Ad. Hatton et al., DIMETHYLSULFOXIDE AND OTHER BIOGENIC SULFUR-COMPOUNDS IN THE GALAPAGOS PLUME, Deep-sea research. Part 2. Topical studies in oceanography, 45(6), 1998, pp. 1043-1053
Concentrations of biogenic sulphur compounds were measured at a series
of stations inside and outside the high productivity plume to the wes
t of the Galapagos Islands, during the PlumEx study in November 1993.
This is the first field data set generated using a new specific enzyme
technique for the determination of dimethylsulphoxide (DMSO). DMSO in
seawater arises from the photochemical and bacterial oxidation of dim
ethylsulphide (DMS) and is thought to be a key compound in the marine
biogeochemical sulphur cycle. The distribution of DMSO is discussed re
lative to DMS and dimethylsulphoniopropionate (DMSP) levels, together
with data for chlorophyll and hydrography. Clearly elevated concentrat
ions of DMSO, DMSPp and DMS were seen within the high productivity plu
me, and the significance of DMSO in deep waters is discussed. (C) 1998
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