Abstract
Evaluation of O- (2, 3, 4, 5, 6-pentafluorobenzyl) hydroxylamine (PFBOA) method for the determination of aldehydes in indoor air samles was investigated by comparing with 2, 4-dinitorophenylhydrazine (DNPH) method.
The concentrations of aldehydes were measured by the two methods in a newly-built ferroconcrete house under a sealed room condition.
The concentrations of aldehydes obtained by PFBOA method were in good agreement with those obtained by DNPH method; i.e., the values obtained by PFBOA method were 31.2ppb for formaldehyde and 13.lppb for acetaldehyde, while those by DNPH method were 30.8ppb for formaldehyde and 11.5ppb for acetaldehyde, respectively. Although these DNPH-derivatives can be determined by GC-MS, the detection limits were higher than one of PFBOA method. Therefore, it was concluded that the PFBOA method is useful for the determination of aldehydes in indoor air samples. Efficiencies of several methods for removing aldehydes in indoor air were also investigated. Simple ventilation was effective in decreasing concentration of aldehydes.
