Chapter 27: Q.27.16 (page 741)
What is the effect of stationary-phase film thickness on gas chromatograms?
The movement of the analytes depends upon the thickness of the column film.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
How do gas-liquid and gas-solid chromatography differ?
What is the difference between a concentration-sensitive and a mass-sensitive detector? Is the mass or concentration of the following detector sensitive?
() thermal conductivity.
() atomic emission,
() thermionic,
() electron captive,
() flame photometric,
() flame ionization.
The same polar compound is gas chromatographed on an column and then on a Carbowax (very polar column). How will vary between the two columns?
One method for quantitative determination of the concentration of constituents in a sample analyzed by is the area-normalization method. Here, complete elution of all of the sample constituents is necessary. The area of each peak is then measured and corrected for differences in detector response to the different eluates. This correction involves dividing the area by an empirically determined correction factor. The concentration of the analyte is found from the ratio of its corrected area to the total corrected area of all peaks. For a chromatogram containing three peaks, the relative areas were found to be , , and in the order of increasing retention time. Calculate the percentage of each compound if the relative detector responses were , , and , respectively
Define (a) retention volume, (b) corrected retention volume, (c) specific retention volume
What do you think about this solution?
We value your feedback to improve our textbook solutions.
