Method for determining adulteration of gasolines

Details Method for determining adulteration of gasolines Method for determining adulteration of gasolines

1993-10-20

1994-10-25

Bhat, N.

Chemistry: analytical and immunological testing

Tracers or tags

436690, 436178, G01N 3508

Patent

active

053588738

ABSTRACT:
Reformulated and other automotive motor gasolines may be analyzed to detect adulteration with gasolines containing a Rhodamine B base marker dye by mixing a small sample of the suspected fuel in a vial containing a small quantity of unbonded flash chromatography-grade silica. The presence of such marker dye in the suspect sample will color the silica red. The coloration may be detected in fuel samples which also contain red or blue grade identification dyes, detergent additives and oxygenates such as ethanol and MTBE.

REFERENCES:
patent: 3976572 (1976-09-01), Reilk
patent: 4049393 (1977-09-01), Orelup
patent: 4514503 (1985-04-01), Orelup
patent: 4717671 (1988-01-01), Melpodor
patent: 4918020 (1990-04-01), Nowak
patent: 5229298 (1993-07-01), Zoulmalan
patent: 5244808 (1993-09-01), Nowak

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