title: [Determination of formaldehyde in indoor air by gas chromatography].
abstract: Formaldehyde in indoor air was collected by water, derivatized with 2,4-dinitrophenylhydrazine and extracted by cyclohexane. The sample was separated on an OV-17 and QF-1 mixed chromatographic column and determined by electron capture detector. The detection limit was 0.02 mg/L (solution), the minimum detectable concentration was 0.01 mg/m3 while 10 L indoor air was collected. The results show that this is a rapid and sensitive method with less interferences and fairly good precision. The recoveries were 71.0%-90.4% and coefficients of variation were 4.1%-6.5%. The development of this method has made a reliable methodological foundation for the determination of formaldehyde in indoor air.
authors.affiliation: Sanitation and Antiepidemic Station of Zibo City, Zibo, 255026.
authors.forename: C
authors.initials: C
authors.lastname: Zhang
authors.forename: J
authors.initials: J
authors.lastname: Yu
authors.forename: M
authors.initials: M
authors.lastname: Zhai
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000032:analysis*; D002849:Chromatography, Gas; D005557:Formaldehyde / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D005557:Formaldehyde