Contamination in sold edible vegetable oils from 18 phthalates:an investigation in Weifang
Objective To investigate the status of phthalates(PAEs)contamination in edible vegetable oils packaged in plastic jugs sold in Weifang in 2021.Methods Samples of edible vegetable oils(n=125)extracted from seeds of cereals were randomly purchased from various supermarkets,farmers markets and rural cooking oil processing workshops in Wei-fang in 2021 for detecting a total of 18 common PAEs used as plasticizers by gas chromatography-mass spectrometry(GC-MS).Results The top five PAEs detected in the 125 samples were Di(2-ethylhexyl)phthalate(DEHP,62.4％),dibutyl phthalate(DBP,42.4％),dipentyl phthalate(DPP,32.8％),bis(2-butoxy)ethyl phthalate(DBEP,31.2％)and diisononyl phthalate(DINP,13.3％).The mean concentration of DBP was 0.235 mg/kg,with the highest concentra-tion of 0.802 mg/kg,and the rate of samples with a concentration of DBP higher than relevant migration limits was 16.8％.The mean concentration of DEHP was 0.332 mg/kg,with the highest concentration of 1.889 mg/kg,and the rate of samples with a concentration of DEHP exceeding relevant migration limits was 4.0％.The mean concentration of DINP was 1.010 mg/kg,with the highest concentration of 16.96 mg/kg,and the rate of samples with a concentration of DINP exceeding rel-evant migration limits was 3.2％.Conclusion The detection rate of PAEs in edible vegetable oils packaged in plastic jugs sold in Weifang is relatively high.It is suggested that relevant departments pay attention to the contamination in food from packaging materials,and carry out relevant monitoring regularly.
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