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Unformatted text preview: Rs )1 = ( tR )2 ( Rs )2 2 ( t R )2 = 14.1 ( 0.717 ) = ( tR )2 (1.5)2 14.1 ⎛ ( 0.717 ) ⎜ ⎜ (1.5 )2 ⎝ 2 ⎞ ⎟ ⎟ ⎠ 2 = 61.7 or 62 minutes 4. (6 points, Modified from Skoog 27‐3) What is meant by temperature programming in GC? Why is it frequently used? What general chromatographic problem does it help solve? Temperature programming involves increasing the temperature of a GC column as a function of time. This technique is particularly useful for samples that contain constituents whose boiling points differ significantly. Low boiling point constituents are separated initially at temperatures that provide good resolution. As the separation proceeds, the col...
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