Repositorio UFRO · Omeka S

Evaluating natural and anthropogenic inputs on the distribution of potentially toxic elements in urban soil of Valdivia, Chile

Primer Autor	Vera, Francisca
Co-autores	Tardani, Daniele Alvarez-Amado, Fernanda Tolorza, Violeta Lacassie, Juan Pablo Jullian, Domingo Sepulveda, Carolina Sanchez-Alfaro, Pablo Daniele, Linda Gutierrez, Leopoldo
Título	Evaluating natural and anthropogenic inputs on the distribution of potentially toxic elements in urban soil of Valdivia, Chile
Editorial	SPRINGER
Revista	ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
Lenguaje	en
Resumen	The increasing population in urban areas in the last decades requires an effort to understand the geochemistry of contaminant elements in urban soil. Topsoil plays a crucial role in the exposure of Potentially Toxic Elements (PTEs) to humans through ingestion, dermal contact, and inhalation. In Chile, the last census revealed that 88.6% of people live in cities or towns and only 11.4% in rural areas. This study presents the first systematic geochemical survey of urban soil in the city of Valdivia, in the South of Chile. Topsoil samples (0-10 cm depth) were collected in less disturbed locations within the city at 130 sampling sites using a grid of 0.25 km(2) squares covering a total area of approximately 30 km(2). The concentrations of Al, Fe, Na, Ca, Mg, K, Ti, Be, V, Cr, Mn, Co, Ni, Cu, Zn, As, Mo, Sn, Cd, Se, Pb and Hg were measured. The results showed that high concentrations of Cu, V, Zn and Pb are located mainly in the city's northern area and exceed international soil quality legislation for agricultural use. Data processing comprised plotting of individual spatial distribution maps and the use of a combination of multivariate statistical methods. Hierarchical cluster analysis and principal component analysis identified three element associations. The two element groups V-Al-Ti-Fe-Cr-Co-Mn-Be-Ni and Ca-Na-K-As-Mg are interpreted as a dominant lithological origin related to the most pristine soil conditions in less populated areas. By contrast, the Sn-Pb-Zn-Mo-(Cu-Hg) association presents a significant correlation with urbanization indicators, including vehicular traffic and industrial activities developed since the end of the nineteenth century in Valdivia.
Fecha Publicación	2023
Tipo de Recurso	artículo original
doi	10.1007/s10653-023-01687-5
Formato Recurso	PDF
Palabras Claves	Quality control Cluster analysis Principal components Factor scores maps Health risk assessment Vehicular traffic
Ubicación del archivo	http://dx.doi.org/10.1007/s10653-023-01687-5
Categoría OCDE	Ingeniería Ciencias Ambientales y Ecología Salud Pública, Ambiental y Ocupacional Recursos Hídricos
Materias	Control de calidad Análisis de conglomerados Componentes principales Mapas de puntuaciones factoriales Evaluación de riesgos para la salud Tráfico de vehículos
Página de inicio (Recomendado-único)	7841.0
Página final (Recomendado-único)	7859
Identificador del recurso (Mandatado-único)	artículo original
Versión del recurso (Recomendado-único)	versión publicada
Derechos de acceso	acceso abierto
Access Rights	acceso abierto
Id de Web of Science	WOS:001035499700001
ISSN	0269-4042
Tipo de ruta	verde# hibrida
Categoría WOS	Ingeniería Ciencias Ambientales y Ecología Salud Pública, Ambiental y Ocupacional Recursos Hídricos
Referencia del Financiador (Mandatado si es aplicable-repetible)	ANID-FONDECYT 1201219 ANID-FONDECYT 11220777 ANID-FONDECYT 11190864 ANID-FONDAP 15130015 UFRO VRIP20P001 ANID FONDECYT 1201219 ANID FONDECYT 11220777 ANID FONDECYT 11190864 ANID FONDAP 15130015