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네모파 전압전류법에 의한 텔루륨(Ⅳ) 정량

  • Seo, Mu Yeol;Seo, Mu Yeol;Eom, Tae Yun;Choe, In Gyu
    • Journal of the Korean Chemical Society
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    • v.38 no.7
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    • pp.496-501
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    • 1994
  • Square-wave voltammetric behavior for tellurium(Ⅳ) was studied in hydrochloric acid medium using a hanging mercury drop electrode. The reduction of tellurium(Ⅳ) was found to be irreversible and catalized by acid. Analytical conditions for the determination of tellurium(Ⅳ) and effects of diverse ions were also investigated. The detection limit of tellurium(Ⅳ) was $4.2\;ppb (3.3{\tiems}10^{-8}M)$. The amount of tellurium(Ⅳ) on the electrode surface was ${\Gamma}=(7.2{\pm}1.4){\times}10^{-11}\;mol\;cm^{-2}$.

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