广州海关技术中心,广东 广州 510665
李丹,研究员,研究方向:食品接触材料检测及安全评估,E-mail:lid@iqtcnet.cn
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贝荣华,陈湘颖,董犇等.气相色谱-质谱法测定食品接触材料中2-甲基-1,3-丙二醇和新戊二醇的迁移量[J].分析测试学报,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.
贝荣华,陈湘颖,董犇等.气相色谱-质谱法测定食品接触材料中2-甲基-1,3-丙二醇和新戊二醇的迁移量[J].分析测试学报,2021,40(11):1657-1662. DOI: 10.19969/j.fxcsxb.21072101.
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.
建立了食品接触材料中2-甲基-1,3-丙二醇(MPO)和新戊二醇(NPG)迁移量的气相色谱-质谱(GC-MS)检测方法。食品接触材料经迁移试验后,所得浸泡液经苯硼酸溶液衍生化、正己烷萃取后,GC-MS测定。结果表明,该方法在优化条件下的线性相关性良好,相关系数(,r,2,)大于0.995;MPO和NPG在4%乙酸、10%乙醇、50%乙醇和异辛烷中的检出限均为0.01 mg/L;线性范围均为0.02~0.10 mg/L;在95%乙醇中,MPO的检出限为0.30 mg/L,线性范围为0.50~1.6 mg/L,NPG的检出限为0.03 mg/L,线性范围为0.05~0.16 mg/L。该方法在低、中、高3个浓度水平的平均回收率为85.0%~112%,相对标准偏差(RSD)为0.60%~9.5%。该方法的检测结果准确、灵敏度高,能较好地实现食品接触材料及制品中MPO和NPG迁移量的测定,满足我国法规的限量要求。
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.
2-甲基-1,3-丙二醇(MPO)新戊二醇(NPG)食品接触材料气相色谱-质谱法(GC-MS)衍生化法
2-methyl-1,3-propanediol(MPO)2,2-methyl-1,3-propanediol(NPG)food contact materialsgas chromatography-mass spectrometry (GC-MS)derivatization method
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