元素分析-同位素比质谱法测定葡萄酒中乙醇δ^13C值

比较了旋转蒸发仪、全玻璃蒸馏装置和全自动蒸馏控制系统3种蒸馏方法，对葡萄酒乙醇δ^13C值的影响，确定了元素分析．同位素比质谱仪（Elementaryanalysis-isotoperatiomassspectrometer）最佳测定条件，建立了元素分析．同位素比质谱法测定乙醇δ^13C值方法。在重复性和再现性条件下，对乙醇标准及葡萄酒乙醇δ^13C值进行测定，标准偏差低于0．25‰。检测食品同位素分析技术-能力测试计划（FIT—PTS）两个葡萄酒样品乙醇占。℃值，与给定值相差0．2‰。采用液相色谱-同位素比质谱法（Liquidchromatography-isotoperatiomasssp...

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Bibliographic Details
Published in分析化学 Vol. 42; no. 1; pp. 99 - 103
Main Author 李学民 贾光群 王蕾 曹彦忠 张进杰 孙会媛 霍韶瑜
Format Journal Article
LanguageChinese
Published 秦皇岛出入境检验检疫局,秦皇岛,066004%河北省兽药监察所,石家庄,050035 2014
Subjects
δ^13C值
乙醇
元素分析-同位素比质谱法
葡萄酒
Wine
Elementary analysis-Isotope ratio mass spectrometry
乙醇
Ethanol
δ 13C value
δ13C值
葡萄酒
元素分析-同位素比质谱法
Online AccessGet full text
ISSN0253-3820
DOI10.3724/SP.J.1096.2014.30587

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Summary:比较了旋转蒸发仪、全玻璃蒸馏装置和全自动蒸馏控制系统3种蒸馏方法，对葡萄酒乙醇δ^13C值的影响，确定了元素分析．同位素比质谱仪（Elementaryanalysis-isotoperatiomassspectrometer）最佳测定条件，建立了元素分析．同位素比质谱法测定乙醇δ^13C值方法。在重复性和再现性条件下，对乙醇标准及葡萄酒乙醇δ^13C值进行测定，标准偏差低于0．25‰。检测食品同位素分析技术-能力测试计划（FIT—PTS）两个葡萄酒样品乙醇占。℃值，与给定值相差0．2‰。采用液相色谱-同位素比质谱法（Liquidchromatography-isotoperatiomassspectrometry）与本方法分别对16个国家和地区40个葡萄酒样品的乙醇占。℃值测定，其结果为-23．90％o-28．29‰，且两种检测方法的检测结果差值｜△δ（EA-LC）max｜〈0．3％0，具有较强的相关性（R^2=0．9749）。本方法无同位素分馏，适用于葡萄酒中乙醇δ^13C值测定。
Bibliography:An elementary analysis-isotope ratio mass spectrometric （EA-IRMS） method was developed for the determination ofδ^13C of ethanol in wine. Three distillation apparatuses, including rotary evaporator, all-glass distillation device and fully automatic distillation control system, were compared for wine ethanol distillation. The analytical conditions for EA-IRMS were optimized. The repeatibility and reproducibility were satisfactory with relative standard deviations less than 0.25%0. The δ^13C values of ethanol in two wine samples from FIT- PTS were determined and the accuracy was better than 0.2%0. 40 wine samples from 16 countries and regions were determined by both liquid chromatography-isotope ratio mass spectrometry （LC-IRMS） and this method, and the δ^13C values of ethanol of these samples were between -23.90%0 and -28.29%0. △δ（EA-LC）max of the results was less than 0.3%0, and a strong correlation （R2 =0. 9749） was found between the two methods. The isotope fractionation effect was not found in this method,
ISSN:0253-3820
DOI:10.3724/SP.J.1096.2014.30587