气相色谱法测定红枣中乙醛, 乙醇的含量.pdf

文档介绍：气相色谱法测定红枣中乙醛、乙醇的含量——张艳艳,陈恺,许铭强,王栋,杨越婷,李焕荣
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气相色谱法测定红枣中乙醛、乙醇的含量
张艳艳,陈恺,许铭强,王栋,杨越婷,李焕荣
(新疆农业大学食品科学与药学学院,乌鲁木齐 830052)
摘要:为建立气相色谱法测定红枣中乙醛、乙醇含量的方法,采用 GSBP-Lnowax—MS(30m×
×)色谱柱分离、FID检测器、外标法探索了检测条件,结果表明:在进样温度 200。【=,柱温 45℃,
检测器温度 200℃;氮气流速 25mL/min,空气压力 40kPa,氢气压力 kPa条件55 下乙醇、乙醛有较好的
分离效果,乙醛在 % ~%,乙醇在 % ~%内呈良好的线性关系,该方法
准确可靠,可用于红枣中乙醛、乙醇含量的检测。
关键词:气相色谱法;红枣;乙醛;乙醇
中图分类号: 文献标识码:A 文章编号:1005—1295(2012)05—0013—03
doi:.1005—
DeterminationAcetaldehydeof and Ethanol jujubein by GC
ZHANG Yan—yan,CHEN Kai,XU Ming—qiang,WANG Dong,YANG Yue-ting,LI Huan-rong
(College of FoodUniversity,UrumqiPharmacyand of (College 830052,China) Science,XinjiangAgricultural
Abstract:A gas chromatography method was described fordetermination theof acetaldehyde and ethanol
in -Lnowax in Glycol(30m××)asPolyethylene phase;Hydrogen stationary the
flame ionization detectorwas applied;The column temperature was45℃;inlet temperature was200~C;nitrogen
flow rate was 25mlMmin;Air pressure was 40kPa,hydrogen pressure was the certain chromato—
gram condition,there was linear relation among the acetMdehyde and ethanol camphor,and the peak area in
the scope %of ~% .% ~% experiment provides an accurate
and reliable method to control