Head-Space-GC Determination of Volatile Organic Compounds in Plastic Packaging Materials for Foodstuffs with Matrix Matching Calibration
摘 要
采用顶空-气相色谱法测定了食品用软质塑料包装材料中具有代表的10种挥发性有机物(VOC′s),包括甲苯、乙酸乙酯、2,4-戊二酮、2-乙基-1-己醇、1-壬醛、癸烷醛、十二烷醛、癸烷、正辛烷及十二烷,并用基体匹配法抵消了样品本身的基体干扰。从待分析样品(包装膜)裁取约100 cm2大小片样置于真空烘箱中,于90 ℃烘24 h,此片试样即可作为空白基质,再加入一定量的上述VOC标准溶液制备校准曲线。另取同一样品一片,剪碎后移入顶空瓶中,立即盖紧,在100 ℃平衡30 min。方法中用HP-INNOWAX色谱柱在20 ℃~220 ℃温度区间程序升温,对各VOC进行分离,采用火焰离子化检测器检测。测得10种VOC′s的检出限(3S/N)在0.2~2.0 μg·dm-2之间。另测得平均回收率及相对标准偏差(n=6)分别在82.5%~97.6%和0.9%~14.0%之间。
Abstract
Ten volatile organic compounds (VOC′s), i.e., toluene, ethyl acetate, 2,4-pentanedione, 2-ethyl-1-hexanol, 1-nanaldehyde, decanecarbaldehyde, dodecanacarbaldehyde, decane, octane and dodecane in soft plastic packaging materials were determined by head-space gas chromatography using matrix matching calibration to compensate the matrix interference. A representative portion of the sample (packaging film, ca. 100 cm2) was taken and stoved in a vacuum oven at 90 ℃ for 24 h. This portion of the sample was cut and used as blank matrix for preparation of calibration curve and definita amounts of standard solutions of the 10 VOC′s wer added to it and treated in the same way as the sample. A similar portion of the sample was cut and transferred into the headspace bottle, closed the bottle immediately and equilibrized at 100 ℃ for 30 min. HP-INNOWAX chromatographic column was used for separation at programed temperature elevation from 20 ℃ to 220 ℃. FID was adopted for determination. Detection limits (3S/N) found for the 10 VOC′s were ranged from 0.2 to 2.0 μg·dm-2. Values of recovery and RSD′s (n=6) were in the ranges of 82.5%-97.6% and 1.0%-14.0% respectively.
中图分类号 O657.7
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基金项目 国家质检总局科研专项(2008IK062)
收稿日期 2010/8/2
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备注程欲晓(1982-),男,福建惠安人,博士,工程师,主要从事化工品检测、技术性贸易措施的研究工作。
引用该论文: CHENG Yu-xiao,ZHOU Yu-yan,MA Ming. Head-Space-GC Determination of Volatile Organic Compounds in Plastic Packaging Materials for Foodstuffs with Matrix Matching Calibration[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2012, 48(1): 32~36
程欲晓,周宇艳,马明. 基体匹配校正-顶空-气相色谱法测定食品塑料包装材料中挥发性有机物[J]. 理化检验-化学分册, 2012, 48(1): 32~36
被引情况:
【1】焦芃然,王馨,阎瑾,鲍峰伟,苏国岁, "顶空-气相色谱法测定烟用水基胶中乙酸乙烯酯的残留量",理化检验-化学分册 51, 1263-1265(2015)
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参考文献
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【2】朱生慧.气相色谱法测定聚苯乙烯中残留单体苯乙烯[J].现代科学仪器, 2008(2):83-85.
【3】马素勤.食品包装材料中挥发性物质的分析方法[J].医学动物防制, 2008,24(12):935-938.
【4】魏黎明,李菊白,李辰.固相微萃取-气相色谱法测定塑料食品包装袋中的痕量挥发性有机物[J].分析测试技术与仪器, 2003,9(3):178-181.
【5】EZQUERRO, PONS B, TENA M T. Direct quantitation of volatile organic compounds in packaging materials by headspace solid-phase microextraction-gas chromatography-mass spectrometry[J]. Journal of Chromatography A, 2003,985:247-257.
【6】EZQUERRO, PONS B, TENA M T. Evaluation of multiple solid-phase microextraction as a technique to remove the matrix effect in packaging analysis for determination of volatile organic compounds[J]. Journal of Chromatography A, 2003,1020:189-197.
【7】陈志峰,潘健伟,储晓刚,等.塑料食品包装材料中有毒有害化学残留物及分析方法[J].食品与机械, 2006,22(2):3-7.
【8】梁学凯,姜杰,费强,等.食品包装用塑料袋中残留苯系物的快速检测[J].理化检验-化学分册, 2007,43(8):627-641.
【9】熊中强,于艳军,李宁涛,等.食品包装材料中的挥发性与迁出性有机残留的检测-顶空气相色谱法[J].中国卫生检验杂志, 2009,19(6):1237-1239.
【10】鞠福龙,梁振芬,李春娟,等.顶空气相色谱法测定药品包装中挥发性有机物[J].化学工程师, 2005(4):27-28.
【11】李伟,许华,常宇文,等.顶空-气相色谱法同时测定塑料食品包装袋中11种有机溶剂残留量[J].化学试剂, 2007,29(8):481-482.
【12】徐春祥,杨洋,高俊伟,等.食品包装复合膜中15种溶剂残留的同时测定方法[J].食品科学, 2008,29(9):496-498.
【13】BRUNO K, LESLIE S E. Static headspace-gas chromatography: Theory and practice[M]. Hoboken, New Jersey: John Wiley & Sons, Inc., 2006.
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