单词	polarography
释义	polarography /ˌpəʊləˈrɒɡrəfi / noun [mass noun] Chemistry A method of analysis in which a sample is subjected to electrolysis using a special electrode and a range of applied voltages, a plot of current against voltage showing steps corresponding to particular chemical species and proportional to their concentration.In electrochemical analysis by such methods as anodic stripping voltammetry, cyclic voltammetry, differential pulse polarography, and potentiometry, the anode always functions as the site of oxidation.... The states of the Mn complex reached after increasing periods of heating were investigated by oxygen polarography, EPR spectroscopy, and, in particular, by x-ray absorption spectroscopy. He was a physical chemist who won the Nobel Prize in 1959 for his discovery of polarography and its use in analytic chemistry. Derivatives polarographic /ˌpəʊlərəˈɡrafɪk/ adjective ... Most popular are the polarographic and the optical spectroscopic methods. A standard polarographic assay was used to measure oxygen consumption by the isolated mitochondria. The measurement of arterial PO 2 was revolutionized by the introduction of the polarographic oxygen electrode. Origin 1930s: from polarization (see polarize) + -graphy.
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