One of the most thorough reports on collection of water samples 
for dissolved sulfide and sulfate is

Carmody, R., 1997, Methods for collection of dissolved sulfate and 
sulfide and analysis of their sulfur isotopic composition.  
U.S. Geological Survey Open-File Report 97-234, 91 pp.

I have a limited number of copies.

Tyler Coplen



>Dear all,
>
>We're working down in the depths of S. Africa's deepest gold mines looking
>for bacteria.  While we were down there a drilling crew penetrated a
>subsurface water compartment (natural) which blew the drill rods out of the
>hole and started flooding that level (at 2.5 kilometers below the surface).
>We managed to get in to collect water samples after the flow rate had
>diminished.  The water fairly stinks of sulfide and we would like to
>preserve or prepare a sample for sulfur isotope analyses of the sulfide.
>The water was pretty alkaline (pH 9) and warm (50°C). We have an anaerobic
>glove bag on site and some limited filtration capability.  Could anyone
>suggest the best way of preserving the sample for sulfur isotope analyses
>of the sulfide and sulfate species and also oxygen isotope analyses of the
>sulfate?  Your advice would be greatly appreciated.  Thanks, TCO
>
>T.C. Onstott
>Dept. of Geosciences
>Princeton University, Princeton NJ 08544
>Ph: 609-258-1622
>FX: 609-258-1274
>e-mail: [log in to unmask]
>Check out our website at http:///geo.princeton.edu/geomicrobio
>