气相色谱-串联质谱法测定聚萘二甲酸乙二醇酯中2,6-萘二甲酸二甲酯的迁移量  

Determination of Migration of Dimethyl 2,6-Naphthalate in Polyethylene Naphthalate by Gas Chromatography-Tandem Mass Spectrometry

作　　者：魏雪姣 祝惠惠 仝林昌 吴泽颖 练鸿振[3] WEI Xue-jiao;ZHU Hui-hui;TONG Lin-chang;WU Ze-ying;LIAN Hong-zhen(School of Chemical Engineering and Materials,Changzhou Institute of Technology,Changzhou 213032,China;Changzhou Safety Testing Center for Entry-Exit Industrial and Consumable Products,Changzhou 213022,China;School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China)

机构地区：[1]常州工学院化工与材料学院,江苏常州213032 [2]常州进出口工业及消费品安全检测中心,江苏常州213022 [3]南京大学化学化工学院,江苏南京210023

出　　处：《塑料科技》2021年第4期79-82,共4页Plastics Science and Technology

基　　金：国家重点研发计划(2019YFC1605400);国家自然科学基金青年项目(No.21802008);中国博士后科学基金面上资助(2019M651788);江苏省自然科学基金青年项目(BK20201109)。

摘　　要：建立了气相色谱-串联质谱法测定食品接触材料聚萘二甲酸乙二醇酯中2,6-萘二甲酸二甲酯迁移量的方法。采用二氯甲烷对水、质量浓度为30 g/L的乙酸、体积分数10%、20%、50%的乙醇五种食品模拟物中的2,6-萘二甲酸二甲酯进行液液萃取后进样分析。结果表明:2,6-萘二甲酸二甲酯标准溶液的检出限为0.005 mg/L,在0.02~0.50 mg/L范围内线性良好。对5种不同食品模拟物中2,6-萘二甲酸二甲酯进行加标回收实验,平均回收率为96.1%~105.0%,相对标准偏差(n=6)为0.9%~3.7%。实际样品分析结果表明,在50%乙醇食品模拟物中,2,6-萘二甲酸二甲酯的迁移量最高。该方法灵敏度高、抗干扰能力强、定量准确、重现性好,能够满足聚萘二甲酸乙二醇酯中2,6-萘二甲酸二甲酯迁移量测定要求。The determination of the migration of dimethyl 2,6-naphthalene dicarboxylate in food contact material poly(ethylene naphthalate)by gas chromatography-tandem mass spectrometry was established.Dichloromethane was used for the extraction of dimethyl 2,6-naphthalene dicarboxylate in five aqueous food simulants,including water,acetic acid with a mass concentration of 30 g/L,ethanol with a volume fraction of 10%,20%and 50%.The results indicated that the limit of detection is 0.005 mg/L,with a good linearity in the range of 0.02 to 0.50 mg/L.The recoveries and relative standard deviations(n=6)at three different spiked levels range from 96.1%~106.3%and 0.9%~3.7%,respectively.The analysis results of real samples show that dimethyl 2,6-naphthalene dicarboxylate exhibited the highest migration in volume fraction 50%ethanol food simulant.The established method is accurate and stable,and is able to meet all the requirements set in the regulations on the determination of the migration of dimethyl 2,6-naphthalene dicarboxylate in poly(ethylene naphthalate).

关 键 词：气相色谱-串联质谱法 食品材料 2 6-萘二甲酸二甲酯 

分 类 号：O657.63[理学—分析化学] TS206.4[理学—化学]