Atmospheric heavy metals in tropical South America during the past 22000 years recorded in a high altitude ice core from Sajama, Bolivia SCIE SCOPUS

Cited 41 time in WEB OF SCIENCE Cited 0 time in Scopus
Title
Atmospheric heavy metals in tropical South America during the past 22000 years recorded in a high altitude ice core from Sajama, Bolivia
Author(s)
Hong, SM; Barbante, C; Boutron, C; Gabrielli, P; Gaspari, V; Cescon, P; Thompson, L; Ferrari, C; Francou, B; Maurice-Bourgoin, L
Publication Year
2004
Abstract
V, Co, Cu, Zn, As, Rb, Sr, Ag, Cd, Ba, Pb, Bi and U have been analysed by inductively coupled plasma sector field mass spectrometry in various sections of a dated snow/ice core drilled at an altitude of 6542 m on the Sajama ice cap in Bolivia. The analysed sections were dated from the Last Glacial Stage (similar to22 000 years ago), the Mid-Holocene and the last centuries. The observed variations of crustal enrichment factors (EF(c)) for the various metals show contrasting situations. For V, Co, Rb, Sr and U, EF(c) values close to unity are observed for all sections, then showing that these elements are mainly derived from rock and soil dust. For the other metals, clear time trends are observed, with a pronounced increase of EF(c) values during the 19th and 20th centuries. This increase shows evidence of metal pollution associated with human activity in South America. For Pb an important contribution was from gasoline additives. For metals such as Cu, Zn, Ag and Cd an important contribution was from metal production activities, with a continuous increase of production during the 20th century in countries such as Peru, Chile and Bolivia.
ISSN
1464-0325
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5362
DOI
10.1039/b314251e
Bibliographic Citation
JOURNAL OF ENVIRONMENTAL MONITORING, v.6, no.4, pp.322 - 326, 2004
Publisher
ROYAL SOC CHEMISTRY
Type
Article
Language
English
Document Type
Article
Publisher
ROYAL SOC CHEMISTRY
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