Position: Home > Articles > Determination of Methytin and Ethyltin in Chinese Liquor by Gas Chromatography-Flame Photometry
FOOD SCIENCE
2012,33
(14)
117-120
气相色谱法测定白酒中甲基锡及乙基锡
作 者：
张闻;万益群
单 位：
南昌大学分析测试中心;南昌大学食品科学与技术国家重点实验室
关键词：
二甲基锡;三甲基锡;三乙基锡;气相色谱-火焰光度法;白酒
摘 要：
对白酒中的有机锡化合物采用四乙基硼酸钠进行衍生,液-液萃取,应用气相色谱-火焰光度法进行分析,建立白酒样品中二甲基锡、三甲基锡和三乙基锡同时分析新方法。二甲基锡、三甲基锡和三乙基锡的线性范围为0.2～2.5mg/L,相关系数分别为0.9992、0.9980和0.9991,检出限分别为0.0161、0.0167、0.0110mg/L。在0.5、2.0mg/L两个添加水平的平均回收率为67.6%～103.5%,相对标准偏差为5.14%～18.46%。该方法用于白酒中有机锡化合物的同时检测,结果较满意。
译 名：
Determination of Methytin and Ethyltin in Chinese Liquor by Gas Chromatography-Flame Photometry
作 者：
ZHANG Wen 1,WAN Yi-qun 1,2,(1.Center of Analysis and Testing,Nanchang University,Nanchang 330047,China;2.State key Laboratory of Food Science and Technology,Nanchang University,Nanchang 330047,China)
关键词：
dimethyltin;trimethyltin;tiethyltin;GC-FPD;Chinese liquor
摘 要：
A new GC-FPD method for the simultaneous determination of dimethylltin(DMT),trimethyltin(TMT) and triethyltin(TET) in Chinese liquor was developed.Organotins were derivatized with NaBEt4,extracted by liquid-liquid extraction with n-hexane,and analyzed by gas chromatography-flame photometry(GC-FPD).The developed calibration curve sof DMT,TMT and TET were all linear in the range of 0.2-2.5 mg/L,with correlation coefficients of 0.9992,0.9980 and 0.9991,respectively.The limits of detection for three organotins were 0.0161,0.0167 mg/L and 0.0110 mg/L,respectively.The average recovery rates at spike levels of 0.5 mg/L and 2.0 mg/L were in the range of 67.6%-103.5% with RSD between 5.14% and 18.46%.This new method has been applied for the determination of organotin compounds in wine with satisfactory results.
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