餐盘纸中矿物油的检测及溯源分析

doi:10.7506/spkx1002-6630-20191119-221

食品科学 ›› 2021, Vol. 42 ›› Issue (12): 261-267.doi: 10.7506/spkx1002-6630-20191119-221

餐盘纸中矿物油的检测及溯源分析

张宜彩，林勤保，陈胜，钟怀宁，陈燕芬，曾莹，吴泽春，李忠

（1.暨南大学包装工程研究所，广东普通高校产品包装与物流重点实验室，广东珠海 519070；2.广州海关技术中心，广东广州 510623；3.拱北海关技术中心化学分析实验室，广东珠海 519015）

出版日期:2021-06-25 发布日期:2021-06-29
基金资助:
“十三五”国家重点研发计划重点专项（2018YFC1603204）；广东省动植物与食品进出口技术措施研究重点实验室开放课题（IQTC201803）；珠海进出口公共技术服务平台产学研协同创新计划项目（IETP201901012）

Quantitation and Source Analysis of Mineral Oil Hydrocarbons in Traymates

ZHANG Yicai, LIN Qinbao, CHEN Sheng, ZHONG Huaining, CHEN Yanfen, ZENG Ying, WU Zechun, LI Zhong

(1. Key Laboratory of Product Packaging and Logistics, Packaging Engineering Institute, Jinan University, Zhuhai 519070, China; 2. Guangdong Customs Inspection and Quarantine Technology Center, Guangzhou 510623, China; 3. Chemical Analysis Laboratory of Gongbei Customs Technology Center, Zhuhai 519015, China)

Online:2021-06-25 Published:2021-06-29

摘要/Abstract

摘要： 对15 种餐盘纸中矿物油的含量进行检测，并对其中1 种印刷有已知油墨的餐盘纸进行溯源分析。采用离线固相萃取前处理，以混合溶液（正己烷-乙醇（1∶1，V/V））作为提取溶剂，经0.3%硝酸银硅胶固相萃取柱分离纯化，气相色谱-氢火焰离子化检测法进行定量，气相色谱-质谱法进行定性分析。结果表明：网店购买的4 种餐盘纸的矿物油含量普遍比快餐店中收集到的餐盘纸高，饱和烃矿物油的最高含量为3 397.6 mg/kg，芳香烃矿物油的最高含量为374.6 mg/kg，均超过限量值。通过溯源分析发现，有印刷的餐盘纸中一部分矿物油来源于油墨。本方法的检出限和定量限分别为2.73 mg/kg和8.19 mg/kg，加标回收率为92.1%～115.1%，相对标准偏差为3.12%～11.85%，准确性高，实验操作方便，可用于食品接触用纸中矿物油的检测及溯源分析。

关键词: 矿物油；餐盘纸；固相萃取法；气相色谱-火焰离子化检测；气相色谱-质谱联用

Abstract: In this study, the quantitative analysis of mineral oil hydrocarbons (MOH) in 15 kinds of traymates was conducted, and source analysis was performed on one sample with known printing ink. The sample pretreatment was accomplished by off-line solid phase extraction using a mixed solution (n-hexane:ethanol = 1:1, V/V) as the extraction solvent. Mineral oil saturated hydrocarbon (MOSH) and mineral oil aromatic hydrocarbon (MOAH) were separated and purified on 0.3% silver nitrate silica gel column, quantified by gas chromatography-flame ionization detection (GC-FID), and qualified by gas chromatography-mass spectrometry (GC-MS). The results showed that MOH contents of four kinds of traymates purchased online were higher than those of traymates collected from a fast food restaurant. The maximum content of MOSH was 3 397.6 mg/kg, and the maximum content of MOAH was 374.6 mg/kg, which both exceed the limit value. Through source analysis, it was confirmed that MOH in printed traymates came from the ink. The limit of detection (LOD) and limit of quantitative (LOQ) of the proposed method were 2.73 and 8.19 mg/kg, respectively. The spiked recoveries were 92.1%–115.1%, with relative standard deviation (RSD) of 3.12%–11.85%. This method proved to be accurate, easy to operate and useful for quantitation and source analysis of MOH in food contact paper.

Key words: mineral oil hydrocarbons; traymate; solid phase extraction; gas chromatography-flame ionization detection; gas chromatography-mass spectrometry

中图分类号:

张宜彩，林勤保，陈胜，钟怀宁，陈燕芬，曾莹，吴泽春，李忠. 餐盘纸中矿物油的检测及溯源分析[J]. 食品科学, 2021, 42(12): 261-267.

ZHANG Yicai, LIN Qinbao, CHEN Sheng, ZHONG Huaining, CHEN Yanfen, ZENG Ying, WU Zechun, LI Zhong. Quantitation and Source Analysis of Mineral Oil Hydrocarbons in Traymates[J]. FOOD SCIENCE, 2021, 42(12): 261-267.

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餐盘纸中矿物油的检测及溯源分析

Quantitation and Source Analysis of Mineral Oil Hydrocarbons in Traymates

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