Blood Gas/Electrolyte Instrumentation

Question 0

That branch of electrochemistry in which a fixed charge is applied to an electrochemical cell. The charge serves as the generating or excitation signal; the response is the current measured. Molecules are oxidized or reduced at the working electrode, whose potential is controlled relative to a reference electrode such as a saturated calomel electrode or Ag/AgCl electrode.

Answer 0

amerperometry

Question 1

an electrochemical technique related to amperometry in that a single potential is applied between two electrodes and current flows due to an oxidation or reduction reaction; all of the substance of interest is electrochemically reacted; the amount of electricity (in coulombs) produced by the process is quantitated.

Answer 1

coulometry

Question 2

an electrochemical device that consists of two electrodes that are connected by an electroyte solution that conducts ions (galvanic cell) or a device in which an external voltage is applied to a polarizable working electrode with the resulting cathodic or anodic current of the cell being monitored

Answer 2

electrochemical cell

Question 3

a half-cell that consists of a single metallic conductor in contact with an electrolyte solution; the indicator electrode is one half-cell and the reference electrode is the second half-cell

Answer 3

electrode

Question 4

an electrode that selectivity interacts with a single ionic species; the potential produced at the membrane/sample solution interface is proportional to the logarithm of the ionic activity or the concentration of the ion in question

Answer 4

ion-selective electrode

Question 5

the measurement of the potential difference between two electrodes measured at equilibrium and with no current. the potential generated is proportional to the activity (concentration) of the ion being measured.

Answer 5

potentiometry

Question 6

the measurement of current or amperage created as the voltage applied to an electrochemical cell is changed

Answer 6

voltametry

Question 7

describes the flow of electrons through a substance, such as a solution or a wire, and is measured in amperes, or coulombs of change per second

Answer 7

current

Question 8

the opposition of a substance to current flow measured in ohms

Answer 8

resistance

Question 9

properties that depend only on the NUMBER of particles in solution, not on the nature of those particles

Answer 9

colligative properties