Continuous ambient sulfur measurements are routinely conducted around the globe at numerous monitoring sites impacted by industrial sources, such as gas and oil processing facilities, pulp and paper mills, smelters, sewage treatment facilities, and concentrated animal feeding operations, as well as by natural sources, such as volcanoes. Various jurisdictions have or plan to establish air ambient quality objectives, guidelines, or standards for total reduced sulfur (TRS) based on odor perception and/or health effects. A conventional TRS monitoring technique is widely used, but few studies have looked at potential biases in the resulting TRS measurements. This paper presents a novel method to quantify total sulfur (TS) concentrations to investigate odor events caused by sulfur compounds and to construct the sulfur budget for sulfur dioxide (SO