Method and apparatus for the analysis of sulphur contents in sam

Details Method and apparatus for the analysis of sulphur contents in sam Method and apparatus for the analysis of sulphur contents in sam

1979-10-05

1981-10-06

Serwin, Ronald

Chemistry: physical processes

Physical processes

Crystallization

422 78, 422 80, 422 89, 23232R, G01N 3108, G01N 2172, G01N 2524

Patent

active

042933080

ABSTRACT:
A method and apparatus for the quantitative determination of very small percentages of sulphur in sample analysis is carried out by means of sample combustion in a helium current temporarily enriched with oxygen, subsequent catalytic oxidation and reduction of the combustion gases, gas chromatographic separation and detection in a thermal conductivity detector. At the outlet of this thermal conductivity detector the products are fed to a water trap and to a sulphur selective detector of the flame photometric type to detect sulphur contents below 0.5 .mu.g.

REFERENCES:
patent: 3771962 (1973-11-01), Winterhalter et al.
patent: 3838969 (1974-10-01), Dugan
patent: 3880587 (1975-04-01), Szakasits et al.
patent: 4070155 (1978-01-01), Fraim
patent: 4119404 (1978-10-01), Price
patent: 4159894 (1979-07-01), Hu
Pella et al., Mikrochimica Acta, Dec. 2, 1977 pp. 752-761.

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