ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The determination of formaldehyde in waste waters

V. Stankovič

Forschungsinstitut für Wasserwirtschaft in Bratislava

Abstract: For the detn. of HCHO in waste waters and impure surface waters, a modified method of Tanenbaum and Bricker (CA 45, 4603f) with PhNH-NH₂.HCl in alk. medium was described. By changing the reaction conditions, there is salting-out of the iso-PrOH and extn. of the colored compd. (which is used for the detn.) into the alc. layer. The method is sensitive to 0.02-1.0 mg. HCHO/l. in the presence of various inorg. and org. impurities, even in colored and muddy waste waters. The stability of the colored compd. was increased so that it is suitable for series analyses. One detn. takes ∼25 mins.

Full paper in Portable Document Format: 169a683.pdf (in Slovak)

Chemical Papers 16 (9) 683–691 (1962)