Concentrations of heavy metals in urban soils of Talcahuano (Chile): a preliminary study
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Concentrations of Cd, Cr, Ni, Pb, and Zn in the top-(0–10 cm) and sub-surface (10–20 cm) soils of the Talcahuano urban area were measured. The main soil properties (organic matter, CaCO3, pH, particle sizes) were determined for a network of representative sampling sites. The mean Cr, Ni, Pb, and Zn contents in the urban topsoil samples from Talcahuano (37.8, 22.6, 35.2, 333 mg kg−1, respectively) were compared with mean concentrations for other cities around the world. The results revealed higher concentrations of heavy metals in topsoil samples than in sub-surface samples. The samples from IS1, IS2, and IS3, located in the Talcahuano industrial park, had higher Cr, Ni, Pb, and Zn contents than did samples from the other sites. This was probably due to local pollution by industrial (metallurgical) dust, although other diffuse pollution throughout the entire port region (shipyards, metallurgy, the dismantling of old ships), and contributions from the wind from adjacent industrial, storage, and vessel areas clearly played a role. Heavy metals were lowest in the sample taken on school grounds (SG).
KeywordsUrban soils Heavy metals Soil contamination Talcahuano Chile
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- Allisson, L. E., & Moodie, C. D. (1965). Carbonate. In C. A. Black (Ed.), Methods of soil analysis. Part II (pp. 1379–1396). Madison, WI: American Society of Agronomy.Google Scholar
- Alloway, B. J. (1995). Heavy metals in soils. London: Blackie.Google Scholar
- Black, C. A. (Ed.) (1967). Methods of soil analysis. Madison, WI: American Society of Agronomy, Inc.Google Scholar
- CONAMA, Comisión Nacional de Medio Ambiente. (1995). Diagnostico de la Situación Ambiental en la Comuna de Talcahuano. Síntesis.Google Scholar
- De Gregori, I., Fuentes, E., Rojas, M., Pinochet, H., & Potin-Gautier, M. (2003). Monitoring of copper, arsenic and antimony levels in agricultural soils impacte and non-impacted by mining activities, from three regions in Chile. Journal of Environmental Monitoring, 5(2), 287–295.CrossRefGoogle Scholar
- Environmental Protection Agency (EPA) (2003). Ecological soil screening levels for lead. Interim Final, OSWER Directive 9285.7–70, 244 p. Retrieved November 2006, from http://www.epa.gov/ecotox/ecossl/pdf/eco-ssl_lead.pdf.
- Galli, C. (1967). Geología urbana y suelo de fundación de Concepción y Talcahuano, Chile. Universidad de Concepción.Google Scholar
- Hammond, P. B. (1982). Metabolism of lead. In J. J. Chisolm & D. M. O’Hara (Eds.), Lead absorption in children: Management clinical and environment aspects. Baltimore: Urban and Schwartzenberg.Google Scholar
- ISO 11466 (2002). Soil quality – Extraction of trace elements soluble in aqua regia. International Organization for Standardization.Google Scholar
- Kabata-Pendias, A. (2001). Trace elements in soils and plants (2nd edn.). Boca Raton, FL: CRC Press.Google Scholar
- Lux, W. (1986). Long-term heavy metal and as pollution of soils, Hamburg, Germany. Applied Geochemistry, Suppl. 2, 135–143.Google Scholar
- MAPA. (1994). Métodos oficiales de análisis de suelos y aguas (Analytical methods for soils and water). Madrid: Spanish Ministry of Agriculture, Fishing and Food.Google Scholar
- Municipalidad de Talcahuano. (2000). Plan de Desarrollo Comunal (PLADECO-TALCAHUANO).Google Scholar
- Pizarro, I., Gomez, M. M., Cámara, C., Palacios, M. A. (2003). Distribution of arsenic species in environmental samples collected in Northern Chile. International Journal of Environmental Analytical Chemistry, 83(10), 2879–2890.Google Scholar
- Richter, P., Seguel, R., Ahumada, I., Verdugo, R., Narváez, J., & Shibata, Y. (2004). Arsenic speciation in environmental samples of a mining impacted sector of central Chile. Journal of the Chilean Chemical Society 49(4), 333–339.Google Scholar
- Thornton, I. (1991). Metal contamination of soils in urban areas. In P. Bullock & P. J. Gregory (Eds.), Soils in the urban environment (pp. 47–75). Oxford, UK: Blackwell.Google Scholar
- VROM, Ministry of Housing, Spatial Planning and Environment of Netherlands (2000). Circular on target values and intervention values for soil remedation. Departament of Soil Protection.Google Scholar