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Seasonal variations of heavy metals in central Greenland snow deposited from 1991 to 1995

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Seasonal variations of heavy metals in central Greenland snow deposited from 1991 to 1995

Content Provider	Royal Society of Chemistry (RSC)
Author	Morel, Christine Cozzi, Giulio Boutron, Claude Gaspari, Vania Ferrari, Christophe Barbante, Carlo Jaffrezo, Jean Luc Cescon, Paolo
Copyright Year	2003
Abstract	To better assess the seasonality in the fallout of heavy metals to central Greenland, a continuous series of 68 snow samples has been collected at a remote site in the Summit area from a 2.7 m pit using ultraclean sampling procedures. This covers a continuous four year time period from spring 1991 to spring 1995. Co, Cu, Zn, Mo, Rh, Pd, Ag, Cd, Sb, Pt, Pb, Bi and U were determined using ultrasensitive inductively coupled plasma sector field mass spectrometry under clean room conditions. In addition we also determined Al by graphite furnace atomic absorption spectrometry and Na+, Ca2+, SO42−, MSA and oxalate by ion chromatography, species that will assist in the interpretation of the trace metal data. The data show pronounced inter- and intra-annual variations, with large differences in the amplitude of these variations for the element studied, with few clear seasonality patterns. Generally, high concentrations are observed in the spring snow layers, while much lower concentrations are typical of summer snow layers. Significant correlations are observed between Co, Cu, Zn, Ag and Sb, while Pt, Pd and Rh show no correlation with the other metals. Crustal enrichment factors show that while the crustal dust contribution is probably important for some metals for part of the year (spring), anthropogenic inputs are as important in many instances. Pronounced intra-annual variations are observed for some metals, in particular Pt. The variations observed for this metal parallel fairly closely changes in Russian Pt production, which points to emissions from smelters in the Russian Arctic as likely sources for Pt.
Starting Page	328
Ending Page	335
Page Count	8
File Format	HTM / HTML PDF
ISSN	14640325
Volume Number	5
Issue Number	2
Journal	Journal of Environmental Monitoring
DOI	10.1039/b210460a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Cu MSA Bi Greenland Mo Lead Inductively coupled plasma Mass spectrometry Cleanroom Graphite furnace atomic absorption Ion Chromatography Trace metal Spring Snow Summer Snow Arctic
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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Seasonal variations of heavy metals in central Greenland snow deposited from 1991 to 1995

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Seasonal variations of heavy metals in central Greenland snow deposited from 1991 to 1995