Keith,

Silver phosphate works very well on an offline preparation
system. You freeze your sample down onto a finger containing the silver
phosphate using liquid nitrogen, wait until everything is completely
frozen and then proceed as normal.

Kim.



>                I am looking for any references you can recommend that
>refer to method(s) for removing H2S from CO2 in an on-line cleanup scenario.
>                One way that suggests itself to me is to pass the gas
>mixture over silver wool; reacting the H2S to Ag2S and forming hydrogen,
>the H2/CO2 mixture can then be cooled with LN2 to freeze out the CO2 for
>collection?
>
-------------------------------------------------------------------
Kim Baublys
Stable Isotope Geochemistry Laboratory
Department of Earth Sciences
University of Queensland  4072
Australia

phone  61 7 33651131
fax    61 7 33651277