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KMID : 1059519930370110943
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Journal of the Korean Chemical Society
1993 Volume.37 No. 11 p.943 ~ p.950
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Determination of Trace Level Germanium(IV) by Square Wave Anodic Stripping Voltammetry
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Kim Il-Kwang
Chun Hyun-Ja
Jeong Seung-Il
Park Sung-Woo
You Jae-Hoon
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Abstract
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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.
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