| 径向扩散对毛细管色谱峰形的影响 |
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| 引用本文： | 张维冰,杨黎,许国旺,张玉奎,史景江,卢佩章.径向扩散对毛细管色谱峰形的影响[J].齐齐哈尔大学学报(自然科学版),1996(3). |
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| 作者姓名： | 张维冰 杨黎 许国旺 张玉奎 史景江 卢佩章 |
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| 作者单位： | 齐齐哈尔轻工学院，中国科学院大连化学物理研究所国家色谱研究分析中心 |
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| 摘 要： | 本文将径向扩散的毛细管质量平衡微分方程组进行Ｌａｐｌａｃｅ变换，并模仿Ｇｉｄｄｉｎｇｓ在色谱过程动力学研究时提出的假设，将模型适当简化，得到了流出曲线一级矩及二、三级中心矩的数学表达式。结果表明，不仅径向扩散对溶质的保留时间存在影响，而且径向扩散与其它传质过程偶联可以对色谱峰形产生综合影响。
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| 关 键 词： | 毛细管色谱，径向扩散，矩，流出曲线 |
Theoretical Investigation of Dyanamic Process in Capillary Column GC System |
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| Zhang Weibing, Yang Li, Xu Guowang, Zhang Yukui, Shi Jingjiang, Lu Peizhang.Theoretical Investigation of Dyanamic Process in Capillary Column GC System[J].Journal of Qiqihar University(Natural Science Edition),1996(3). |
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| Authors: | Zhang Weibing Yang Li Xu Guowang Zhang Yukui Shi Jingjiang Lu Peizhang |
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| Abstract: | Based on a mass balence equation. in this paper, the kinetic model of chromatography including influence of the radial diffusion on the mass traofer proceed is set up.Copied the hypothesis of Giddings, this model would be simplified. In this way, the expressions of the first moment, the second and the third central moment for this model are derived by Laplace transform in detail. The results show the radial diffussion effects not only the column efficiency. the peak spreading and the peak symmetry, but also the retention time. |
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| Keywords: | Capillary Column GC Elution profile Radial diffusion Moment |
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