マイクロコンピューター制御型電気分析システムによる位相弁別交流ポーラログラフィーとそのデータ処理

概要

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A phase-sensitive ac polarograph and its automatic data-processing system were constructed by incorporating a small-amplitude ac voltage source, an IR-drop compensator and a lock-in amplifier into the microcomputer-controlled electroanalytical system previously reported. The system control and data-processing programs were almost the same as those of differential pulse polarography, except that the system control program was used as Tast mode. The performance and applicability of the system were evaluated by comparing the result of data-processing by computer with that of manual treatment. The overall precision of the system for the determination of depolarizers {Pb(II), Gd(II), Zn(II), pyrazinamide etc.} in the range 0.02 mM to 0.5 mM was within ±2 % for peak current(Ip), ±1 % for peak potential(Ep), and ±2 % for half-peak width(W_p). The data-processing time was about 1〜3 min/peak. Characteristics of the fitting functions such as Gaussian, Lorenzian, and theoretical equations were also briefly examined.
社団法人日本分析化学会の論文
1984-08-05