Hydrogen sulfide emissions monitoring

Hydrogen sulfide emissions were monitored at the sulfur-asphalt mixing equipment at the hot-mix plant and at the paving site. A Houston-Atlas ambient H2S detection system, furnished and operated by the U.S. Bureau of Mines, was used as well as portable equipment such as a Rotorod Gas Sampler and Drager tubes. The emissions at some of the critical areas of the hot-mix plant and paving site are given in Table VI. 

The chemiluminescent reaction with chlorine dioxide provides a highly sensitive and highly selective method for only two sulfur compounds, hydrogen sulfide and methane thiol [81]. As in the flame photometric detector (FPD), discussed below, atomic sulfur emission, S2(B3S -> ) is monitored in the wave-... 

The Texas Air Control Board was responsible for monitoring emissions of hydrogen sulfide and sulfur dioxide during all phases of the Sulphlex construction The measurements indicated that neither gas was present at levels near those which would pose a safety or environmental hazard during any phase of the operation. 

Determination of total fluoride emissions from stationary sources—SPADNS zirconium lake method Determination of total fluoride emissions from stationary sources—specific ion electrode method Determination of fluoride emissions from potroom roof monitors for primary aluminum plants Determination of total fluoride emissions from selected sources at primary aluminum production facflities Determination of hydrogen sulfide, carbonyl sulfide, and carbon disulfide emissions from stationary sources Determination of total reduced sulfur emissions from sulfur recovery plants in petroleum refineries Semicontinuous determination of sulfur emissions from stationary sources Determination of total reduced sulfur emissions from stationary sources (impinger technique)... 

Ultraviolet photometers are also available for continuously monitoring the concentration of one or more constituents of gas or liquid streams in industrial plants, rhe instruments are double beam in space (sec Figure 1.3-16b) and often employ one of the emission lines of mercury, which has been isolated by a filter system. Typical applications include the determination of low concentrations of phenol in wastewater monitoring the concentration of chlorine, mercury, or aromatics in gases and the determination of the ratio of hydrogen sulfide to sulfur dioxide in the atmosphere. 

The flow-cell design was introduced by Stieg and Nieman [166] in 1978 for analytical uses of CL. Burguera and Townshend [167] used the CL emission produced by the oxidation of alkylamines by benzoyl peroxide to determine aliphatic secondary and tertiary amines in chloroform or acetone. They tested various coiled flow cells for monitoring the CL emission produced by the cobalt-catalyzed oxidation of luminol by hydrogen peroxide and the fluorescein-sensitized oxidation of sulfide by sodium hypochlorite [168], Rule and Seitz [169] reported one of the first applications of flow injection analysis (FTA) in the CL detection of peroxide with luminol in the presence of a copper ion catalyst. They... 

---