Volatile sulphur compounds,

I. Hargittai, The Structure of Volatile Sulphur Compounds, Reidel, Dordrecht, 1985. 

Coil JM, Tonzetich J. 1992. Characterization of volatile sulphur compounds production at individual gingival crevicular sites in humans. J Clin Dent 3 97-103. 

Tonzetich J, Carpenter PAW. 1971. Production of volatile sulphur compounds from cysteine, cystine and methionine by human dental plaque. Arch Oral Biol 16 599-607. 

NP NPEC OC OP OPEC PCB PCDBT PCDD PCDF PCP PFB RA TCA TCDD TCF TCMTB TOC VSC VOC Nonylphenol Nonylphenol ethoxycarboxylate Organo chlorine Octylphenol Octylphenol ethoxycarboxylate Polychloroinated biphenyls Polychlorinated dibenzothiophene Polychlorin ated dib enzo-p - dioxins Polychlorinated dibenzo-p-furans Pentachlorophenol Pentafluorobenzyl Resin acids 2,4,6-Trichloroanisole Tetrachloro dibenzo dioxin Totally chlorine- free 2-(Thiocyanomethylthio)-benzothiazole Total organic carbon Volatile sulphur compounds Volatile organic compounds... 

A recent report (6) recommended the use of Tenax/molecular sieve for the collection of volatile sulphur compounds. This technique has been applied to head space volatiles from pig slurry using a packed column (Supelpak S) and a Tracor flame photometric sulphur... 

Many less electropositive metals known as chalcophiles are found commonly as sulphide minerals some important examples are pyrites (FeS2), sphalerite (zinc blende, ZnS), molybdenite (MoS2), cinnabar (HgS) and galena (PbS). Volatile sulphur compounds such as H2S and organic compounds are also found... 

Abstract Seawater concentrations of the climatecooling, volatile sulphur compound dimethylsulphide (DMS) are the result of numerous production and consumption processes within the marine ecosystem. Due to this complex nature, it is difficult to predict temporal and geographical distribution patterns of DMS concentrations and the inclusion of DMS into global ocean climate models has only been attempted recently. Comparisons between individual model predictions, and ground-truthing exercises revealed that information on the functional... 

Pripis-Nicolau, L., de Revel, G., Bertrand, A., Lonvaud-Eunel, A. (2004). Methionine catabolism and production of volatile sulphur compounds by Oenococcus oeni. J. Appl. Microbiol., 96,... 

Moreira, N., Mendes, F, Pereira, O., Guedes de Pinho, P, Hogg, X, Vasconcelos, I. (2002) Volatile sulphur compounds in wines related to yeast metabolism and nitrogen composition of grape musts. Analytica ChimicaActa, 458, 157-167. 

Yaegaki, K. Sanada, K. Volatile sulphur compounds in mouth air from clinically healthy subjects and patients with periodontal. Disease. J. Periodontal. Res. 1992, 27, 233-238. 

In summary, the sulphur gases most likely to be related to sulphide mineralisation in the natural environment are CS2, COS, H2S and (CHj)2S. Many chemical reactions can occur between the time a sulphur compound (volatile or non-volatile) leaves a deposit and the time a volatile sulphur compound appears near the ground surface above the deposit. Bacterial action probably plays a large role in the formation of sulphur gases as they react with minerals in the deposit, with bedrock, with groundwater and with soil en route to the surface. Therefore, while gaseous sulphur compounds over or peripheral to sulphide mineralisation may be related to the mineralisation, the compounds may or may not have originated directly from the mineralisation. 

Sulphur-gas geochemistry is not, ideally, a "stand alone" technique. It should be used in conjunction with other geochemical, geophysical and geologic studies to understand the processes that cause and influence sulphur-gas anomalies around and over mineral deposits. When the processes become more fully understood, predictive models may be developed for the occurrence of volatile sulphur compounds over different types of mineralisation and over buried mineralisation. Future work will then expand the use of sulphur-gas anomalies from studies of specific mineral deposits to regional and reconnaissance studies. 

Banwart, W.L. and Bremner, J.M., 1975. Formation of volatile sulphur compounds by microbial decomposition of sulphur-containing amino acids in soils. Soil Biol. Biochem., 7 359-364. 

Stevens, R.K., O Keefe, A.E. and Oilman, G.C., 1969. Absolute calibration of a flame photometric detector to volatile sulphur compounds at sub-parts per million levels. Env. Sci. Tech., 3 652-655. 

Leppanen, O.A., Densolw, J. and Ronkainen, P.P. (1979) A gas chromatographic method for the accurate determination of low concentrations of volatile sulphur compounds in alcoholic beverages,/. I. Brewing., 85, 350-353. 

Lestremau, F., Andersson, F.A.T. and Desauziers, V. (2004) Investigation of artefact formation during analysis of volatile sulphur compounds using solid phase microextraction (SPME), Chromatographia, 59(9-10), 607-613. 

Vernin G., Metzger J., GC-MS (El, PCI, NCI, SIM) SPECMA Bank Analysis of Volatile Sulphur Compounds in Garlic Essential Oils. In Essential Oils and Waxes, Linskens HF, Jackson JF, Eds., Springer, Berlin/Heidelberg/New York, pp. 99-130 (1991)... 

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