Solubility of hydrogen sulfide, sulfur dioxide, carbon dioxide, propane, and n-butane in poly(glycol ethers)

1988 ◽  
Vol 27 (3) ◽  
pp. 492-499 ◽  
Author(s):  
Steven F. Sciamanna ◽  
Scott Lynn
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Sulfide ◽  
Sulfur Dioxide ◽  
Sulfide Sulfur ◽  
Glycol Ethers

Effect of swine manure dilution on ammonia, hydrogen sulfide, carbon dioxide, and sulfur dioxide releases

2010 ◽  
Vol 408 (23) ◽  
pp. 5917-5923 ◽  
Author(s):  
Ji-Qin Ni ◽  
Albert J. Heber ◽  
Alan L. Sutton ◽  
Dan T. Kelly ◽  
John A. Patterson ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Sulfide ◽  
Sulfur Dioxide ◽  
Swine Manure

The Interaction of Sulfur and Sulfur Compounds with Olefinic Substances. VII. Low-Temperature Sulfuration of Trialkylethylenes with Hydrogen Sulfide-Sulfur Dioxide and with a Sulfur-Zinc Dithiocarbamate System

1955 ◽  
Vol 28 (2) ◽  
pp. 470-479
Author(s):  
E. H. Farmer ◽  
J. F. Ford ◽  
J. A. Lyons
Keyword(s):  
Zinc Oxide ◽  
Hydrogen Sulfide ◽  
Sulfur Dioxide ◽  
Low Temperature ◽  
Room Temperature ◽  
Cross Linking ◽  
Sulfide Sulfur ◽  
Tetramethylthiuram Disulfide ◽  
Zinc Compounds ◽  
Low Concentrations

Abstract The sulfuration of trialkylethylenes with hydrogen sulfide-sulfur dioxide at 0° C (Peachey process) results in disubstitutive cross-linking of the olefins, yielding dialkenyl tetrasulfides. At higher temperatures, substitutive-additive cross-linking occurs, and alkyl alkenyl polysulfides are formed. Dialkenyl tetrasulfides are similarly formed by causing the olefin to react with sulfur at room temperature in the presence of zinc oxide and zinc dibutyldithiocarbamate, low concentrations of hydrogen sulfide acting as a catalyst for this reaction. At higher temperatures, the reaction is also exclusively disubstitutive, a feature connected with the function of zinc compounds in influencing the cross-linking reaction. The sulfuration of olefins with tetramethylthiuram disulfide at 140° C shows a similar influence of zinc compounds.

Qualitative Determination of Impurities in Elemental Selenium by Infrared Spectrophotometry

1969 ◽  
Vol 23 (5) ◽  
pp. 528-531 ◽  
Author(s):  
Robert A. Burley
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Sulfide ◽  
Sulfur Dioxide ◽  
Elemental Selenium ◽  
Infrared Spectrophotometry ◽  
Trace Impurities ◽  
Liquid Sulfur ◽  
Qualitative Determination ◽  
Determination Of Impurities

Infrared spectrophotometry can be applied to the detection of trace impurities and doping elements in high purity elemental selenium. The impurities examined include arsenic, sulfur, tellurium, and their oxides; chlorine, carbon dioxide, hydrogen sulfide, and selenious acid. Present results support earlier conclusions to the effect that the oxidation of impurities occurs readily in molten selenium. The band positions of sulfur dioxide dissolved in vitreous selenium show that the solution is analogous to solutions of sulfur dioxide in liquid sulfur and organic solvents.

scholarly journals Water vapor inhibits hydrogen sulfide detection in pulsed fluorescence sulfur monitors

2016 ◽  
Vol 9 (6) ◽  
pp. 2669-2673 ◽  
Author(s):  
Anders B. Bluhme ◽  
Jonas L. Ingemar ◽  
Carl Meusinger ◽  
Matthew S. Johnson
Keyword(s):  
Hydrogen Sulfide ◽  
Water Vapor ◽  
Sulfur Dioxide ◽  
Relative Humidity ◽  
Pollution Control ◽  
Sulfide Sulfur ◽  
Molybdenum Catalyst ◽  
Air Stream ◽  
Ambient Concentrations ◽  
Converter Unit

Abstract. The Thermo Scientific 450 Hydrogen Sulfide–Sulfur Dioxide Analyzer measures both hydrogen sulfide (H2S) and sulfur dioxide (SO2). Sulfur dioxide is measured by pulsed fluorescence, while H2S is converted to SO2 with a molybdenum catalyst prior to detection. The 450 is widely used to measure ambient concentrations, e.g., for emissions monitoring and pollution control. An air stream with a constant H2S concentration was generated and the output of the analyzer recorded as a function of relative humidity (RH). The analyzer underreported H2S as soon as the relative humidity was increased. The fraction of undetected H2S increased from 8.3 at 5.3 % RH (294 K) to over 34 % at RH  >  80 %. Hydrogen sulfide mole fractions of 573, 1142, and 5145 ppb were tested. The findings indicate that previous results obtained with instruments using similar catalysts should be re-evaluated to correct for interference from water vapor. It is suspected that water decreases the efficiency of the converter unit and thereby reduces the measured H2S concentration.

scholarly journals Water Vapor Inhibits Hydrogen Sulfide Detection in Pulsed Fluorescence Sulfur Monitors

2016 ◽  
Author(s):  
Anders B. Bluhme ◽  
Jonas L. Ingemar ◽  
Carl Meusinger ◽  
Matthew S. Johnson
Keyword(s):  
Hydrogen Sulfide ◽  
Water Vapor ◽  
Sulfur Dioxide ◽  
Relative Humidity ◽  
Pollution Control ◽  
Sulfide Sulfur ◽  
Molybdenum Catalyst ◽  
Air Stream ◽  
Ambient Concentrations ◽  
Converter Unit

Abstract. The Thermo Scientific 450 Hydrogen Sulfide - Sulfur Dioxide Analyzer measures both H2S and SO2. SO2 is measured by pulsed fluorescence, while H2S is converted to SO2 with a molybdenum catalyst prior to detection. The 450 is widely used to measure ambient concentrations, e.g. for emissions monitoring and pollution control. An air stream with a constant H2S concentration was generated and the output of the analyzer recorded as a function of relative humidity. The analyzer under-reported H2S as soon as the relative humidity was increased. The fraction of undetected H2S increased from 8.3 % at 5.3 % RH (294 K) to over 34 % at RH > 80 %. H2S mole fractions of 573, 1142, and 5145 ppb were tested. The findings indicate that previous results obtained with instruments using similar catalysts should be re-evaluated to correct for interference from water vapor. It is suspected that water decreases the efficiency of the converter unit and thereby reduces the measured H2S concentration.

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