Polarography - Wikipedia
网页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.
极谱法 - 百度百科
网页极谱法（polarography）通过测定电解过程中所得到的极化电极的电流-电位（或电位-时间）曲线来确定溶液中被测物质浓度的一类电化学分析方法。. 于1922年由 捷克 化学家J.海洛夫斯基建立。. 极谱法和 伏安法 的区别在于 极化电极 的不同。. 极谱法是使用滴汞 ...
Polarography | Electrochemical Analysis, Voltammetry
网页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 varied in a regular manner between two sets of electrodes ...
Polarograph - Wikipedia
网页A Polarograph is a chemical analysis instrument used to record automatic voltage-intensity curves. The Polarograph uses an electrolytic cell consisting of an electrode or microelectrode small area, generally of the mercury drop type, which is a very fine capillary tube through which mercury flows slowly, which comes in the form of small ...
25.5: Polarography - Chemistry LibreTexts
网页2024年1月24日 · Normal pulse polarography (Figure 25.5.2 a), for example, uses a series of potential pulses characterized by a cycle of time τ, a pulse-time of tp, a pulse potential of ΔEp, and a scan rate of ΔE / Δt. Typical experimental conditions for normal pulse polarography are τ ≈ 1 s, tp ≈ 50 ms, and ΔE / Δt ≈ 2 mV/s.
Polarography with non-mercury electrodes: A review
网页2022年3月22日 · “Polarography, also called polarographic analysis or voltammetry in analytical chemistry, is an electrochemical method of analyzing solutions of reducible or oxidizable substances. In general, polarography is a technique in which the electric potential (or voltage) is varied in a regular way between two sets of electrodes (indicatory and ...
Polarography - SpringerLink
网页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
网页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.
Polarography—past, present, and future | Journal of Solid State ...
网页2010年12月16日 · Polarography was first developed as an automated method of voltage-controlled electrolysis with dropping mercury electrode. The spontaneously renewed pure electrode surface provided reproducible electrochemical results which enabled scientists to work out adequate theory and rich analytical applications.
Polarography - an overview | ScienceDirect Topics
网页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.
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