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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 37, Number 11
JKCSEZ 37(11)
October 20, 1993 

 
Title
Determination of Trace Level Germanium(Ⅳ) by Square Wave Anodic Stripping Voltammetry

네모파 산화전극 벗김 전압전류법을 이용한 게르마늄의 미량분석
Author
Il Kwang Kim, Hyun Ja Chun, Seung Il Jeong, Sung Woo Park, Jae Hoon You

김일광, 천현자, 정승일, 박성우, 유재훈
Keywords
Abstract
8.0 × 10-2 M catechol이 들어있는 5.0 × 10-2 M 과염소산 지지전해질 용액속에서 네모파 산하전극벗김 전압전류법으로 게르마늄의 미량분석을 조사하였다. ppb 수준의 분석에서는 석출시간 120초, 석출전위 -0.9 volts, 주파수 100Hz일 때 가장 적합하였다. 구리와 납, 실리콘 같은 금속이온이 상당량 존재하여도 공존이온이 영향을 받지 않고 게르마늄의 분석이 가능하였다. 검량선은 0.40 ppb 에서 2.0 ppm 범위까지 양호한 직선성을 보였으며, 검출한계는 0.080 ppb 이였다. 이 방법은 분석시간이 짧고 감도가 좋기 때문에 미량 게르마늄 분석에 유용하였다.

The determination of trace level germanium in 5.0 × 10-2 M perchloric acid supporting electrolyte solution containing 8.0 × 10-2 M catechol has been investigated by the square wave anodic stripping voltammetry. The optimum conditions in determination of germanium were as follows: deposition time; 120 sec, deposition potential; -0.9 volts vs. Ag/AgCl and frequency; 100 Hz. The determination of germanium was possible regardless of coexistent ion such as copper, lead and silicon. Calibration curve was shown a good linearlity in the range of 0.40 ppb to 2.0 ppm and the detection limit was 0.080 ppb. This method was useful for trace level germanium due to the short analysis time and higher sensitivity.

Page
943 - 950
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