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KMID : 0379520080240030227
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한국독성학회지
2008 Volume.24 No. 3 p.227 ~ p.233
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Analysis of Lead Ions in a Waste Solution Using Infrared Photo-Diode Electrode
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Ly Suw-Young
Kwak Kyu-Ju
Ko Jun-Seok
Lee Jeong-Jae
Cho Jin-Hee
Kim Ki-Hong
Kim Min-Seok
Lee So-Jung
Lee Hyun-Kuy
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Abstract
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To detect lead ions using electrochemical voltammetric analysis, Infrared Photo-Diode Electrode (IPDE) was applied via cyclic and square wave stripping voltammetry. Lead ions were deposited at 0.5 V (versus Ag/AgCl) accumulation potential. Instrumental measurements systems were made based on a simple and compact detection system. The stripping voltammetric and cyclic voltammetric optimal parameters were searched. The results yielded a cyclic range of 40~240 ㎎l-1 Pb(Ⅱ) and a square wave stripping working range of 0.5~5.00 ㎎l-1 Pb(Ⅱ). The relative standard deviation at 2 and 4 ㎎l-1 Pb(Ⅱ) was 0.04% and 0.02% (n = 15), respectively, using the stripping voltammetric conditions. The detection limit was found to be 0.05 ㎎l-1 with a 40 sec preconcentration time. Analytical interference ions were also evaluated. The proposed method was applied to determine lead ions in various samples.
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KEYWORD
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Infrared photo diode electrode, Voltammetry, Lead
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