FIELD: oil and gas industry.
SUBSTANCE: monomethylaniline (MMA) content in hydrocarbon fuels is determined by the colour transition of the indicating test agent after contacting with the analysed sample. The indicating test agent is a plate for thin-layer chromatography (TLC) of Sorbfi brand with sorbent silica gel impregnated by indicator solution tetrachloro-1,4-benzoquinone. By appearance at the site of the analysied sample contacting with indicator testing means of a spot having the colour from pale violet to dark blue, a judgement is made on MMA presence in the sample, after which the spot colour intensity is determined, and by calibration dependence of spot colour intensity on the concentration, MMA concentration in hydrocarbon fuel is determined.
EFFECT: increased sensitivity and analysis selectivity.
4 dwg, 4 tbl, 4 ex
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