DETERMINATION OF MINING ACTIVITY OF RIVER SEDIMENTS OF THREE CHILEAN BASINS BY PARTICLE INDUCED X-RAY EMISSION (PIXE)

Mining is one of the most important industrial activities in Chile and there is growing concern on pollution by some mining and metallurgical processes. We have studied the contents of heavy metals in sediments from three river basins in Chile. Samples were collected based on hydrologic criteria in...

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Autores principales:	COPAJA,S. V, DÍAZ,G, TORO,R, TESSADA,R, MIRANDA,P, MORALES,J. R
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2012
Materias:	River sediments heavy elements PIXE enrichment factors
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000400014
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spelling	oai:scielo:S0717-970720120004000142013-04-04DETERMINATION OF MINING ACTIVITY OF RIVER SEDIMENTS OF THREE CHILEAN BASINS BY PARTICLE INDUCED X-RAY EMISSION (PIXE)COPAJA,S. VDÍAZ,GTORO,RTESSADA,RMIRANDA,PMORALES,J. R River sediments heavy elements PIXE enrichment factors Mining is one of the most important industrial activities in Chile and there is growing concern on pollution by some mining and metallurgical processes. We have studied the contents of heavy metals in sediments from three river basins in Chile. Samples were collected based on hydrologic criteria in six sites along the rivers in their path from the Andes to the Pacific Ocean. Particle induced X-ray emission (PIXE), was used to determine elemental concentrations, and enrichment factors were used to evaluate the significance of anthropogenic sources. The results indicate the presence of Si, Al and Fe as major components. Cu, Cr, Mn, Pb and Zn are the main trace elements. In the Aconcagua river basin, which has less mining activity, the elemental concentrations are within the range of normal crust. Instead, samples from Choapa and Cachapoal river basins present high enrichment factors, mainly in copper. This is consistent with the fact that copper mines operate in the area. A correlation of the values obtained to copper using ICP and PIXE technique was statistically acceptable. Therefore, determination of Cu in river sediment by PIXE allows identification of areas affected by mining activities in river basins of northern Chile.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.57 n.4 20122012-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000400014en10.4067/S0717-97072012000400014
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	River sediments heavy elements PIXE enrichment factors
spellingShingle	River sediments heavy elements PIXE enrichment factors COPAJA,S. V DÍAZ,G TORO,R TESSADA,R MIRANDA,P MORALES,J. R DETERMINATION OF MINING ACTIVITY OF RIVER SEDIMENTS OF THREE CHILEAN BASINS BY PARTICLE INDUCED X-RAY EMISSION (PIXE)
description	Mining is one of the most important industrial activities in Chile and there is growing concern on pollution by some mining and metallurgical processes. We have studied the contents of heavy metals in sediments from three river basins in Chile. Samples were collected based on hydrologic criteria in six sites along the rivers in their path from the Andes to the Pacific Ocean. Particle induced X-ray emission (PIXE), was used to determine elemental concentrations, and enrichment factors were used to evaluate the significance of anthropogenic sources. The results indicate the presence of Si, Al and Fe as major components. Cu, Cr, Mn, Pb and Zn are the main trace elements. In the Aconcagua river basin, which has less mining activity, the elemental concentrations are within the range of normal crust. Instead, samples from Choapa and Cachapoal river basins present high enrichment factors, mainly in copper. This is consistent with the fact that copper mines operate in the area. A correlation of the values obtained to copper using ICP and PIXE technique was statistically acceptable. Therefore, determination of Cu in river sediment by PIXE allows identification of areas affected by mining activities in river basins of northern Chile.
author	COPAJA,S. V DÍAZ,G TORO,R TESSADA,R MIRANDA,P MORALES,J. R
author_facet	COPAJA,S. V DÍAZ,G TORO,R TESSADA,R MIRANDA,P MORALES,J. R
author_sort	COPAJA,S. V
title	DETERMINATION OF MINING ACTIVITY OF RIVER SEDIMENTS OF THREE CHILEAN BASINS BY PARTICLE INDUCED X-RAY EMISSION (PIXE)
title_short	DETERMINATION OF MINING ACTIVITY OF RIVER SEDIMENTS OF THREE CHILEAN BASINS BY PARTICLE INDUCED X-RAY EMISSION (PIXE)
title_full	DETERMINATION OF MINING ACTIVITY OF RIVER SEDIMENTS OF THREE CHILEAN BASINS BY PARTICLE INDUCED X-RAY EMISSION (PIXE)
title_fullStr	DETERMINATION OF MINING ACTIVITY OF RIVER SEDIMENTS OF THREE CHILEAN BASINS BY PARTICLE INDUCED X-RAY EMISSION (PIXE)
title_full_unstemmed	DETERMINATION OF MINING ACTIVITY OF RIVER SEDIMENTS OF THREE CHILEAN BASINS BY PARTICLE INDUCED X-RAY EMISSION (PIXE)
title_sort	determination of mining activity of river sediments of three chilean basins by particle induced x-ray emission (pixe)
publisher	Sociedad Chilena de Química
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072012000400014
work_keys_str_mv	AT copajasv determinationofminingactivityofriversedimentsofthreechileanbasinsbyparticleinducedxrayemissionpixe AT diazg determinationofminingactivityofriversedimentsofthreechileanbasinsbyparticleinducedxrayemissionpixe AT toror determinationofminingactivityofriversedimentsofthreechileanbasinsbyparticleinducedxrayemissionpixe AT tessadar determinationofminingactivityofriversedimentsofthreechileanbasinsbyparticleinducedxrayemissionpixe AT mirandap determinationofminingactivityofriversedimentsofthreechileanbasinsbyparticleinducedxrayemissionpixe AT moralesjr determinationofminingactivityofriversedimentsofthreechileanbasinsbyparticleinducedxrayemissionpixe
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DETERMINATION OF MINING ACTIVITY OF RIVER SEDIMENTS OF THREE CHILEAN BASINS BY PARTICLE INDUCED X-RAY EMISSION (PIXE)

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