Artículos de revistas
Development of spectrophotometric method for the analysis of paraformaldehyde in commercial and industrial disinfectants
Fecha
2002-01-01Registro en:
Ecletica Quimica. Sao Paulo: Editora Unesp, v. 27, p. 211-221, 2002.
0100-4670
WOS:000179435100018
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
This paper describes a spectrophotometric method for the paraformaldehyde analysis in industrial and commercial disinfectant samples using chromotropic acid, concentrated hydrochloridric acid and hydrogen peroxide. The reaction produces a violet-red compound (lambda(max) = 575 nm). The method permits the determination of paraformaldehyde over a concentration range of 0.8-4.8 mg L-1 and the results obtained by the proposed method compared very favorably with those obtained by NIOSH's standard procedure.