Study on the pollution level and source analysis of aldehydes and ketones in indoor environment based on HPLC platform

Abstract

The pollution level of aldehydes and ketones in indoor air, floor, coating, and furniture samples was analyzed by using high-performance liquid chromatography(HPLC). The study showed that 30 rooms were detected with different concentrations of aldehydes and ketones, with an average value of 0.432 mg/m3, mainly including formaldehyde, acetaldehyde, and acrolein/acetone. The average concentrations of aldehydes and ketones in floor, furniture and coating samples were 0.648 mg/m3, 0.590 mg/m3 and 0.341 mg/m3, respectively. Factor analysis and multiple linear regression analysis were used to determine that the contribution rate of aldehydes and ketones pollution caused by floor, coating and furniture samples accounted for 75.4% of indoor pollution. The least square method was used to fit the concentrations of aldehydes and ketones in indoor air and corresponding decorated materials in 10 rooms. The results showed that the pollution of aldehydes and ketones in these 10 rooms was mainly caused by coating, as well as floor and furniture materials dominated by wood products.