Exam 1 Flashcards
A measure of the ability of a method to discriminate between small differences in analytical concentration
Sensitivity
A measure of the systematic (determinate) error of an analytical method
Bias
What increases the efficiency of chromotography?
Using narrower columns
What column is appropriate to separate gas molecules in gas chromotography?
(PLOT) Porous-Layer Open Tubular Column
Which parameter is used to describe the strength of solvents in HPLC?
Polarity Index
What are the advantages of SPME used for sample introduction in GC?
- Inexpensive
- Can be used with GC and LC
- Fast
- No solvent needed
Flame Ionization Detector (FID)
Destructive
Use for analyzing organic compounds
Thermal Conductivity Detector (TCD)
Non-destructive
Use for analyzing both organic and inorganic compounds
Electron Capture Detector (ECD)
Non-destructive
Use for analyzing halogenated compounds
Mass Spectrometry Detector (MSD)
Destructive
Use for both identification an quantification
UV-Vis Absorption
Non-destructive
Solute property
Fluorescence
Non-destructive
Solute property
Coulometric Detector
Destructive
Bulk property
Refractive Index
Non-destructive
Bulk property
What would happen to a chromatogram if you replaced the C8 column with a C18 column?
The peaks would be separated better
