Methodology: Feb 26 - Mar 1, 2018 Orange County Convention Center Orlando, FL, USA Accepted for presentation at #Pittcon 2018 in the American Chemical Society Division of Analytical Chemistry Poster Session Sunday evening February 25, 2018 Valencia Ballroom D, W415, of the Orange County Convention Center, 5:30pm-7:30pm Gas Chromatography Application: Environmental Primary Focus: Application Title: A Portable GC/PID for the Analysis of Odorous Sulfur Compounds in Ambient Air Keywords: Air GC Industrial Hygiene Portable Instruments A capillary column gas chromatography method was used for the analysis of sulfur compounds such as hydrogen sulfide, methyl mercaptan, dimethyl sulfide, and dimethyl disulfide in ambient air. The concentration of these sulfur compounds is typically very low (low to sub ppb) in ambient air. Their odor threshold is at the low ppb levels so it is also necessary to make field measurements near odorous sulfur sources such as refineries, pulp