Determination of Migration of 2-Methyl-1,3-Propanediol and 2,2- Methyl-1,3-Propanediol in Food Contact Materials by Gas Chromatography-Mass Spectrometry
Experimental Techniques and Methods|更新时间:2023-02-13
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Determination of Migration of 2-Methyl-1,3-Propanediol and 2,2- Methyl-1,3-Propanediol in Food Contact Materials by Gas Chromatography-Mass Spectrometry
Journal of Instrumental AnalysisVol. 40, Issue 11, Pages: 1657-1662(2021)
BEI Rong-hua,CHEN Xiang-ying,DONG Ben,et al.Determination of Migration of 2-Methyl-1,3-Propanediol and 2,2- Methyl-1,3-Propanediol in Food Contact Materials by Gas Chromatography-Mass Spectrometry[J].Journal of Instrumental Analysis,2021,40(11):1657-1662.
BEI Rong-hua,CHEN Xiang-ying,DONG Ben,et al.Determination of Migration of 2-Methyl-1,3-Propanediol and 2,2- Methyl-1,3-Propanediol in Food Contact Materials by Gas Chromatography-Mass Spectrometry[J].Journal of Instrumental Analysis,2021,40(11):1657-1662. DOI: 10.19969/j.fxcsxb.21072101.
Determination of Migration of 2-Methyl-1,3-Propanediol and 2,2- Methyl-1,3-Propanediol in Food Contact Materials by Gas Chromatography-Mass Spectrometry
A gas chromatography-mass spectrometry(GC-MS) was developed for the determination of migration of 2-methyl-1,3-propanediol(MPO) and 2,2-methyl-1,3-propanediol(NPG)in food contact materials. After the migration test of food contact materials,the obtained soaking solution was firstly derivatized with phenylboric acid solution,then extracted with ,n,-hexane,and finally determined by GC-MS. Results showed that there were good linear relationship of this method in the optimized conditions,with correlation coefficients(,r,2,) larger than 0.995. The detection limits for MPO and NPG in 4% acetic acid,10% ethanol,50% ethanol and isooctane were all 0.01 mg/L within linear ranges of 0.02-0.10 mg/L.The detection limit of MPO in 95% ethanol was 0.30 mg/L within a linear range of 0.50-1.6 mg/L. The detection limit for NPG in 95% ethanol was 0.03 mg/L within a linear range of 0.05-0.16 mg/L.The relative standard deviations(RSD) of this method were in the range of 0.60%-9.5%,and the average recoveries were 85.0%-112%.With the high accuracy and sensitivity,the method could be used to determine the migration of 2-methyl-1,3-propanediol and 2,2-methyl-1,3-propanediol in food contact coatings and plastic products, so as to meet the limited requirements of Chinese regulations.
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