A sensitive spectrophotometric method for the determination of methyl alcohol in air and water.
A sensitive spectrophotometric method for the indirect determination of methyl alcohol in air and water is described. The methyl alcohol is oxidized to formaldehyde which is then determined in acidic medium with p-aminoazobenzene and sulphur dioxide. Beer's law is obeyed in the range 100-600 mug of methyl alcohol in 25 ml of final solution and the wavelength of maximum absorption is 505 nm. The lower limit of determination is 5 mug ml in the sample. Several common organic co-pollutants do not interfere. The method can be used for determination of methyl alcohol in blood.
Verma
P
P
Department of Chemistry, Ravishankar University, Raipur 492010, India.
Gupta
V K
VK