An assessment of heavy metal contamination in surface sediment using statistical analysis
| Autor: | M.D. Coello Oviedo, M. R. Rodríguez-Barroso, J. M. Quiroga Alonso, J.L. García-Morales |
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| Rok vydání: | 2009 |
| Předmět: |
Total organic carbon
Pollution Geologic Sediments Cadmium media_common.quotation_subject chemistry.chemical_element Sediment General Medicine Management Monitoring Policy and Law Soil contamination Mercury (element) Metal chemistry Wastewater Spain Metals Heavy Environmental chemistry visual_art visual_art.visual_art_medium Water Pollutants Chemical General Environmental Science media_common |
| Zdroj: | Environmental Monitoring and Assessment. 163:489-501 |
| ISSN: | 1573-2959 0167-6369 |
| Popis: | The distribution and accumulation of heavy metals in the sediments, especially those nearest of wastewater discharges of south of Spain, were investigated. Sediment samples from 14 locations were collected and characterised for metal content (e.g. Ni, Cu, Zn, Cr, Pb, Mn, Cd and Hg), organic carbon, total nitrogen, total phosphorous, n-hexane-extractable material, carbonates and grain size. Concentration data were processed using correlation analysis and factor analysis. The correlation analysis of concentrations data showed important positive correlations among organic carbon, total phosphorus, Cu, Zn, Cd and Hg, otherwise weak correlations among Mn, Cr, Ni and CO3 2 − , indicating that these metals have complicated geochemical behaviours. The use of statistical factor analysis also confirmed these results. Sediments pollution assessment was carried out using geoaccumulation and metal pollution indexes (MPI8). The results revealed that sediments of Cadiz bay and Sancti Petri channel were uncontaminated with the studied metals. |
| Databáze: | OpenAIRE |
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