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Stable Isotope Geochemistry <[log in to unmask]>

Subject:

drift

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Hagen <[log in to unmask]>

Date:

Tue, 11 May 1999 13:41:06 +-200

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Stable Isotope Geochemistry <[log in to unmask]>

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Hi everybody,
I need some information about the drift (and drift corrections) of con-flow mass specs. We measure O2 and observe a drift in 17O values up to 10 permil and in 18O up to 3.5 permil during a day. The values get steadily lighter. Is this the normal range? How can it be corrected?
Any information will be helpful.
thanks in advance
Bettina

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