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首页> 外文期刊>Chromatographia >Determination of Volatile Compounds in Wine by Automated Solid-Phase Microextraction and Gas Chromatography
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Determination of Volatile Compounds in Wine by Automated Solid-Phase Microextraction and Gas Chromatography

机译：固相微萃取和气相色谱法测定葡萄酒中的挥发性化合物

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摘要

Solid-phase microextraction in headspace mode has been applied to the determination of volatile compounds (3-methyl-1-butyl acetate, 3-methyl-1-butanol, ethyl hexanoate, pentanol, hexanol, linalool, diethyl succinate, α-terpineol, 2-phenylethyl acetate, geraniol, 2-phenylethanol and octanoic acid) in wine samples from the Denominación de Origen Calificada Rioja using gas chromatography and a flame ionization detector. After the preliminary tests, several parameters were optimized using a Plackett-Burman design to get the most relevant variables. These parameters were: extraction time, desorption time, split ratio, magnetic stirring, type of fibre, type of injection (headspace or direct sampling) and type of salt. Five wine samples were analysed under optimum conditions. Concentrations ranging from 0.0104 mg L−1 for pentanol and 48.9 mg L−1 for 3-methyl-1-butanol were obtained. Linalool, α-terpineol and geraniol were not detected. Limit of detection ranging 0.00150-0.00800 mg L−1 and relative standard deviation ranging 1.1–5.7% were obtained.
机译：顶空模式的固相微萃取已用于测定挥发性化合物（3-甲基-1-丁基乙酸酯，3-甲基-1-丁醇，己酸乙酯，戊醇，己醇，芳樟醇，琥珀酸二乙酯，α-松油醇，使用气相色谱仪和火焰电离检测器从Denominaciónde Origen Calificada Rioja的葡萄酒样品中提取2-苯乙酸乙酯，香叶醇，2-苯乙醇和辛酸）。在初步测试之后，使用Plackett-Burman设计优化了几个参数，以获得最相关的变量。这些参数是：萃取时间，解吸时间，分流比，磁力搅拌，纤维类型，进样类型（顶空或直接进样）和盐的类型。在最佳条件下分析了五个葡萄酒样品。戊醇的浓度范围为0.0104 mg L-1 ，3-甲基-1-丁醇的浓度范围为48.9 mg L-1 。未检出芳樟醇，α-松油醇和香叶醇。检出限为0.00150-0.00800 mg L-1 ，相对标准偏差为1.1-5.7％。

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