Chromatogram peak detection - bunching vs others?

1. What is bunching factor in chromatography?
2. Why is peak area more accurate?
3. What affects peak height in gas chromatography?
4. What is skim integration?

What is bunching factor in chromatography?

bunching factor. Specifies the liftoff and touchdown values (minimum rate of change of the detector signal) for peak detection.

Why is peak area more accurate?

The repeatability of peak area is much better than that of peak height. The effect of column temperature on peak area is negligible, while it is very important on peak height, because the retention time and the band width increase rapidly with decreasing temperature.

What affects peak height in gas chromatography?

The height of each peak is in proportion to the amount of the particular component present in the sample mixture injected into the chromatograph. The chromatogram shown above is an ideal one showing symmetrical shaped peaks rising above a stable horizontal baseline.

What is skim integration?

The skim integration method normally is applied in situations in which a small peak is resolved partially from a larger peak. Often called a "shoulder" peak, the smaller peak is integrated so that the integrator attempts to follow the baseline produced by the larger peak.