A modified polarographic method is developed for determination of furfurol in the air of the work environment. The method is based on furfurol cathod reduction to furfurol alcohol on dropping mercury electrode on the background of 0.1 M solution of lithium hydroxide. The sensitivity of the method is considerably higher than that of the already known methods, i.e. 0.5 micrograms/cm3. The method is specific - the determination of furfurol is not impede by phenols, other aldehydes, ketones etc. The accuracy of the analytical determination is +/- 1-5%, and the total deviation from both sampling and analysis doesn't surpass +/- 10%. The method developed is accepted and affirmed as arbitrary in the new Bulgarian state standard 16800-88, proposed for the first time. The laboratory and industrial test of the method shows excellent applicability in the sanitary-chemical and chemical practice.