Hello,
For those who are interested we have recently published a paper on the
topic of oxygen pyrolysis with EA-IRMS.
The reference is:
"High precision determination of 18O/16O ratios of silver phosphate by
EA-IRMS continuous flow technique - C. Lιcuyer, F. Fourel, F. Martineau,
R. Amiot, A. Bernard, V. Daux, G. Escarguel and J. Morrison (2007)
Journal of Mass Spectrometry - 42: pp 36-41."
Some of the aspect we describe may be useful for other types of minerals.
Hope this helps,
--
Franηois FOUREL
UMR CNRS 5125 PEPS
Universitι Claude Bernard Lyon 1
2 rue Raphaλl Dubois - Bβt. Gιode
F-69622 VILLEURBANNE Cedex - FRANCE
Tιl : +33 (0) 4 72 44 62 42
FAX : +33 (0) 4 72 43 16 88
Email : [log in to unmask]
Clemente Recio a ιcrit :
> Dear Darren (and others),
>
>
> I would be very much interested in hearing your experience doing mineral
> samples by EA-pyrolysis, particularly your hydrogen set up and results
> (I assume that the O mentioned refers to the hydration oxygen). We
> attempted long ago to use an EuroVector+Isoprime, but got erratic
> results, so I abandoned. But it would certainly be most helpful to be
> able to do at least Hydrogen ...
>
> Thanks,
>
> Clemente
>
>
>
>> Dear Colleagues
>>
>> Looking through the Isogeochem archives there was a discussion back in
>> 2001 on the dD of NBS 30 (see one such message below). We have been
>> analyzing NBS 30 here using our TCEA and the results compared to our
>> other internal and international standards are not very good. Have I
>> missed some vital information around the community about analyzing NBS
>> 30 for dD and d18O using a TCEA? We are getting good results for dD
>> but not for d18O.
>>
>> Thanks
>>
>> Darren
>>
>>> Subject:
>>> Re: delta D of NBS-30
>>> From:
>>> Willi A. Brand
>>> Reply-To:
>>> Stable Isotope Geochemistry <[log in to unmask]>
>>> Date:
>>> Mon, 10 Sep 2001 08:13:51 +0200
>>> Content-Type:
>>> text/plain
>>>
>>> Hi,
>>> a number of years ago, during the early stages of high temperature
>>> pyrolysis developments at Finnigan I ran NBS30 at the 1-5-milligram
>>> level and got astonishing results. I do not recall the exact numbers but
>>> I had two distinct cluster values. My conclusion at the time was that
>>> the material was not homogeneous at the single grain level and I
>>> discontinued using it for the purpose. Has anyone experienced something
>>> similar?
>>> Willi
>>> --
>>>
>>> Willi A. Brand, Stable Isotope Laboratory [log in to unmask]
>>> Max-Planck-Institute for Biogeochemistry
>>> Carl-Zeiss-Promenade 10, 07745 Jena, Germany Tel +49-3641-643718
>>> P.O.Box 100164, 07701 Jena, Germany Fax: +49-3641-643710
>>> http://www.bgc-jena.mpg.de/pages/public/Iso+Gas-Lab/BGC_Gaslab.html
>>> http://www.bgc-jena.mpg.de/pages/public/Iso+Gas-Lab/BGC_Isolab.html
>>>
>>
>>
>>
>> Dr Darren Grocke
>> Associate Professor & Director of SIBL
>>
>> Stable-Isotope Biogeochemistry Laboratory (SIBL)
>> McMaster University
>> School of Geography & Earth Sciences
>> 1280 Main Street West
>> Hamilton, Ontario, L8S 4K1
>> Canada
>>
>> http://www.science.mcmaster.ca/geo/research/sibl/index.html
>> Phone: 905 525 9140 ext. 26334
>> Fax: 905 546 0463
>
>
>
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