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KMID : 1024520120210111333
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Journal of the Environmental Sciences
2012 Volume.21 No. 11 p.1333 ~ p.1338
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Electrochemical Detection of Trace Level Copper in in vivo Cell
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Lee Chang-Hyun
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Abstract
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In order to measure the minute amount of Cu(II) in our environment, cyclic voltammetry (CV) and square-wave stripping
voltammetry (SWSV) were performed for a trace copper assay using bismuth immobilized on a carbon nanotube paste
electrode. An analytical working range of 30 to 240 μg/L Cu(II) was obtained for CV and SWSV. The SWSV precision
obtained was 0.47 % (n = 15) RSD in 30.0 μg/L Cu(II). The detection limit obtained was 3.1 ng/L Cu(II) using SWSV, while
the CV yielded the nano-range detection limit through the pre-concentration step. By using this research method, Cu(II) value could be determined in the urine of human sample and in the brain of fish sample. This research can be effectively applied to other cases of measuring minute amount of Cu(II) in living organisms.
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KEYWORD
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Bismuth, Carbon, Paste electrode, Urine, Brain
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