Methanesulphonic acid loss during ice-core storage: recommendations based on a new diffusion coefficient

The loss of methanesulphonic acid (MSA) from stored ice cores can be significant over typical storage times, with diffusion to the ice-core surface controlling the loss. Methods for minimizing this loss are discussed and it is shown how measurements can be corrected by calculating the amount of MSA...

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Bibliographic Details
Published in:Journal of Glaciology
Main Authors: Roberts, JL, van Ommen, TD, Curran, MAJ, Vance, TR
Format: Article in Journal/Newspaper
Language:English
Published: Int Glaciol Soc 2009
Subjects:
Earth Sciences
Physical Geography and Environmental Geoscience
Glaciology
ice core
Journal of Glaciology
Online Access:https://doi.org/10.3189/002214309790152474
http://ecite.utas.edu.au/71451
Description
Summary:The loss of methanesulphonic acid (MSA) from stored ice cores can be significant over typical storage times, with diffusion to the ice-core surface controlling the loss. Methods for minimizing this loss are discussed and it is shown how measurements can be corrected by calculating the amount of MSA lost. A revised diffusion coefficient for MSA in solid ice, (4.1 x 10(-13)) +/- (2.5 x 10(-14)) m(2) s(-1), is derived to improve such MSA loss corrections.

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