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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 38, Number 7
JKCSEZ 38(7)
February 20, 1994 
 
Title
 Determination of Tellurium(Ⅳ) by Square-Wave Voltammetry

네모파 전압전류법에 의한 텔루륨(Ⅳ) 정량
Author
 Se Chul Sohn, Moo Yul suh, Tae Yoon Eom, In Kyu Choi

손세철, 서무연, 엄태윤, 최인규
Keywords
Abstract
 Tellurium(Ⅳ)에 대한 네모파 전압전류법적 연구를 HMDE를 사용하여 염산 용액에서 수행하였다. 염산 용액중에서 Tellurium(Ⅳ)의 환원반응은 산에 의한 촉매반응의 특징을 나타내는 비가역적인 과정으로 진행됨을 알 수 있었다. 본 연구에서는 또한 네모파 전압전류법에 의한 Tellurium(Ⅳ)의 분석 조건 및 방해이온들에 대하여 검토하였다. 이 방법에 의한 Tellurium(Ⅳ)의 검출한계는 4.2 ppb (3.3×10-8 M)이었으며, 전극표면에서의 4.2 Tellurium(Ⅳ)의 양은 Γ= (7.2±1.4) ×10-11 mol cm-2이었다.

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 (3.3×10-8 M). The amount of tellurium(Ⅳ) on the electrode surface was Γ= (7.2±1.4) ×10-11 mol cm-2.
Page
 496 - 501
Full Text
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