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Journal of the Korean Society for Environmental Analysis 2011;14(4):221-227.
Trace Assay of Cobalt Ion Using Implant and Patch-type Probe in a Living Cell
Abstract
In this article, an assay of trace cobalt ion was searched by using carbon nanotube paste electrode (PE). Under optimized analytical conditions, linear working ranges were from 70 to 700 ngL^(-1) measured with SW stripping voltammetry, from 70 to 910 mgL^(-1) with chronoamperometry. A relative standard deviation (RSD)of 20.0 mgL^(-1) Co (II) was of 0.12% SW (n = 15). Detection limit was attained as 7.93-ngL^(-1) (1.3×10^(-10) M Co(II). Here analytical application was performed to in vivo implanted living fish brain and a dissolved fish kidney tissue was also used for diagnostics. Moreover, the patch-type electrode system was applied to plant or leaf skin assay. The developed methods can be applied to in vivo direct assays for real time monitoring with optimum parameters.
Key Words: Cobalt (II), voltammetry, brain, carbon nanotube, kidney, plant, in vivo
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