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气相色谱法测葡萄酒中残留甲醇的方法研究 被引量:2

Study on the Method of Determination of Methanol in Wine by Gas Chromatography
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摘要 建立了葡萄酒中残留甲醇的气相色谱分析方法。采用安捷伦6890N型气相色谱仪(配备氢火焰离子化检测器、安捷伦7890B型自动进样器)和HP·INNOWAX30m×0.32mm×0.25m毛细管色谱柱。氮气作为载气,流速为30mL/min,氢气为助燃气30mL/min。样品先经过蒸馏处理,再进样,以外标法定量。标准曲线线性回归方程Y=552.62x-32.096。相关系数是0.9993,在添加浓度为0.79~7.9g/L范围内,葡萄酒的加标回收率为90.1%-105.3%,相对标准偏差为0.04%。0.12%,测得葡萄酒中甲醇含量为72—230mg/L,符合我国卫生标准。此方法操作简单、灵敏,能快速和准确地测定葡萄酒中残留甲醇的含量。 Gas chromatography was established for analyzing methanol content in wine. Agilent 6890N gas chromatograph (equipped with FID, Agilent 7890B automatically sampler) and HP-INNOWAX 30 m × 0. 32 mm × 0. 25 μm capillary chromatographic column was used. Take nitrogen as the carrier gas with the flow rate of 30 mL/min, hydrogen gas as oxidant gas with the flow rate of 30 mL/min. Samples were first processed by distillation, and then into the sample, using external to fix the quota. The standard curve linear regression equation was y = 552.62x - 32. 096. The correlation coefficient was 0. 9993 in the concentration range of 0. 79 - 7.9 g/L, the recovery rate of wine was 90. 1%- 105.3% and the relative standard deviation was 0. 04% -0. 12%. The methanol content in wine was measured in the range of 72 -230 mg/L, which met the health standards in China. This method was easy and sensitive to use. It can determinethe content of methanol in wine rapidly and accurately.
作者 王新 蒋彩云
出处 《江苏调味副食品》 2016年第3期28-34,37,共8页 Jiangsu Condiment and Subsidiary Food
关键词 气相色谱法 葡萄酒 甲醇 方法 研究 gas chromatography wine methanol method research
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