Date of Award

Fall 1977

Document Type


Degree Name

Master of Science (MS)


Chemistry & Biochemistry



Committee Director

Billy T. Upchurch

Committee Member

R. A. Pal

Call Number for Print

Special Collections LD4331.C45D43


The possibility of measuring hydrogen sulfide indirectly by measuring the mercury evolved from the gas-solid reaction between hydrogen sulfide and mercury(I) chloride was studied. DMCS treated glass wool was coated with mercurous chloride and used as a conversion material. The response to hydrogen sulfide was studied as a function of concentration and temperature. The possible interference of other sulfur gases and water was examined.

The studies indicated that hydrogen sulfide could be determined at concentrations as low as 15 ppb. It was found that mercaptans would actively interfere with the hydrogen sulfide to mercury conversion, but that sulfur dioxide would not interfere even in large concentrations. Water was found to interfere by causing the decomposition of the mercurous chloride coated on the support. The time constant of the system was found to be small enough to permit monitoring on a real time basis.


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