超声萃取/气相色谱-质谱联用法同时测定皮革及其制品中21种有害有机溶剂的残留量 |
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基金项目:国家质检总局科研项目(2011IK105,2012IK119,2014IK163) |
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中文摘要:建立了气相色谱-质谱/选择离子监测方法,对皮革及其制品中21种有害有机溶剂的残留量进行了同时测定。该方法以乙酸乙酯为萃取溶剂,45℃下超声萃取皮革及其制品中残留的有害有机溶剂,萃取液经固相萃取柱净化后进行气相色谱-质谱/选择离子监测法分析,外标法定量。结果表明,在信噪比(S/N)为10的条件下,乙二醇二丁醚(EGDBE)、三乙二醇二甲醚(TEGDME)、二乙二醇单丁醚(DEGBE)和三乙二醇单乙醚(TEGEE)的定量下限均为50μg/kg,N-甲基乙酰胺(MA)和N-甲基甲酰胺(MF)的定量下限均为150μg/kg,甲酰胺的定量下限为300μg/kg,其余14种组分的定量下限均为100μg/kg。在3个不同加标水平下,方法的平均加标回收率为82.1%~94.9%,相对标准偏差(RSD,n=9)为1.6%~4.8%。该方法简单快捷,灵敏度高,可用于皮革及其制品中有害有机溶剂残留量的测定。 |
中文关键词:超声萃取 气相色谱-质谱 选择离子监测 皮革 乙二醇醚 酰胺 N-甲基吡咯烷酮 |
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Determination of Residues of 21 Harmful Organic Solvents in Leather and Leather Products by Gas Chromatography-Mass Spectrometry Combined with Ultrasonic Extraction |
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Abstract:A method was established to determine simultaneously the residues of 21 harmful organic solvents in leather and leather products by gas chromatography-mass spectrometry in selected ion monitoring mode(GC-MS/SIM).Residual harmful organic solvents in leather and leather products were ultrasonically extracted at 45℃,using ethyl acetate as extraction solvent.The extracts were purified with solid-phase extraction(SPE) columns,and then analyzed by gas chromatography-mass spectrometry in selected ion monitoring mode(GC-MS/SIM).The content of each analyte was calibrated by the external standard method.At the condition of signal to niose(S/N) of ten,the limits of quantitation(LOQs) were 50μg/kg for ethylene glycol dibutyl ether(EGDBE),triethylene glycol dimethyl ether(TEGDME),diethylene glycol butyl ether(DEGBE) and triethylene glycol ethyl ether(TEGEE),150μg/kg for N-methylformamide(MF) and N-methylacetamide(MA),300μg/kg for formamide,and 100μg/kg for all the other fourteen compounds.The spiked average recoveries varied from 82.1% to 94.9% at three spiked levels with relative standard deviations(RSD) of 1.6%-4.8%.The proposed method was simple,rapid,accurate and sensitive,and was suitable for the determination of residual harmful organic solvents in leather and leather products. |
Key Words:ultrasonic extraction gas chromatography-mass spectrometry(GC-MS) selected ion monitoring(SIM) leather glycol ethers amides N-methylpyrrolidone |
引用本文:王成云*,施钦元,褚乃清,林君峰,谢堂堂.超声萃取/气相色谱-质谱联用法同时测定皮革及其制品中21种有害有机溶剂的残留量[J].分析测试学报,2016,35(4):380-387. |
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