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Title: Determination Of Hydrogen Sulfide& Total Sulfur In Natural Gas Class 157
Author: Rodney W. Spitler
Source: 1999 International School of Hydrocarbon Measurement
Year Published: 1999
Abstract: Hydrogen sulfide, H2S, is a colorless and flammable gas at room temperature. H2S has the characteristic foul odor of rotten eggs. H@ is nearly as toxic as hydrogen cyanide, HCN, and should be handled with extreme caution. Exposure to HZS concentrations on the order of 20 - 50 ppm causes eye irritation. Concentrations slightly higher than 20 -50 ppm will cause upper respiratory tract irritation. Symptoms of HZS exposure include headache, dizziness, excitement, staggering, and gastroenteric disorders. H2S concentrations above 600 ppm can be fatal within 30 minutes through respiratory paralysis. A particular danger when handling HZS is that continuous exposure may lead to olfactory fatigue. If this condition occurs then the user will be unable to smell the characteristic foul odor of H2S. 12)

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