POLAROGRAPHY DETERMINATION OF FREE FORMALDEHYDE ON TREATED COTTON FABRICS

Application of compounds which, on textile material, release small qua ntities of formaldehyde makes it necessary to develop an adequate anal ytical method. Polarography is one of the possible analytical methods to be used. This paper investigates the possibility of using an indire ct DC polarographic method via semicarbazone, with direct extraction o f formaldehyde in the polarographic cell. Such a modified polarographi c method is highly sensitive and selective, it makes it possible to me asure small quantities of formalhyde, while the maximum sample mass to be measured is around 0.2 g. Disturbances that presumably occur due t o the presence of surface active agents on the textile material do not occur in the samples smaller than 0.2 g in 30 ml of the polarographic solution.