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Subject:
From:
Pier de Groot <[log in to unmask]>
Reply To:
Stable Isotope Geochemistry <[log in to unmask]>
Date:
Mon, 22 Nov 2004 11:23:03 +0100
Content-Type:
text/plain
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Dear David,

There is also a chapter on isotope dilution, including an introduction and
equations for calculation in my book Volume-I, which is just published.
The reference is:
Berglund, M. (2004) Introduction to isotope dilution mass spectrometry
(IDMS). In: Handbook of stable isotope analytical techniques. De Groot, P.A.
(ed.). Volume-I. Elsevier: 820-834.

Hope this may be helpful, if you did not found a solution to your problem
already.
Best wishes,

Pier.
****************************************************************
Delta Isotopes Consultancy

Dr. Pier A. de Groot
Pastoor Moorkensstraat 16
2400 Mol - Achterbos
Belgium
Tel. +32 (0)14 326 205
e-mail: [log in to unmask]

Visit my WEB-site about my ³Handbook of Stable Isotope Analytical
Techniques², including pdf files of an order form and a flyer for
downloading, at:
http://users.pandora.be/handbook/index.html
last update: October 1, 2004
Volume I is now available. Volume II is expected to be available medio 2005.
****************************************************************




> Dear List,
>
> I ran across a formula on the internet,
> ( http://wwwrcamnl.wr.usgs.gov/isoig/isopubs/itchch2.html ) sec 2.5.4, that I
> am having trouble understanding.  The equation is suppose to calculate the
> final isotopic compostion when you mix two solutions of known concentration
> and isotopic concentration together.  There is a term F which is equal to
> R/(1+R), R being the ratio of isotopes of interest.  I'm not sure how F is
> related to delta or at%.
> I've calculated the final isotopic concentration to my own satisfaction but it
> bothers me that I can't get the same answer using this equation.  Thanks for
> any insight into this problem.
>
> David DenHaan
> NSTL
>

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