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Subject:
From:
Dr W Meier-Augenstein <[log in to unmask]>
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Date:
Tue, 3 Feb 2004 07:40:20 -0000
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Hi y'all,


Carolyn Chenery and Tim Heaton at NIGL (Nottingham, UK) use LA-IRMS with
great success to measure 18O/16O ratios e.g. in tooth enamel.


Here are their contact details:

Mrs Carolyn A. Chenery

[log in to unmask]      Tel: 0115 936 3406.


* Dr Tim H E Heaton

[log in to unmask]      Tel: 0115 936 3401.



Cheers,

Wolfram


> -----Original Message-----
> From: Stable Isotope Geochemistry
> [mailto:[log in to unmask]] On Behalf Of Penny Higgins
> Sent: 02 February 2004 14:40
> To: [log in to unmask]
> Subject: Re: HELP!
>
>
> Hi,
>
> I am working on a similar problem right now. I can tell you
> that it is tricky to get oxygen isotope ratios with
> LA-ICP-MS. I think it may eventually be done, but the proper
> ICP equipment does not yet exist (so far as I know).
>
> One technique that has been tried in the past is LA-GC-IRMS.
> Read papers by Zachary Sharp (University of New Mexico) and
> Thure Cerling (University of
> Utah) on this technique. Geochimica et Cosmochimica Acta
> (1996) v.60 n.15 p. 2909-2916 and Palaeogeography,
> Palaeoclimatology, Palaeoecology (1996) v.26 p. 173-186
>
> Another technique is IRM-GC-MS published by Alison Jones,
> Paola Iacumin and Edward Young. Chemical Geology (1999) v.
> 153 p. 241-248.
>
> I hope this helps you.
>
> ~Penny
>
> At 01:32 PM 2/2/2004 +0000, you wrote:
> >Perhaps get in touch with Dr. Hywel Evans (University of
> Plymouth, UK;
> >http://www.science.plym.ac.uk/DEPARTMENTS/Environmental/staff
> /evans_eh/
> >ehevans.htm)
> >- I seem to remember that Plymouth have done laser ablation
> ICP-MS on fish
> >scales in the past .. or he may know a man who can.
> >
> >trevor
> >
> >
> >At 12:42 02/02/2004 +0000, you wrote:
> >>Dear all,
> >>
> >>I am a student in fourht year Zoology and am currently engaged in a
> >>project studying albacore tuna migrations. I am hoping to use laser
> >>ablation to study oxygen isotopes of their dorsal spines. They lay
> >>down incremental layers in these spines every year in the
> same fashion
> >>as a tree. I am hoping to determine water temperatures for
> different
> >>years and thus showing that they are moveing around a great deal.
> >>
> >>Howevr i have not got the first clue when it comes to laser
> ablation,
> >>how it really works, how i would analyse my results, what
> my results
> >>would look like plus a thousand pther unknowns about it.
> >>
> >>I am appealing to anyone who might know of any good
> material out there
> >>i could read that would give me a good start on the subject. The
> >>material i have read to date has been a little too much too
> soon for
> >>me to digest. Anyone out there involved in any studies
> comparable to
> >>mine, i would appreciate any help or criticism you might have to
> >>offer.
> >>
> >>Kind regards,
> >>Tighearnach
> >
> >
> >*************************************************************
> >                    Dr. Pennilyn Higgins
> >  Florida Laboratory for Isotopic and Environmental Research
> >                           "FLIER"
> >
> >Florida Museum of Natural History       Department of Geology
> >University of Florida                   University of Florida
> >Dickinson Hall                                Williamson Hall
> >PO Box 117800                                   PO Box 112120
> >Gainesville FL 32611-7800           Gainesville FL 32611-2120
> >
> >(352) 392-1721 x251 (office)
> >
> >[log in to unmask]                 [log in to unmask]
> >*************************************************************
>

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