Analysis of the phthalate esters di-(2-ethylhexyl) and di-n-butyl phthalate#x2014;DEHP and DBP. respectively#x2014;has been carried out by means of (a) high-performance liquid chromatography (HPLC) in the system silica gel/hexane-dichloromethane (1:2, v/v) containing 0.1-0.2 of ethanol, and (b) gas chromatography (GC) on 4 OV-101 on Chromosorb W (HP) at a temperature of 240#xB0;C. Detection was done by U.V. absorption spectrometry at 233 nm and flame ionization, respectively.
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