A Comparison of Soxhlet Extraction and Ultrasonic-Assisted Extraction for Analysis of Photoinitiators in Printed Cartonboard Food-packaging Materials
A new method was established for detecting a series of photoinitiators (PIs) in printed cartonboard food-packaging materials,which were benzophenone (BP),4-methylbenzophenone (MBP),1-hydroxycyclohexyl phenyl ketone (Irgacure184),ethyl-4-dimethylaminobenzoate (EDAB),2-ethylhexyl-4-dimethylaminobenzoate (EHDAB) and 2-isopropylthioxanthone (ITX) by gas chromatography-mass spectrometry (GC/MS).Extraction was carried out with ethyl acetate by ultrasonic solvent extraction.Samples were analyzed by GC/MS in selected ion monitoring (SIM) mode.The results indicated that six kinds of PIs had good linear relations (R2>0.9989) in the range of 10~200 μg/L.Limit of Detections (LODs) and Limit of Quantifieations (LOQs) of all kinds of PIs were 0.3~2.6 μg/kg and 1~8 μg/kg,respectively.The recoveries of six kinds of PIs at three kinds of concentrations researched (0.30 μg/kg,0.60 μg/ kg,1.0 μg/kg) were ranging from 66.7%~89.4%,with the Relative Standard Deviation (RSD) of 4.2%~10.6% (n=6).The results also suggested that PIs were detected in food packaging materials.
Gas chromatography-mass spectrometry (GC-MS) Packaging material Printed ink, Photoinitiator (PIs) Ultrasonic solvent extraction Soxhlet extraction
DING Chao WANG Fang PANG Meixia YI Xinxin TAN Feng XU Yang QI Jinghua
College of Food Science and Engineering, Beijing University of Agriculture, China
国际会议
the 2nd China Academic Conference on Printing and Packaging (2012第二届中国印刷与包装学术会议(CACPP 2012))
北京
英文
561-566
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）