Heavy metals in coastal water systems. A case study from the northwestern Gulf of Thailand
2006; Elsevier BV; Volume: 64; Issue: 7 Linguagem: Inglês
10.1016/j.chemosphere.2005.11.008
ISSN1879-1298
AutoresP. Censi, Sebastiano Ettore Spoto, Filippo Saiano, Mario Sprovieri, Salvatore Mazzola, G. Nardone, S. I. Di Geronimo, Rosalda Punturo, Dario Ottonello,
Tópico(s)Geochemistry and Geologic Mapping
ResumoA geochemical survey of the northwestern part of the Thailand Gulf (Inner Gulf) was carried out in order to define concentrations and distribution patterns of selected heavy metals (V, Cr, Co, Ni, Cu, Zn, and U) in the coastal system and estuarine area of the Mae Klong river. The results indicate the presence of two different sources of heavy metals in the studied environment and allowed us to identify a lithogenic component that significantly influences the composition of coastal waters and suspended particulate matter (SPM). Comparison of the normalized heavy metals concentrations both in the studied samples and in those reported for the Sn–W ores present in the surrounding areas suggests an important anthropogenic contribution to the chemistry of the seafloor sediments. Vanadium and nickel enrichment factors (EF) calculated for coastal waters indicate that contamination by hydrocarbons discharge took place in the investigated area.
Referência(s)