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Stable Isotope Geochemistry

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Subject:
From:
"Thomas L. Millican" <[log in to unmask]>
Reply To:
Stable Isotope Geochemistry <[log in to unmask]>
Date:
Mon, 22 May 2006 01:17:21 -0500
Content-Type:
text/plain
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text/plain (33 lines)
Tao,
Comparisons are typically made for isotopes of the same atoms. If you know how enriched (N) your samples are expected to be, someone may know of a source for a comparable N reference gas/material, allowing you to save your Ar for leak-detection. :-)
Best Wishes,
-Tom



----- Original Message -----
From: Tao Fang <[log in to unmask]>
Date: Monday, May 22, 2006 0:45 am
Subject: [ISOGEOCHEM] question on N2:Ar measurement

> Dear All:
> 
> I have a question on N2:Ar ratio measurement. Is it
> possible to measure enriched N2 isotope (mass 29 and
> 30) by comparing with Ar peak? Whether all dual inlet
> mass spectrometer can measure mass ratio of 29/40 and
> 30/40, just like 28/29 and 28/30? or any special
> modification is necessary?
> 
> Any suggestion is welcomed!
> 
> Best regards
> 
> Tao
> 
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