Automatic Apparatus for Determination of Small Concentrations of Sulfur Dioxide in Air - Application to Hydrogen Sulfide, Mercaptan, and Other Sulfur and Chlorine Compounds

1943 ◽  
Vol 15 (4) ◽  
pp. 287-290 ◽  
Author(s):  
Moyer Thomas ◽  
James Ivie ◽  
John Abersold ◽  
Russel Hendricks
Keyword(s):  
Hydrogen Sulfide ◽  
Sulfur Dioxide ◽  
Automatic Apparatus

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.

Conductimetric Gas Separation-Flow Injection Determination of Ammonia in Gaseous Process Streams

1997 ◽  
Vol 62 (4) ◽  
pp. 609-619 ◽  
Author(s):  
Vlastimil Kubáň
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Hydrogen Sulfide ◽  
Sulfur Dioxide ◽  
Hydrogen Cyanide ◽  
Separation Flow ◽  
Ammonia Content ◽  
Process Gas ◽  
Capillary Membrane

Ammonia (up to 0.3 vol.%) can be determined (RSDs < 2%) after separation from a process gas stream containing (vol.%): carbon dioxide (0.3-20), hydrogen sulfide (< 0.4), hydrogen cyanide (< 1.5 . 10-4), sulfur dioxide (1), carbon monoxide (< 3) in 50-90 vol.% nitrogen and hydrocarbons. The ammonia content in sample is determined through changes in the conductivity of an acceptor stream (3 mM boric acid) caused by absorption of the analyte passed through a Nafion capillary membrane.

scholarly journals Determination of Hydrogen Sulfide and Sulfur Dioxide in Air (Part 1); Errors in Iodometry

1954 ◽  
Vol 3 (1) ◽  
pp. 7-10 ◽  
Author(s):  
YASUSHI KITANO ◽  
HIDEMATSU TAKAKUWA
Keyword(s):  
Hydrogen Sulfide ◽  
Sulfur Dioxide
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