Presentation is loading. Please wait.

Presentation is loading. Please wait.

Lecture 18 High Preformance Liquid Chromatography I.

Similar presentations


Presentation on theme: "Lecture 18 High Preformance Liquid Chromatography I."— Presentation transcript:

1 Lecture 18 High Preformance Liquid Chromatography I

2 Column Injector Detector Chromatograph Data Processing

3

4 Zone broadening: The van Deemter equation H - plate height u - flow rate

5

6 Stationary phase in HPLC Chemically inert Non-soluble in any imaginable mobile phase Thermal and chemical stability Appropriate physical sorption of analyte Shape: Uniform spherical particles

7

8 150 m 2 /g 300 m 2 /g

9

10 Polar phase Nonpolar phase

11

12

13

14

15

16

17 Percentage of solvents having the same eluent strength

18 B - acetonitrile CH 3 CN

19 Width W is proportional to retention time t r ‘general chromatography problem’

20

21 Solution of GNP: gradient

22


Download ppt "Lecture 18 High Preformance Liquid Chromatography I."

Similar presentations


Ads by Google