Título:	Assessment of heavy metals in soils of a vineyard region with the use of principal component analysis.
Autor:	VALLADARES, G. S. CAMARGO, O. A. de CARVALHO, J. R. P. de SILVA, A. M. C.
Afiliación:	GUSTAVO SOUZA VALLADARES, UFC/CCA; OTÁVIO ANTÔNIO DE CAMARGO, IAC; JOSÉ RUY PORTO DE CARVALHO, CNPTIA; ALESSANDRA MARIA CIA SILVA, PUC-Campinas.
Año:	2009
Referencia:	Scientia Agricola, Piracicaba, v. 66, n. 3, p. 361-367, May/June 2009.
Descripción:	Agricultural management with chemicals may contaminate the soil with heavy metals. The objective of this study was to apply Principal Component Analysis and geoprocessing techniques to identify the origin of the metals Cu, Fe, Mn, Zn, Ni, Pb, Cr and Cd as potential contaminants of agricultural soils. The study was developed in an area of vineyard cultivation in the State of São Paulo, Brazil. Soil samples were collected and GPS located under different uses and coverings. The metal concentrations in the soils were determined using the DTPA method. The Cu and Zn content was considered high in most of the samples, and was larger in the areas cultivated with vineyards that had been under the application of fungicides for several decades. The concentrations of Cu and Zn were correlated. The geoprocessing techniques and the Principal Component Analysis confirmed the enrichment of the soil with Cu and Zn because of the use and management of the vineyards with chemicals in the preceding decades.
Thesagro:	Cobre Zinco Poluição do Solo
NAL Thesaurus:	Principal component analysis Geographic information systems Soil pollution Copper Zinc
Palabras clave:	Análise de componentes principais
DOI:	http://dx.doi.org/10.1590/S0103-90162009000300011
Tipo de Material:	Artigo de periódico
Acceso:	openAccess
Aparece en las colecciones:	Artigo em periódico indexado (CNPTIA)