Clin Chem CH 5 Review
Reverse-phase liquid chromatography refers to:
A polar mobile phase and nonpolar stationary phase
What is beer's law?
A=Ebc
Which electrochemical assay measures current at fixed potential?
Amperometry
Which of the following techniques has the highest potential sensitivity?
Chemiluminescence
What is the purpose of the chopper in an atomic absorption spectrophotometry?
Correct for the amount of light emitted by the flame
Which of the following is false concerning the principles of point-of-care testing devices?
Devices do not require quality control testing
Which of the following refers to the movement of buffer ions and solvent relative to a fixed support?
Electroendosmosis
Which of the following is true concerning fluorometry?
Fluorescence is an inherently more sensitive technique than absorption
Which is most accurate concerning ISEs?
Gas specific membranes are necessary for oxygen and carbon dioxide electrodes
Which of the following light sources is used in atomic absorption spectrophotometry?
Hollow-cathode lamp
Which of the following is not an object of proteomics research?
Identify specific gene mutations
Which of the following regarding MS is false?
Mass spectrometers can be used to sequence DNA
Which of the following correctly ranks electromagnetic radiation from low energy to high energy?
Microwaves, infrared, visible, UV, X-rays, gamma, cosmic
Which of the following best describes the process of fluorescence?
Molecules emit a photon at lower energy when excited electrons return to the ground state
Which of the following is not an advantage of CE?
Multiple samples can be assayed simultaneously on one injection
Which is the most sensitive detector for spectrophotometry?
Photomultiplier
Which of the following procedures is not currently or routinely used for point-of-care testing devices?
Polymerase chain reaction
Which of the following is not necessary for obtaining the spectrum of a compound from 190 to 500 nm?
Tungsten light source
Tandem mass spectrometers:
are 2 mass spectrometers placed in series with each other
Stray light in a spectrophotometer places limits on:
upper range of linearity
