(a) An electrophoresis channel etched into a glass plate has a rectangular 12 50 m cross...

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(a) An electrophoresis channel etched into a glass plate has a rectangular 12 × 50 μm cross section. How long (mm) is the sample zone for a 100-pL sample?
(b) If sample travels 24 mm in 8 s to reach the detector, what is the standard deviation in bandwidth contributed by the finite length of the injection zone? (Hint: See Equation 22-32.)
(c) If the diffusion coefficient of a solute is 1.0 108 m2/s, what is the diffusional contribution (standard deviation) to band broadening?
(d) What is the expected total bandwidth at the baseline (w  4σ)?
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