Signals and Statistics
Before signals are converted to the digital realm, they are termed this.
What is analog?
This source was invented by Nick Holonyak while working at GE in 1962. He was then hired by UIUC. He also grew up in Glen Carbon.
What is the LED?
Capillary electrophoresis and liquid chromatography both exist as solution phase separation methods, however CE can only separate this type of chemical species.
What is charged?
Why is electron impact described as hard ionization?
What is that it produces primarily fragments?
During SEM, this type of spectroscopy can be performed yielding information about a large volume beneath the incident area and characteristic transitions allowing for the identification of elements.
What is X-Ray?
Liquid nitrogen can be used to cool detectors to achieve this.
What is reduced noise?
This would be increased in order to increase the resolving power of a monochrometer.
What is slit width?
The stationary phase in a normal phase HPLC separation would be characterized as this.
What is non-polar?
This is the most common ionization source for ATOMIC mass spectrometry.
What is ICP?
Auger electrons are generated using this instrument.
What is SEM?
The sensitivity of a method is related directly to this.
What is the slope?
What is a "fricken laser"?
As the size of packing material is decrease, the back pressure increases. Name two other characteristics that increase.
What are separation efficiency, surface area, number of plates?
What figure of merit makes MS a preferred technique over most others even when LODs may be equivalent?
What is selectivity?
This type of surface characterization relies heavily on the use of a laser.
What is AFM?
Calibrations can be difficult in complex matrices therefore this may be employed.
What is standard addition?
What is the advantage of the double-beam spectrophotometer?
What is having continuous reference (and blank) detection?
If a student switched their polar and nonpolar solvents while performing RP HPLC, what would happen?
What is everything would elute very quickly?
Many different MS ionization techniques are capable of producing images. Name three.
What are MALDI, DESI, SIMS, LAESI, MALDIESI?
Name two types of surface characterization techniques discussed in class that depend on having accurate control of the instrument's tip.
What are STM and AFM?
The word specificity is relegated to what.
What is biochemical interactions (biological analysis)?
In theory, what is the most sensitive atomic spectroscopy technique based on population statistics (Boltzman)?
What is Atomic Emission?
This would be a similar concern between long HPLC columns and columns using submicron particles.
What is high back pressure?
Name one type of MS that is available at SIUE.
What is LC-MS or GC-MS?
This type of surface characterization can be performed on non-conducting samples.
What is AFM?