Answered: The figure below shows a typical…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

The figure below shows a typical separation of several fat-soluble vitamins by HPLC. The x-axis is retention time in minutes.

From the graph try to estimate retention times for peaks 2 and 3.
Retention time peak 2 =
Retention time peak 3 =
Assume that w1/2 is 0.15 minutes for peak 2 and 0.16 minutes for peak 3.
Assume that tm is 2.00 minutes.
How much time does gamma-tocopherol spend in the stationary phase?
From tr and w1/2 find N for the peak that elutes first.

From tr and w1/2 find the resolution of peaks 2 and 3

Calculate α for these peaks.

If the flow rate for the column is 1.2 mL/minute what is the retention volume for peak 4?

1.
alpha-Tocopherol
2. Menadione
3. gamma-Tocopherol
4. Chlolecalciferol
0
ساله
2
4
2
6
Min
8
4
10
12

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