Abstract

In this paper, volatile low molecular weight aldehydes and ketones in samples of leather shoes were collected by static absorption with water, analyzed and detected by 2,4dinitrophenylhydrazine precolumn derivatization of high performance liquid chromatography(HPLC). Firstly, the sampling temperature and time of the volatile aldehyde and ketone in leather shoes were optimized and then the volatile aldehyde and ketone in absorption liquid were determined. The experiment result shows that the optimal temperature is 45°C, the sampling time is 24 hours. The collected sample was derivatized by purified sulfuric acid acidulated 2,4dinitrophenylhydrazine. The volatile aldehydes and ketones in absorption liquid of leather shoes were formaldehyde, acetaldehyde, acetone, propionaldehyde, butyraldehyde, benzaldehyde, cyclohexanone and hexanal. the average concentrations of which are: 0.252mg/shoe, 0.061mg/shoe, 0.079mg/shoe, 0.053mg/shoe, 0.037mg/shoe, 0.011mg/shoe, 0.09mg/shoe, 0.018mg/shoe respectively. This method is suitable for determination of volatile aldehydes and ketones in leather shoes.