| 微蒸馏气相色谱法测定水溶液样品中的甲醇 |
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| 引用本文： | 吴秀珍,王雁.微蒸馏气相色谱法测定水溶液样品中的甲醇[J].化工科技,2002,10(4):37-39. |
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| 作者姓名： | 吴秀珍 王雁 |
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| 作者单位： | 中国石油吉林石化公司研究院,吉林,吉林,132021 |
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| 摘 要： | 通过微蒸馏方法将水中的甲醇与基体分离，并且同时富集微量甲醇，用气相色普法分析，氢焰检测器检测，样品需要（5－20）mL(取决于甲醇的浓度）,蒸馏时间大约为5min，加入NaCl，可以提高检测灵敏度，甲醇检测限为0．02mg/L，平均回收率为97．8％，浓缩倍数为30倍，本方法适用于微量甲醇的分析，同时也可用于常量分析。
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| 关 键 词： | 微蒸馏气相色谱法 测定 水溶液样品 甲醇 富集 分析 |
| 文章编号： | 1008-0511(2002)04-0037-03 |
| 修稿时间： | 2002年6月10日 |
DETERMINATION OF METHANOL FROM AQUEOUS SAMPLES BY GAS CHROMATOGRAPHY WITH MICRODISTILLATION |
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| WU Xiu-zhen,WANG Yan.DETERMINATION OF METHANOL FROM AQUEOUS SAMPLES BY GAS CHROMATOGRAPHY WITH MICRODISTILLATION[J].Science & Technology In Chemical Industry,2002,10(4):37-39. |
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| Authors: | WU Xiu-zhen WANG Yan |
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| Abstract: | Methanol from Aqueous Sample can be concentrated and separated with microdistillation, analyzed by gas chromatography with flame ionization detection. Sample volume requirements range from 5 to 20 mL. The method detection limit for methanol is 0.02mg/L. The concentration factor is 30 .The total distillation time is about 5 min. The average recovery is 97.8%. Microdistillation system is very effective to concentrate water-soluble volatile organic compounds. This method applies to trace quantity, also ordinary quantity,of methanol. |
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| Keywords: | Microdistillation Methanol Gas chromatography |
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