H ABu

A plot of H versus u is shown in Figure 4. The relationship highlights the importance of using the correct flow rate for minimum H values (maximum

Time

Figure 3 Isotherm shape and its effect on peak shape and retention times.

Time

Figure 3 Isotherm shape and its effect on peak shape and retention times.

Figure 4 The 'van Deemter' plot and determination of the constants A, B and Cs.

continually meeting new stationary phase into which it dissolves. To maintain the equilibrium, solute will move from the trailing edge of the band, out of the stationary phase back into the mobile phase. Because this process is not instantaneous, the band is broadened. A fast-moving mobile phase sweeps the zone more rapidly through the column and accentuates the band broadening, as does a greater film thickness (df) of stationary phase. A higher rate of solute diffusion in the stationary phase (DS) will decrease the band broadening, so that:

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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