Dear All,
I would like to sample atmospheric water vapor.  The studies that I have
run across which have done this, have pumped air through a cold trap to
freeze the water out.  To make this process easier to set up in the field,
I would prefer to trap the water at ambient temperature.  Does anyone know
of a way to trap the water on a desiccant that does not cause isotopic
fractionation when the water is later released (presumably by heating) for
hydrogen and oxygen isotopic analysis.
Thanks,
Andy

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Dr. Andrew R. Campbell                       *
Professor of Geology                         *
Dept. of Earth and Environmental Science     *
New Mexico Tech                              *
Socorro NM 87801                             *
Phone: 505-835-5327                          *
Fax:   505-835-6436                          *
e-mail: [log in to unmask]            *
www.ees.nmt.edu                              *
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