Colorimetric Determination of Formaldehyde Using 1, 3-Diphenyl-2-thiohydantoin and Sodium Hydroxide

Miyuki TAKAYANAGI; Yasuo MORISHIMA; Shoji GOTO; Iwazo HASEGAWA; Tsuneo FUKUDA; Masashi USAMI; Toshiko NAITO; Tamotsu YASHIRO

doi:10.2116/analsci.1.181

Miyuki TAKAYANAGI, Yasuo MORISHIMA, Shoji GOTO, Iwazo HASEGAWA, Tsuneo FUKUDA, Masashi USAMI, Toshiko NAITO, Tamotsu YASHIRO

Author information

Keywords: Formaldehyde, 1,3-diphenyl-2-thiohydantoin, anionic pigment, spectrophotometry

JOURNAL FREE ACCESS

1985 Volume 1 Issue 2 Pages 181-184

DOI https://doi.org/10.2116/analsci.1.181

Details

Abstract

A method for the determination of formaldehyde concentration in water is described. It is based on a coupling reaction of 1, 3-diphenyl-2-thiohydantoin with formaldehyde. In this reaction an anionic pigment is formed by addition of sodium hydroxide solution. The color intensity and formaldehyde concentrations were linearly related in the range up too 100μM. The minimum detectable concentration was 2μM. The precision (R.S.D.) was 3.62%.

Corresponding author

Register with J-STAGE for free!