At 12:55 AM 26/05/98 +1000, you wrote:
>Hi all,
>
>I was just wondering if anyone knows anything about using Magnesium
>perchlorate for a water vapour trap in a CO2 extraction line and if it
>causes significant 13C fractionation in the CO2 collected.
>
>Thanks
>
>Ben McNeil
Dear Ben
Magnesium perchlorate (anhidrone) is the (only?) chemist used for water
trap in the Finnigant conflow method (Elemental Analyzer plus IRMS) for CO2
measurements, so it should not cause any fractionation in the samples, but
I have never used it in a normal extraction vacum line.
Regards
Rafael
Dr. Rafael Nuņez Gomez
Dpto. Ciencias de la Tierra y Quimica Ambiental
Estacion Experimental del Zaidin
Consejo Superior de Investigaciones Cientificas
Profesor Albareda 1, 18008 Granada, Spain
Tf 34-958-121011 Fax 34-958-129600
email: [log in to unmask]http://www.eez.csic.es/~isotopos
