVY METALS IN SURFACE WATERS POLLUTED BY ANTHROPOGENIC ACTIVITIES

In this work we present the results of a methodological research on the chemical speciation of heavy metals found in surface waters of an area polluted by mining activities (in the Western Carpathians). The surface water samples were collected in two seasons (summer and fall). Each time were perform...

Full description

Saved in:
Bibliographic Details
Published inScientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry Vol. 11; no. 4; pp. 439 - 448
Main Authors Birsan, E, Luca, C
Format Journal Article
LanguageEnglish
Published Alma Mater Publishing House "Vasile Alecsandri" University of Bacau 01.01.2010
Subjects
heavy metals
mining activities
Pourbaix type diagram
speciation
Online AccessGet full text

Cover

More Information
Summary:In this work we present the results of a methodological research on the chemical speciation of heavy metals found in surface waters of an area polluted by mining activities (in the Western Carpathians). The surface water samples were collected in two seasons (summer and fall). Each time were performed in situ physical-chemical measurements (pH, Eh, conductivity, temperature) and analytical determination of total concentrations of some metals (manganese, copper, zinc, iron, cadmium) and anions (SO super(2) sub(4) super(-), C1 super(-), PO super(3) sub(4) NO super(-) sub(3)). Analyze of chemical speciation of these metals was made using the PHREEQC program which allowed us to determine the distribution of studied elements. The concordance of the results obtained with this program with thermodynamic predictions arising from potential - pH equilibrium diagrams - Pourbaix type justify the compatibility between the program calculation and experimental data.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1582-540X