Liquid Chromatography

2. The fluorescence detector detects fluorescence at an angle ____ to the incident light.
3. The smaller the packing particles in an HPLC column, the ____ the retention time.
4. Normal phase LC uses a ____ stationary phase.
6. Mobile phase pretreatment includes purgin, filtration, and ____.
7. ____ is the most common functional group in LC stationary phase. It's also known as a C-18 column.
9. Refractive index detector is a ____ detector for LC.
10. ____ with a fluorophore is necessary for those compounds that don't naturally fluoresce when using a fluorescence detector.
13. The refractive index detector requires a ____ solvent.
16. ____ has an intermediate polarity, and so can be used as both a polar or nonpolar phase for LC.
17. The ____ detector is the most sensitive.
18. Thin Layer Chromatography is sometimes called ____ chromatography.
20. Mobile phase transportation in HPLC relies on a ____ pump.

1. A polarity of a mixture of solvents for the mobile phase can be calculated to provide the ____ ____ (2 words).
5. The retardation factor is always ____ one (2 words).
8. Light that is measured at the direction of the incident light in UV-Vis absorbance detector.
11. The smaller the packing particles in an HPLC column, the ____ the plate number.
12. The ____ electrode in the electrochemical detector is most important.
14. The electrochemical detector uses three electrodes: reference, working, and ____.
15. Reversed-phase LC uses a ____ stationary phase.
19. Absorbance is _____ to sample concentration.