Artículos de revistas
Desenvolvimento de método espectrofotométrico para análise de paraformaldeído em saneantes comerciais e industriais
Fecha
2002-12-01Registro en:
Ecletica Quimica, v. 27, p. 211-221.
0100-4670
2-s2.0-17444437164
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 (λmax = 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.