Determination of Formaldehyde in Air Using Reflectance Spectrophotometry

  • V. Pitschmann Oritest Ltd., Praque,
  • Z. Kobliha University of Defence, Brno – NBC, Defence Institute, Vyškov
  • E. Halámek University of Defence, Brno – NBC, Defence Institute, Vyškov
  • I. Tušarová Oritest Ltd., Praque,

Abstrakt

A method for determination of formaldehyde in air using 4-amino-3-hydrazino-5-sulfanyl-1,2,4-triazole as chromogenic reagent has been described. The blue coloration formed on an indicator strip was evaluated using reflectance spectrophotometry. The detection limit is at least 0.07 mg m−3 of HCHO (the WHO limit is 0.1 mg m−3) after taking an air sample for 1 min at the flow rate 1 dm3 min−1.
Publikované
2007-11-15
Sekce
Články