Method of analysis for determining very low sulfur levels in vol

Details Method of analysis for determining very low sulfur levels in vol Method of analysis for determining very low sulfur levels in vol

1982-06-07

1983-10-11

Schor, Kenneth M.

Chemistry: analytical and immunological testing

Sulfur containing

Total or elemental sulfur

436122, 436158, 436160, 204 1T, 422 80, G01N 3112, G01N 3116

Patent

active

044093365

ABSTRACT:
A new method is disclosed for determining sulfur levels in liquid or solid samples. The method is capable of accurate determination of sulfur content at sub-parts per million levels. The method and apparatus utilize high temperature oxidation of the samples to form sulfur oxides, absorption of the sulfur oxides on copper oxide as copper sulfate, thermal decomposition of the sulfate to convert sulfur present to sulfur dioxide which is evolved and coulometric titration to measure the quantity of evolved sulfur dioxide from which sulfur content of the sample can be calculated.

REFERENCES:
patent: 1205724 (1916-11-01), Fairlie
patent: 1634331 (1927-07-01), Mase
patent: 2669504 (1954-02-01), Halvorson et al.
patent: 3501897 (1970-03-01), Helden et al.
patent: 3838969 (1974-10-01), Dugan
patent: 4053281 (1977-10-01), Carter
patent: 4170627 (1979-10-01), Ginger
patent: 4172705 (1979-10-01), Castro et al.
Kirsten; Analytical Chemistry, vol. 51, No. 8 (Jul. 1979), pp. 1173-1179.

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