The following data were obtained during gas-liquid chromatography of a mixture of two volatile constituents of a pesticide residue in cereal crops. Which of the following statements about the experiment is TRUE? Component Retention time (min) Peak width at base (min) 5.80 0.85 Y 6.75 0.75 There was overlap between the X and Y peaks. O The theoretical plate number is higher for component X than for component Y. O It is not possible to say for which component the HETP was lower because the column length is not stated. O Inclusion of an internal standard would have enabled quantitative analysis of the mixture. O The resolution for the two components exceeds 1.0.
The following data were obtained during gas-liquid chromatography of a mixture of two volatile constituents of a pesticide residue in cereal crops. Which of the following statements about the experiment is TRUE? Component Retention time (min) Peak width at base (min) 5.80 0.85 Y 6.75 0.75 There was overlap between the X and Y peaks. O The theoretical plate number is higher for component X than for component Y. O It is not possible to say for which component the HETP was lower because the column length is not stated. O Inclusion of an internal standard would have enabled quantitative analysis of the mixture. O The resolution for the two components exceeds 1.0.
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter26: An Introduction To Chromatographic Separations
Section: Chapter Questions
Problem 26.14QAP
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Transcribed Image Text:The following data were obtained during gas-liquid chromatography of a mixture of two
volatile constituents of a pesticide residue in cereal crops.
Which of the following statements about the experiment is TRUE? *
Component
Retention time (min) Peak width at base (min)
5.80
0.85
Y
6.75
0.75
O There was overlap between the X and Y peaks.
O The theoretical plate number is higher for component X than for component Y.
It is not possible to say for which component the HETP was lower because the column length is not stated.
Inclusion of an internal standard would have enabled quantitative analysis of the mixture.
The resolution for the two components exceeds 1.0.
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