Dear Tanaka Noriyuki:

Dr. Pieter Grootes, formerly of the University of Washington Quaternary 
Isotope Laboratory in Seattle, Washington, and now at the University 
of  Kiel in Germany, developed a method of water vapor collection in polar 
regions.  Basically the air was pumped through a -90 degree C cold trap 
in the field, with nearly 100% water collection.  If you contact him, he 
could give you the details.  You could get his email address from Travis 
Saling at the Univ. of Washington ([log in to unmask]).

Good Luck,
Christine Massey
University of Vermont
[log in to unmask]


   

On Sat, 6 Apr 1996, Tanaka Noriyuki wrote:

> Dear all:
> 
> 	I would like to make a water vapor collector for isotopic
> analysis in air. I would like to use it in Russia and Northern Japan during
> winter season. The temparature of ground air of this season could be
> as low as -25 degree C. Is someone have a device to collect as much as
> 5 cc of water from air without considerable isotopic fractionation?
> With that amount, we can analyse D, 18O and T contents.  I
> will appreciate any advice from you regarding this. Thanks
> 
> Nori Tanaka
> Graduate School of Environmental Earth Science
> Hokkaido University
> Sapporo Japan
>