Van Deemter equation
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圖片全部顯示范第姆特方程- 維基百科,自由的百科全書范第姆特方程(英語:Van Deemter equation)在色譜學中是綜合考慮了分離過程中引起峰展寬的物理因素、動力學因素和熱力學因素後得到的單位柱長的總峰展寬與流動相流速的 ...What is the Van Deemter Equation? - Chromatography TodayVan Deemter Equation. The mechanism of band broadening and how it can be linked to HETP was discussed in a 1956 paper entitled 'Longitudinal diffusion and ... twGraphical Method for Choosing Optimized Conditions Given a Pump ...2016年11月16日 · What leaps out of the van Deemter plot is the presence of a minimum in theoretical plate height, the change in zone variance (in length units) ... tw | tw[PDF] MULTISCALE ANALYSIS OF TRANSPORT IN POROUS MEDIA2019年5月22日 · in the van Deemter equation is a combined contribution of eddy ... of the polymers and toluene are prepared at a concentration of 1 gL-1.How do small particle size columns increase sample throughput?Using the Van Deemter equation, it is clear that smaller LC column particle sizes yield better overall efficiencies, or less peak dispersion, across a much ... twThe New Potential of Monolithic Silica Columns in Fast Analytical ...2012年3月30日 · The speed (permeability) and mass transfer (van Deemter plot) properties of the first generation of monolithic column is compared to those ...The Promise of Small Particles | WatersThe van Deemter equation is comprised of three terms: The A term [eddy diffusion] is related primarily to the particle size of the packing material. Its value ... tw[PDF] A Numerical Model of Exchange Chromatography Through 3D ...2018年1月22日 · The table reports tw, the full width at half-maximum of the HD flow ... of the plots to the Van Deemter equation [32] are shown in Table 2, ...[PDF] MINI COLUMN FUNCTION AND PREDICTION TO LARGE SCALEThe resulting equation is called Generalized van Deemter equation (Figure 3). ... [63] Q.S. Yuan, A. Rosenfeld, T.W. Root, D.J. Klingenberg, E.N. Lightfoot ...
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基於熱力學的塔板理論
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理论板数,是一种机械工程学学科的一种名词词语。编辑摘要...理论板数.是指在一些分离操作中为完成某一指定分离要求所需理论塔板的数量。气液两相...WIKI热度.
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管柱的理論板數(number of theoretical plate) N,可用. 平板高度H及管柱填充之長度L來表示: ... 可用來評估層析管柱的平板高度H及理論平板數N。圖26-7.
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理論板數. 與待測檢品暨諸如流速、溫度、層析管中充. 填物之品質及其均勻度等層析條件均相關. 連。 分離率R 係指混合物中二成分波峰分離. 之程度,可由下式決定之:.
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理論板數是指在一些分離操作中為完成某一指定分離要求所需理論塔板的數量。氣液兩相在理論塔板上相遇時,因接觸良好,傳質充分,以至兩相在離開塔板時已達到平衡。