amperometry

The opposite, i.e., amperometry, is also possible but not common.

Other classical electrophysiological techniques include single channel recording and amperometry.

The distinction between amperometry and voltammetry is mostly historic.

Not all of the experiments which were historically amperometry now fall under the domain of voltammetry.

This limits the precision of direct amperometry.

The averaging used in amperometry gives these methods greater precision than the many individual readings of (other) voltammetric techniques.

The chief advantage over direct amperometry is that the magnitude of the measured current is of interest only as an indicator.

The simplest form of amperometric detection is single-potential, or direct current (DC), amperometry.

Amperometry: Measures the current produced by the titration reaction as a result of the oxidation or reduction of the analyte.

Electric detection e.g. involving amperometry, voltametry, coulometry may be used directly or indirectly for many types of quantitative measurements.

Measurement of this current can be used to determine the concentration of the analyte directly; this is a form of amperometry.

Yet the terminology still results in confusion, for example, differential pulse voltammetry is also referred to as differential pulse amperometry.

Thus, factors that are of critical importance to quantitative amperometry, such as the surface area of the working electrode, completely disappear from amperometric titrations.

Unlike patch clamp techniques, the electrode used for amperometry is not inserted into or attached to the cell, but brought in close proximity of the cell.

Single-potential amperometry has been used to detect weak acid anions, such as cyanide and sulfide, which are problematic by conductometric methods.

Another, possibly more important advantage of amperometry over other detection methods for these and other ions, such as iodide, sulfite, and hydrazine, is specificity.

These electrodes are widely used mainly for voltammetric measurements; however, carbon paste-based sensors are also applicable in coulometry (both amperometry and potentiometry).

Extracellular methods involve single-unit recordings, extracellular field potentials, amperometry, or more recently, Multielectrode arrays which have been used to record and mimic signals.

One advantage that distinguishes amperometry from other forms of voltammetry is that in amperometry, the current readings are averaged (or summed) over time.

An extension of single-potential amperometry is pulsed amperometry, most commonly used for analytes that tend to foul electrodes.

Electrochemical or amperometric detection as it was first used in ion chromatography was single-potential or DC amperometry, useful for certain electrochemically active ions such as cyanide, sulfite, and iodide.

Another advancement, known as integrated amperometry, has increased the sensitivity for other electrochemically active species, such as amines and many compounds that contain reduced sulfur groups, that are sometimes weakly detected by PAD.

Sulzer and colleagues reported the first direct recordings of quantal neurotransmitter release from brain synapses using an electrochemistry technique known as amperometry using microelectrodes in an approach previously used by Mark Wightman, a chemist at the University of North Carolina, to measure release of adrenaline from adrenal chromaffin cells.