METHOD OF DETERMINING MONOMETHYL ANILINE IN MOTOR GASOLINE BY INDICATOR TEST AGENT Russian patent published in 2013 - IPC G01N33/22 G01N31/22 

FIELD: chemistry.

SUBSTANCE: content of monomethyl aniline in motor gasoline is determined using an indicator test agent from colour transition thereof after coming into contact with a sample of the analysed gasoline. The indicator used is 4-methoxybenzenediazonium tetrafluoroborate which is deposited on a solid support. The indicator test agent used is either reagent test paper, the solid-phase support-base used being rapid test paper, wherein content of monomethyl aniline is determined from change in colour of the paper from white to pink, light-red, red or maroon, or an indicator tube, the solid-phase filler-base used being silicon dioxide, and content of monomethyl aniline is determined from the length of the dark-red coloured area of the tube.

EFFECT: high reliability and accuracy and simple analysis.

2 cl, 5 ex, 1 tbl, 3 dwg