Detectors
Injections
Day 2
Day 3
Day 1
100
The intensity of the light in these detecors is proportional to the mass of Sulfur or Nitrogen
Sulfur and Nitrogen Chemiluminescene Detector
100
This injection technique is when air is taken up, then solvent, then air, then sample, then air
sandwich injection
100
Name all 4 carrier gases in gas chromatography
Air, Nitrogen, hydrogen, and helium
100
Measures the ability of a substance to transport heat from a hot region to a cold region
Thermal Conductivity Detector
100
Offer higher resolution with shorter analysis time and a greater sensitivity than packed column
Open Tubular Column
200
1 in 100000 carbon atoms will produce a CHO+ ion and an electron in the flame in this detector
Flame Ionization Detector
200
For dirty samples, __________ injection is used and a packing material can be placed inside the liner to adsorb undesirable components of the sample.
Split Injection
200
Temperature programming is used to get good peaks with what type of compounds?
Heavier compounds
200
Extracts compounds from liquids, air, or even sludge without using any solvent
Solid-Phase Micro-extraction
200
Provide greater sample capacity while giving broader peaks and longer retention time
Packed Column
300
When analytes with a high electron affinity enter the detector the capture some electrons and decrease the conductivity of the plasma in this detector
Electron Capture Detector
300
In this injection about 80% of the sample goes to the column and little fractionation occurs from the injection
splitless injection
300
This technique is used to get good resolution with heavier compounds that can't tolerate high temperatures
Pressure Programming
300
A method for removing volatile analytes from liquids or solids, concentrating the analytes, and introducing them into a gas chromatograph.
Purge and Trap
300
Name the three types of Open tubular Columns
Wall Coated Support Coated Porous Layer
400
The eluate is passed through a flame and the excited atoms will give out a very specific light which is detected in this detector
Flame Photometric Detector
400
This injection is used for samples that decompose above boiling points
On-Column Injections
400
The purpose of this piece is to accumulate nonvolatile substances that would otherwise contaminate the chromatography column and degrade its performance
Guard Columns
400
Determining the quantity of a component from gas chromatography
Quantitative Analysis (why is this 400 points?)
400
When increasing retention time and resolution of volatile analytes, what is also being increased?
Thickness of Stationary Phase
500
This detector is used to measure a lot of drugs, pesticide and herbicide chemicals
Nitrogen-Phosphorus Detector
500
The solutes are trapped in the solvent in a narrow band at the start of the column in this splitless injection technique
solvent trapping
500
The purpose of this piece is to improve peak shapes by separating volatile solvent from less volatile solutes prior to chromatography
Retention Gaps
500
For releasing volatile compounds from solid samples
Thermal Desorption
500
Relates the retention time of a solute to the retention times of linear alkanes
Retention Index