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Subject: Treatment of samples for PCB/Dioxin analyses.
From: Chris Harrod <[log in to unmask]>
Reply-To:Scientific forum on fish and fisheries <[log in to unmask]>
Date:Thu, 27 Nov 2008 14:44:51 +0000

text/plain (34 lines)


I'm hoping that the Fish-Sci community can give me the benefit of their expertise.

I have been asked to provide some fish samples for subsequent analyses of PCBs and Polychlorinated dibenzodioxins (dioxins).
I had the impression that samples, once taken, should be stored at -80C to prevent loss of labile compounds.
I follow this approach for fatty acid work for example, and it seems to make sense to me for any compounds that are likely to be associated with lipids.

However, one of the labs I have contacted regarding the analyses clearly stated that freezing at -20C was sufficient.

Comments/pointers to literature/procedures etc much appreciated!

All the best from an almost sunny Belfast


><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><> ><
Dr Chris Harrod
Lecturer in Fish and Aquatic Ecology
Queen's University Belfast
School of Biological Sciences
Medical Biology Centre
97 Lisburn Road
Belfast BT9 7BL
[log in to unmask]
Tel: +44 (0) 28 909 72271
Mob: +44 (0) 79 77419314
Lab: +44 (0) 28 909 72106
Fax: +44 (0) 28 909 75877
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