Stable Isotope Geochemistry


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omurchts <[log in to unmask]>
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Stable Isotope Geochemistry <[log in to unmask]>
Mon, 2 Feb 2004 14:58:27 +0000
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Thank you very much for you rhelp. Do you know if there are any chemicals
in the water of seas that could be used with LA-ICPMS
 to determine water temperatures. Sr maybe? Any help is greatly

Regards, Tighearnach
>===== Original Message From Stable Isotope Geochemistry
<[log in to unmask]> =====
>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
>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
>Utah) on this technique. Geochimica et Cosmochimica Acta (1996) v.60
>p. 2909-2916 and Palaeogeography, Palaeoclimatology, Palaeoecology
>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.
>At 01:32 PM 2/2/2004 +0000, you wrote:
>>Perhaps get in touch with Dr. Hywel Evans (University of Plymouth, UK;
>>- 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.
>>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
>>>incremental layers in these spines every year in the same fashion as
>>>tree. I am hoping to determine water temperatures for different years
>>>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
>>>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,
>>                    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]