53 - Chemical Analysis Flashcards
1
Q
What is chromatography?
A
Separating mixtures with a solvent
2
Q
What might chromatography be used for?
A
Separating ink
Separating dye
3
Q
Why are machines good for chemical analysis?
A
Sensitive to small amounts of a substance
Fast
Accurate
4
Q
What is gas chromatography for?
A
Separating and identifying substances in compounds
5
Q
How does gas chromatography work?
A
Gas carries substances past solid material
Substances travel at different speeds and are separated
Recorder draws peaks to show amount of compounds
6
Q
What is retention time?
A
The amount of time taken for a substance to reach the detector in GC-MS
7
Q
What is a mass spectrometer?
A
A machine that identifies substances leaving GC column
8
Q
What are GC-MS results drawn onto?
A
A gas chromatograph
