polarography

American  

[poh-luh-rog-ruh-fee] / ˌpoʊ ləˈrɒg rə fi /

noun

1. Chemistry.  the use of a Polarograph to perform qualitative or quantitative analyses.

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polarography British  

/ ˌpəʊləˈrɒɡrəfɪ, ˌpəʊlərəˈɡræfɪk /

noun

1. a technique for analysing and studying ions in solution by using an electrolytic cell with a very small cathode and obtaining a graph ( polarogram ) of the current against the potential to determine the concentration and nature of the ions. Because the cathode is small, polarization occurs and each type of anion is discharged at a different potential. The apparatus ( polarograph ) usually employs a dropping-mercury cathode

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Other Word Forms

• polarographic adjective

Etymology

Origin of polarography

First recorded in 1935–40; Polaro(graph) + -graphy