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EnglishThe features of a microprocessor-based data acquisition and control unit, dedicated to electrochemical experiments, are described. The menu-selectable software allows smoothing, baseline drawing and subtraction as well as differentiation, even with signal amplitudes of some tenths of nA at signal/noise ratios lower than one, without forcing the data to follow theoretical models. Concentrations of cadmium ion as low as 2 × 10 -7, 5 × 10 -8 and 5 × 10 -9 M can be measured, within 10% accuracy and precision, by using sampled d.c. polarography, staircase voltammetry and fast-sweep differential pulse voltammetry, respectively; this is a consistent improvement on literature data. Depending on the electrochemical technique used, the most significant signal parameters, including derivatives, are measured automatically, listed and used in the decision-making process for chemical characterization.
| Autori interni: | ||
| Autori: | FANELLI N; FUOCO R; GUIDARINI D; PAPOFF P | |
| Titolo: | PERFORMANCE OF A GENERAL-PURPOSE ELECTROCHEMICAL INSTRUMENT AIDED BY A STAND-ALONE MICROCOMPUTER SYSTEM IN TRACE ANALYSIS | |
| Anno del prodotto: | 1986 | |
| Digital Object Identifier (DOI): | 10.1016/0003-2670(86)80030-7 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/11568/12148
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