文摘
Twelve samples of plastic materials employed in the industrial extraction of citrus essential oilswere analyzed for the presence of phosphorated plasticizers, chloroparaffins, and phthalate esters.The samples tested were found to release these contaminants into the essential oils during theproduction process. Contamination tests were carried out using dichloromethane and uncontaminatedsamples of citrus essential oils as extractants. The extracts were analyzed by HRGC/FPD, ECD,and MS. Only one sample of plastic material was found to release triaryl phosphates, 5 samplesreleased chloroparaffins, 6 released diisobutyl phthalate, and 8 released bis(2-ethylhexyl) phthalate.Significantly larger quantities of contaminants were released by new plastic parts than by usedplastic parts.Keywords: Plasticizers; essential oils; HRGC/FPD, ECD, MS