디지털신호처리기법을 이용한 중금속이온농도 결정의 SWSV 신호분석 = The SWSV signal analysis for decision of heavy metal ion concentration using digital signal processing method

다국어 초록 (Multilingual Abstract)

Polarography is a subclass of voltammetry where the working electrode is a dropping
mercury electrode. More, I developed the experiment for raising up mercury electrode. In
Voltammetry, information about an analyte is obtained by measuring the current as the
potential is varied at oxidation-reduction reaction.
A plot of current vs. potential in a polarography experiment shows the current
oscillations correspoding to the drops of Hg falling from the capillary. The drops growth
causes capacitive and faradic current. These changing current effects combined with
experiments where the potential is continuously changed can result in noisy traces.
The raising up type improved upon the method of dropping in hardware. In reduction
of the noise, moving average smoothing method have been used. But the other procedure
is introduced based on Fourier transformation. So FFT and IFFT engine was implemented
and installed in my experiment. However, after experimentation, peak height as the
measuring parameter gave a good linear relationship to concentration. The resolution of
potential peaks of various kinds, using Zn and Cu as the example, was improved using
the smoothing method.

참고문헌 (Reference)

1 이채욱, "최신 디지털 신호처리" 북스힐 1999

2 임제탁, "이산신호처리" 대영사 1998

3 이재춘, "유리탄소전극과 적상수은전극을 이용한 미량원소측정시스템과그의 전자시스템 및 제어방법, 특허번호 10-0485988"

4 C. W. K. Chow, "Signal enhancement of potentiometric stripping analysis using digital signal processing" 307 : 15-26, 1995

5 A. Savitzky, "Signal enhancement of potentiometric stripping analysis" 36 : 15-26, 1964

6 Bard, Allen J., "Electrochemical Methods, Fundamentals and applications(2 ed)" Wiley 2000