Polarography in solution of some problems in organic chemistry: recent applications |
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Authors: | Petr Zuman |
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Institution: | Department of Chemistry, Clarkson University, Potsdam, NY 13699-5810, USA |
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Abstract: | Applications of chromatographic and atomic absorption methods are compared with those of electroanalytical techniques. The limitations of electroanalytical procedures and their advantages, such as speed, sensitivity and speciation are discussed. Among applications of polarography and voltammetry to a solution of basic problems, attention has been paid to the possibility to distinguish the degree of conjugation (e.g. of compounds containing the grouping CNNC), to a contribution to understanding of solution chemistry of mitomycin C and to processes involved in the reduction of cephalosporins. Among practical applications, the possibility to analyze suspensions, which can be carried out without separation offers advantages. Examples are interactions in suspensions of bile salts in the presence of metal (II) ions, adsorptions of various pesticides and other toxic materials on lignin and the possibility to follow alkaline cleavage of lignin in buffers pH 8-12 at 25 °C. Most of these studies would not be possible to carry out using other techniques. |
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Keywords: | Polarography Voltammetry Azines CNNC bonds Mitomycin C Cephalosporins Suspensions Bile salts Heavy metal (II) ions Pesticides Lignin-adsorptions Lignin-alkaline cleavage |
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