Process for the detection of sulfur

Details Process for the detection of sulfur Process for the detection of sulfur

1995-05-16

1997-08-26

Alexander, Lyle A.

Chemistry: analytical and immunological testing

Sulfur containing

Total or elemental sulfur

436119, 436172, 436122, G01N 2176

Patent

active

056610360

ABSTRACT:
A process and apparatus are disclosed for the detection and measurement of sulfur in both organic and inorganic sulfur-containing compounds. The process includes admixing a sample including a sulfur-containing compound with oxygen, and then exposing the mixture to a source of combustion causing heat in the presence of a combustion supporting reducing agent at a combustion site. The resulting gaseous combustion products are vacuum extracted from the combustion site, and then directed into a darkened low pressure chamber. The combustion products in the low pressure chamber are then contacted with ozone, with the result that the sulfur combustion products are converted to chemiluminescent sulfur dioxide. The emitted chemiluminescence is then detected, and may be measured to provide a quantitative indication of the amount of sulfur in the original sample. The preferred source of oxygen is air, the preferred form of combustion heat is a flame, and the preferred form of reducing agent is hydrogen gas.

REFERENCES:
patent: 4066409 (1978-01-01), Fine
patent: 4190368 (1980-02-01), Etess
patent: 4352779 (1982-10-01), Parks
patent: 4678756 (1987-07-01), Parks
patent: 5424217 (1995-06-01), Benner et al.

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