Source identification and temporal evolution of trace elements in PM 10 collected near to Ny-Ålesund (Norwegian Arctic)

This study investigated the elemental composition of PM10 collected in a polar environment (Ny-Ålesund, Norwegian Arctic), to identify its sources and to understand the effects of short- and long-range transport processes. Natural (crustal and marine) and anthropogenic Arctic PM sources were identif...

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Bibliographic Details
Published in:Atmospheric Environment
Main Authors: Conca E., Abollino O., Giacomino A., Buoso S., Traversi R., Becagli S., Grotti M., Malandrino M.
Format: Article in Journal/Newspaper
Language:English
Published: 2019
Subjects:
Elemental composition
Enrichment factor
Ny-Ålesund (Norwegian Arctic)
PM
10
Principal component analysi
Seasonal trends
Arctic
Ny Ålesund
Ny-Ålesund
Online Access:http://hdl.handle.net/2318/1710307
https://doi.org/10.1016/j.atmosenv.2019.02.001
Description
Summary:This study investigated the elemental composition of PM10 collected in a polar environment (Ny-Ålesund, Norwegian Arctic), to identify its sources and to understand the effects of short- and long-range transport processes. Natural (crustal and marine) and anthropogenic Arctic PM sources were identified, and specific emission sources were recognised by means of Principal Component Analysis and Hierarchical Cluster Analysis: airborne pollution deriving from ship fuels, local vehicle (non-exhaust) and continental emissions (e.g. incinerators or industries) were the main sources of anthropogenic elements. The results obtained so far from samples collected during four successive spring-summer sampling campaigns (2010-2013) show a remarkable seasonal trend for most of the investigated elements. For both geogenic and anthropogenic elements, concentrations are generally higher in March and April, when the ground is almost entirely covered by snow and ice, suggesting that long-range transport processes might be taking place. On the other hand, the concentrations of anthropogenic metals related to ship emissions (i.e. Co, Ni and V) peak in late spring and summer, when the marine traffic in the fjord is generally higher. For most of the analytes, the four campaigns were not significantly different; therefore, in the studied period, the composition of PM10 in Ny-Ålesund did not vary remarkably. Finally, the behaviour of Rare Earth Elements was discussed in terms of parent material mineralogy.

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