Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1987-12-11
1988-11-22
Marcus, Michael S.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 54, 422 67, 436154, 436161, 55386, 585825, G01N 3002, G01N 2100
Patent
active
047864753
ABSTRACT:
The invention concerns a method and an equipment for the simulated distillation, by means of gas chromatography, of petroleum products, capable of characterizing also high boiling products, exceeding C55, over 600.degree. C. TBP. A chromatograph is used with a capillary column having a length less than or equal to 10 m, containing an immobilized non polar polydimethylsilicon gum stationary phase with a film thickness less than or equal to 0.2 .mu.m. The sample is introduced through a non vaporizing direct cold on-column injection and the eluted sample is detected by means of a FID detector. The column oven is operated in temperature programming conditions up to temperatures exceeding 400.degree. (up to 430.degree.-450.degree. C.).
REFERENCES:
patent: 3661527 (1972-05-01), Eggertsen et al.
patent: 4135881 (1979-01-01), Bakx et al.
patent: 4376641 (1983-03-01), Nestrick et al.
Quantitative Gas Chrom Analysis of Hydros w/Capillary Columns and Flame Ioniz. Detector, Anal. Chem, 36, 3, p. 461, 1964.
Munari Fausto
Saravalle Carlo
Trestianu Sorin
Alfandary-Alexander Lyle
Carlo Erba Strumentazione S.p.A.
Marcus Michael S.
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