National Oceanic and
Atmospheric Administration
United States Department of Commerce


FY 2008

The shipboard analysis of trace levels of sulfur hexafluoride, chlorofluorocarbon-11 and chlorofluorocarbon-12 in seawater

Bullister, J.L., and D.P. Wisegarver

Deep-Sea Res. I, 55, 1063–1074, doi: 10.1016/j.dsr.2008.03.014 (2008)

Methods are described for the rapid (11 min) automated shipboard analysis of dissolved sulfur hexafluoride (SF6) in small volume (~200 cm3) seawater samples. Estimated precision for the SF6 measurements is ~2% or 0.02 fmol kg–1 (whichever is greater). The method also allows for the simultaneous measurement of chlorofluorocarbon-11 (CFC11) and chlorofluorocarbon-12 (CFC12) on the same water sample, with significantly improved sensitivity over previous analytical methods.

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