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Stable Isotope Geochemistry

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Stable Isotope Geochemistry <[log in to unmask]>
Subject:
Pt rods
From:
David Winter <[log in to unmask]>
Date:
Thu, 14 Sep 2000 08:16:18 PDT
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Stable Isotope Geochemistry <[log in to unmask]>
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At UC Davis we generally have been analyzing hydrogen isotope ratios in waters
by the equilibration method utilizing Pt/graphite rods supplied by Finnigan.

Recently we had the experience of a few rods failing.  Suspiciously, the
waters (from thermal vents) may have had sulfide and/or organics.

Has anyone had this experience?  Is it known if/how the rods can be
reactivated?  Does anybody have a feeling for the lifetime of the rods in
normal useage?

Thanks in advance.

Dave

David Winter
(805)241-7848
(805)241-7858 fax

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