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Brief communication: organochlorine pesticides in an archived firn core from Law Dome, East Antarctica

Citation

Bigot, M and Curran, MAJ and Moy, AD and Muir, DCG and Hawker, DW and Cropp, R and Teixeira, CF and Bengtson Nash, SM, Brief communication: organochlorine pesticides in an archived firn core from Law Dome, East Antarctica, Cryosphere, 10 pp. 2533-2539. ISSN 1994-0416 (2016) [Refereed Article]


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Copyright 2016 The Authors Licensed under Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode

DOI: doi:10.5194/tc-10-2533-2016

Abstract

Organochlorine pesticides (OCPs) were, for the first time, quantified in archived firn cores from East Antarctica representative of 19451957 and 19581967 (current era, C.E.). The core sections were melted under high-purity nitrogen atmosphere, and the meltwater was analysed. Methods allowed quantification of hexachlorocyclohexanes, heptachlor, trans-chlordane, dieldrin and endrin. While the core presented evidence of nominal contamination by modern-use chemicals, indicating handling and/or storage contamination, legacy OCP concentrations and deposition rates reported are orders of magnitude lower than those from Arctic regions, lending support for their validity. The study further provides a description of equipment used and suggests methods to overcome logistical challenges associated with trace organic contaminant detection in polar regions.

Item Details

Item Type:Refereed Article
Keywords:organochlorine pesticides, OCPs, ice cores, Law Dome, trace organic contaminants
Research Division:Earth Sciences
Research Group:Atmospheric Sciences
Research Field:Climate Change Processes
Objective Division:Environment
Objective Group:Climate and Climate Change
Objective Field:Climate and Climate Change not elsewhere classified
Author:Curran, MAJ (Dr Mark Curran)
Author:Moy, AD (Dr Andrew Moy)
ID Code:112484
Year Published:2016
Web of Science® Times Cited:4
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2016-11-14
Last Modified:2017-10-30
Downloads:76 View Download Statistics

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