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首页> 美国政府科技报告 >Effects of extracolumn convolution on preparative chromatographic peak shapes.
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Effects of extracolumn convolution on preparative chromatographic peak shapes.

机译：柱外卷积对制备色谱峰形的影响。

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The effect of extracolumn components on preparative (nonlinear) chromatographic peak shapes are investigated by convoluting column inlet and outlet profiles of chromatographic simulations with Gaussian and exponential spreading functions. Broadening of the inlet profile serves mainly to retard elution of the peaks. The chromatogram base line width is very sensitive to small amounts of broadening at the outlet (detector). While linear chromatography is modelled by simple shift-invariant convolution, nonlinear chromatography requires the more complex shift-invariant convolution model. This removes the property of variance additivity familiar in linear chromatography. The relative utilities of three measures of preparative chromatographic peak width are tested using the convoluted peak shapes obtained. 50 refs., 11 figs.

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