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Preliminary data on changes of lead concentrations in Antarctic ice from 155,000 to 26,000 years BP

Boutron, Claude F. and Patterson, Clair C. and Petrov, V. N. and Barkov, N. I. (1987) Preliminary data on changes of lead concentrations in Antarctic ice from 155,000 to 26,000 years BP. Atmospheric Environment, 21 (5). pp. 1197-1202. ISSN 1352-2310. https://resolver.caltech.edu/CaltechAUTHORS:20140813-115443903

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Abstract

Concentrations of lead (Pb) have been measured by ultraclean Isotope Dilution Mass Spectrometry in six sections of the 2083 m Vostok deep Antarctic ice core which integrates some 155,000 years. Lead contamination of 15,000–32,000 pg Pb g^(−1) existed on the outside of the cores, but measured concentrations decreased abruptly along a radius from the outside to the center of the cores, establishing interior values in the 2–40 pg Pb g^(−1) range. These interior data show that natural concentrations of Pb have varied strongly in Antarctic ice during the last 155,000 years: Pb values were high during the end of the ice age (Illinois) which proceeded the last interglacial and during the Last Glacial Maximum; they were low during the last interglacial and most of the last ice age (Wisconsin). Soil dust appears to be the major source of natural Pb, but the volcanic contribution is found to be significant during low Pb time periods.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0004-6981(87)90247-2DOIArticle
http://www.sciencedirect.com/science/article/pii/0004698187902472PublisherArticle
Additional Information:© 1987 Pergamon Journals Ltd. First received 31 July 1986 and received for publication 15 October 1986. We are grateful to C. Lorius for making the Vostok core sections available for this study, to M. Legrand for kindly providing unpublished data, and to D. Settle for laboratory assistance. This work was supported in the U.S.A. by NSF Grant N° DPP 840-3490, in France by the Ministère de I'Environnement, the Expéditions Polaires Francaises and the Terres Australes et Antarctiques Francaises, and in the U.S.S.R. by the Soviet Antarctic Expeditions.
Funders:
Funding AgencyGrant Number
NSFDPP 840-3490
Ministère de l'EnvironnementUNSPECIFIED
Expeditions Polaires FrancaisesUNSPECIFIED
Terre Australe et Antarctiques FrancaisesUNSPECIFIED
Soviet Antarctic ExpeditionsUNSPECIFIED
Subject Keywords:Lead, Antarctica, ice core, troposphere, natural background, aerosol sources, ice age, toxic metals
Issue or Number:5
Record Number:CaltechAUTHORS:20140813-115443903
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140813-115443903
Official Citation:Boutron, C. F., Patterson, C. C., Petrov, V. N., & Barkov, N. I. (1987). Preliminary data on changes of lead concentrations in Antarctic ice from 155,000 to 26,000 years BP. Atmospheric Environment (1967), 21(5), 1197-1202. doi: http://dx.doi.org/10.1016/0004-6981(87)90247-2
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48509
Collection:CaltechAUTHORS
Deposited By: Joanne McCole
Deposited On:14 Aug 2014 21:08
Last Modified:03 Oct 2019 07:04

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