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Ly S.Y.,Dong - A University | Yoo H.-S.,Korea Ocean Research and Development Institute | Kim N.J.,Sahmyook University | Lee J.H.,Korea University | And 3 more authors.
Environmental Toxicology and Pharmacology | Year: 2011

A voltametric diagnosis of trace lead was performed using macro type combination sensors of fluorine-doped graphite pencil electrodes (FPE). Two pencils were used as the reference and auxiliary instead of expensive Ag/AgCl standards and Pt counters. Under optimized conditions, a square wave (SW) stripping working curve was attained at 10-70. mg/L and a micro range of 10-70. μg/L. The developed sensor was not only inexpensive but also had a fast (90-s) accumulation time. An analytical detection limit of 10. μg/L was obtained. The results were applied to an ex vivo tissue and an artificial turf. © 2010 Elsevier B.V.

Ly S.Y.,Biosensor Research Institute in Seoul National University of Technology | Yoo H.-S.,Korea Ocean Research and Development Institute | Jung M.,Advenced Scientific Experiment Group in Daejin High School | Ko K.H.,Advenced Scientific Experiment Group in Daejin High School | And 3 more authors.
Toxicological Research | Year: 2013

The analytical in vivo chromium ion was searched for using a voltammetric hollow-fiber dialysis sensor via square wave stripping voltammetry (SW), cyclic voltammetry (CV), and chronoamperometry. Under optimum parameters, the analytical results indicated linear working ranges of 50~400 mg/l CV and 10~80 μg/l SW within a 30-sec accumulation time. The analytical detection limit (S/N) was 6.0 μg/l. The developed method can be applied to in vivo tissues and in ex vivo toxicity assay, as well as to other materials that require chromium analysis.

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