I am looking into building a cryogenic trap that will enable me to collect
SO2 in addition to CO2 and N2.  I am interested in comparing multiple
isotope ratio distributions of freshwater organisms in benthic vs. pelagic
foodwebs.  Does have a variable-temperature trap design they consider
superior to the one described in: Des Marais, D. 1978. Anal. Chem.
50(9)1405-1406? Any other tips/pitfalls regarding working with sulfur would
be greatly appreciated. Thanks, Margaret
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Margaret B. Lansing
U.S. Dept. of Commerce
National Oceanic & Atmospheric Administration
Great Lakes Environmental Research Laboratory
2205 Commonwealth Blvd.
Ann Arbor, MI  48105
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313-741-2289 (lab)
313-741-2210 (office)
313-741-2055 (fax)
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