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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 45, Number 4
JKCSEZ 45(4)
August 20, 2001 

Determination of Bio-Accumulated Trace Mercury by Anodic Stripping Square Wave Voltammetry at Glassy Carbon Electrode

유리질 탄소전극에서 양극벗김 네모파 전압-전류법에 의한 생체내 미량 수은의 정량
Ilkwang Kim, Hyunja Chun, Seungil Jeong, Seunghwa Beck, Wansoo Han

김일광, 천현자, 정승일, 백승화, 한원수
생체시료에 함유된 미량수은을 유리질 탄소전극을 사용하는 양극 벗김 네모파 전압-전류법으로 정량하였다. 생체시료는 HNO3/H2SO4 산혼합용액으로 삭히고, KMnO4를 가하여 산화시켰다. 수은의 검출한계는 석출전위, 시간, pH, 그리고 용액을 저어주는 속도 등에 크게 영향을 받았다. 1.0 volts vs. Ag/AgCl에서 400rpm으로 저어주면서 240 sec 동안 석출시켰을 경우, 검출한계는 0.5 ppb 이하였다. 흰쥐에 대한 수은의 생체 축적량은 신장과 간에서 높았고, 뇌에서는 매우 낮았다.

The trace-level mercury in bio-materials has been determinated by the anodic stripping square wave voltammetry (ASSWV)-technique at glassy carbon electrode. Prior to the analysis, the bio-materials were digested with HNO3/H2SO4 mixture and KMnO4 was added to complete an oxidation process of the mixture. The detection limit of the mercury varied greatly with deposition time, deposition potential, pH and stirring rate. When the deposition was carried out for 240 sec on 400 rpm stirring at -1.0 volts vs. Ag/AgCl, the detection limit was below 0.5 ppb (2.5×10-9 M). The accumulated mercury was high in the kidney and liver, and low in the brain according to the determination of mercury accumulation for a white rat by this method.

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