A 20-m long GC column was operated at 80 °C. A small peak for air had...
A 20-m long GC column was operated at 80 °C. A small peak for air had a retention time of 419 s and a base peak width of 14.8 s. A peak for heptane had a retention time of 536 s and a base peak width of 19.4 s. What is the chromatographic resolution between the air and heptane peaks?
Homework Answers
Resolution (R) = 2(tR2 - tR1) / Wb1+ Wb2
Where,
tR1 = Retention time of air
tR2 = Retention time of heptane
Wb1 = Base peak width of air
Wb2 = Base peak width of heptane
Putting all the velues in the formula, we get
R = 2(536-419) / 14.8 + 19.4
R = 2(117) / 34.2
R = 6.84 Answer
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