Polarograph - Wikipedia
A Polarograph is a chemical analysis instrument used to record automatic voltage-intensity curves.
Polarography - Wikipedia
Polarography is an electrochemical voltammetric technique that employs (dropping or static) mercury drop as a working electrode. In its most simple form polarography can be used to determine concentrations of electroactive species in liquids by measuring their mass-transport limiting currents.
Polarography: Definition, Types, Advantages, Disadvantages
2023年5月13日 · Polarography is a voltammetric technique that involves the oxidation (loss of electrons) or reduction (gain of electrons) of chemical species (ions or molecules) at the surface of a dropping mercury electrode (DME) at an applied potential.
Electrochemistry Encyclopedia -- Polarography) - Electrochemical …
Simple principle of polarography is the study of solutions or of electrode processes by means of electrolysis with two electrodes, one polarizable and one unpolarizable, the former formed by mercury regularly dropping from a capillary tube.
Polarography - an overview | ScienceDirect Topics
Polarography is a voltammetric technique in which chemical species (ions or molecules) undergo oxidation (lose electrons) or reduction (gain electrons) at the surface of a dropping mercury electrode (DME) at an applied potential. Polarography only applies to the DME.
Polarography | Electrochemical Analysis, Voltammetry
Polarography, in analytic chemistry, an electrochemical method of analyzing solutions of reducible or oxidizable substances. It was invented by a Czech chemist, Jaroslav Heyrovský, in 1922. In general, polarography is a technique in which the electric potential (or voltage) is …
25.5: Polarography - Chemistry LibreTexts
2024年1月24日 · The first important voltammetric technique to be developed—polarography—uses the dropping mercury (DME) electrode as the working electrode (see Figure 25.2.2 for a schematic diagram of the DME as well as two other types of Hg electrodes). In polarography, as in linear sweep voltammetry, …
Electroanalytical instrumentation—how it all started: history of ...
2023年2月15日 · This review is a historic collection of old electrochemical and electroanalytical instruments, mostly concentrated on polarographs, potentiostats, pH meters, and titrators designed and commercially available from the 1920s to 1970s. The review briefly explains their operation and shows their photos.
Polarography - SpringerLink
Polarography, one of the most widespread electrochemical techniques both for the study of electrochemical processes and for analytical applications, was introduced in 1922 by Heyrovský.
Polarography - SpringerLink
2014年1月1日 · In its primary meaning, polarography is the method of potential-controlled electrolysis with dropping mercury electrode, usually of drop time 3–5 s, as working electrode. The physicochemical properties of mercury are specially advantageous in electrochemistry.