Laminar dispersion in flow-injection analysis |
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| Authors: | Vanderslice J T Stewart K K Rosenfeld A G Higgs D J |
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| Affiliation: | Nutrient Composition Laboratory, Nutrition Institute, Human Nutrition Center, Science and Education Administration, United States Department of Agriculture, Beltsville, MD 20705, U.S.A. |
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| Abstract: | Simple expressions are given for the dispersion and the travel times of samples in simple flow-injection analysis systems. The sum of these two quantities is the total residence time of the sample in the system. The expressions are based on numerical solutions of the diffusion-convection equation. Preliminary experiments are in agreement with the derived simple expressions, as are peak curve shapes. Diffusion coefficients can be obtained in a straightforward manner. |
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