R. I. 4547

The Determination of Low Concentrations of Hydrogen Sulfide in Gas by the Methylene Blue Method1 - 1949

A. E. Sands2
M. A. Grafius3
H. W. Wainwright3
M W. Wilson4

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Table of Contents

Page
Introduction 2
Summary and conclusions 2
Discussion 3
Investigations at Morgantown 6
Study of variables affecting method 6
Effect of amount of amine used 6
Comparison of the hydrochloride and sulfate of the diamine 7
Blank values 7
Temperature 7
Interfering substances 9
Applicability to various commercial gases 10
Range of test 11
Age of reagent 11
Absorbents for H2S 13
Minimum H2S concentrations in gas determined by this method 15
Wave length and filter selection 16
Procedure 17
Reagents 17
Curve calibration 18
Determination of unknown solution 18

1 Work completed on manuscript March, 1949.  The Bureau of Mines will welcome reprinting of this paper, provided the following footnote is used:  "Reprinted from Bureau of Mines Report of Investigations 4547"

2  Assistant chief, Synthesis Gas Production Branch, Office of Synthetic Liquid Fuels, Bureau of Mines, Morgantown, W. Va.

3  Chemist, Synthesis Gas Production Laboratories, Office of Synthetic Liquid Fuels, Bureau of Mines, Morgantown, W. Va.