Changes in the occurrence of heavy metals in the tropical atmosphere during the past 22,000 years as recorded in Bolivian ice core SCIE SCOPUS

Cited 3 time in WEB OF SCIENCE Cited 3 time in Scopus
Title
Changes in the occurrence of heavy metals in the tropical atmosphere during the past 22,000 years as recorded in Bolivian ice core
Author(s)
Hong, S; Park, JK; Thompson, LG; Boutron, CF; Ferrari, CP; Francou, B; Maurice-Bourgoin, L
Publication Year
2003-05
Abstract
Nine sections from the Sajama ice core recovered from the summit of an extinct Andean volcano in Bolivia were analysed for various heavy metals to assess anthropogenic changes in the tropical upper troposphere over South America. These samples include two sections dating from 14,100 to 19,200 years BP, corresponding to the Last Glacial Stage (LGS), one section dating from 2800 years BP (the late Holocene), and six sections dating from AD 790 to 1988. Our preliminary data, combined with data reported elsewhere, demonstrate that the heavy metal concentrations since the late Holocene are higher than in the period from the LGS to the early Holocene. The enrichment factors calculated by normalizing for crustal abundance using the metal/Al ratio in the mean upper continental crust indicate that a significant input of heavy metals attributed to anthropogenic contributions has occurred since the beginning of the 19th century for Pb and from the last century for Cd, Cu, and Zn.
ISSN
1155-4339
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5516
DOI
10.1051/jp4:20030383
Bibliographic Citation
JOURNAL DE PHYSIQUE IV, v.107, pp.633 - 636, 2003
Publisher
E D P SCIENCES
Type
Article
Language
English
Document Type
Article; Proceedings Paper
Publisher
E D P SCIENCES
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