The programmed-temperature-vaporizing (PTV) injector has been developed as a thermal desorption chamber for simultaneous analysis of hydrogen sulfide (H/sub 2/S), methanethiol (CH/sub 3/SH), carbon disulfide (CS/sub 2/), dimethyl sulfide (DMS, CH/sub 3/SCH/sub 3/), and dimethyl disulfide (DMDS, CH/sub 3/SSCH/sub 3/). A trap employing the solid adsorbent Tenax-TA was used to enrich ambient levels of volatile sulfur compounds, then the sulfur gases were thermally released according to programmed temperature from the adsorbent trap and recollected in a column cooled with liquid nitrogen. The sulfur compounds were revolatilized and directly transferred to the system of capillary-column gas chromatography/flame-photometric detector for analysis . Analyses of environmental samples for the complete method of adsorption and temperature-programmed thermal desorption were successfully performed. The sulfur compounds known to cause nuisance odors in the air from various sulfur recovery and sewerage treatment works are compared.
Journal of the Chinese Chemical Society=中國化學會會誌 40(5), pp.455-461