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Sci Rep

Title:		Contaminant emissions as indicators of chemical elements in the snow along a latitudinal gradient in southern Andes
Author(s):		Pizarro J; Vergara PM; Cerda S; Cordero RR; Castillo X; Rowe PM; Casassa G; Carrasco J; Damiani A; Llanillo PJ; Lambert F; Rondanelli R; Huneeus N; Fernandoy F; Alfonso J; Neshyba S;
Address:		"Universidad de Santiago de Chile (USACH), Santiago, Chile. jaime.pizarro@usach.cl. Universidad de Santiago de Chile (USACH), Santiago, Chile. NorthWest Research Associates, Redmond, WA, USA. Universidad de Magallanes, Punta Arenas, Chile. Center for Environmental Remote Sensing, Chiba University, Chiba, Japan. Department of Physical Geography, Pontificia Universidad Catolica de Chile, Santiago, Chile. Universidad de Chile, Blanco Encalada 2002, Santiago, Chile. Center for Climate and Resilience Research CR2, Blanco Encalada 2002, Santiago, Chile. Universidad Nacional Andres Bello, Vina del Mar 2531015, Valparaiso, Chile. Instituto Venezolano de Investigaciones Cientificas (IVIC), Carretera Panamericana, Km 11, Altos de Pipe, Venezuela. Department of Chemistry, University of Puget Sound, Tacoma, WA, USA"
Journal Title:		Sci Rep
Year:		2021
Volume:		20210715
Issue:		1
Page Number:		14530 -
DOI:		10.1038/s41598-021-93895-1
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"The chemical composition of snow provides insights on atmospheric transport of anthropogenic contaminants at different spatial scales. In this study, we assess how human activities influence the concentration of elements in the Andean mountain snow along a latitudinal transect throughout Chile. The concentration of seven elements (Al, Cu, Fe, Li, Mg, Mn and Zn) was associated to gaseous and particulate contaminants emitted at different spatial scales. Our results indicate carbon monoxide (CO) averaged at 20 km and nitrogen oxide (NOx) at 40 km as the main indicators of the chemical elements analyzed. CO was found to be a significant predictor of most element concentrations while concentrations of Cu, Mn, Mg and Zn were positively associated to emissions of NOx. Emission of 2.5 mum and 10 mum particulate matter averaged at different spatial scales was positively associated to concentration of Li. Finally, the concentration of Zn was positively associated to volatile organic compounds (VOC) averaged at 40 km around sampling sites. The association between air contaminants and chemical composition of snow suggests that regions with intensive anthropogenic pollution face reduced quality of freshwater originated from glacier and snow melting"
Keywords:
Notes:		"PubMed-not-MEDLINEPizarro, Jaime Vergara, Pablo M Cerda, Sergio Cordero, Raul R Castillo, Ximena Rowe, Penny M Casassa, Gino Carrasco, Jorge Damiani, Alessandro Llanillo, Pedro J Lambert, Fabrice Rondanelli, Roberto Huneeus, Nicolas Fernandoy, Francisco Alfonso, Juan Neshyba, Steven eng Research Support, Non-U.S. Gov't England 2021/07/17 Sci Rep. 2021 Jul 15; 11(1):14530. doi: 10.1038/s41598-021-93895-1"