Title :
Investigation of Trace Cobalt in Glass Beads From an Archaeological Tomb
Author :
Suw Young Ly ; Kyung Lee ; Hyung Tae Kang ; Hai Soo Yoo
Author_Institution :
Biosensor Res. Inst., Seoul Nat. Univ. of Sci. & Technol., Seoul, South Korea
fDate :
6/1/2011 12:00:00 AM
Abstract :
To investigate ancient glass fragments, voltammetric analysis of trace cobalt (Co) was conducted using modified carbon nanotube sensors in cyclic voltammetry (CV), square wave (SW) stripping voltammetry, and chronoamperometry modes. Optimum SW conditions were obtained at working ranges of 40-460 ug/l Co (8 points), and a standard deviation of 0.2881% ( n=15) was observed at 20.0 ug/l Co ion at 100 s accumulation time. An analytical detection limit of 12.0 ug/l was likewise obtained. The results were applied to an ancient tomb glass dated 17th AD (ca. Joseon period; recently found in Sachang Dong, Cheongju City, South Korea). It was found that the sensor can be used in trace analysis of archeological materials.
Keywords :
archaeology; carbon nanotubes; chemical sensors; cobalt; glass; voltammetry (chemical analysis); ancient glass fragment investigation; ancient tomb glass; archaeological material; archaeological tomb; carbon nanotube sensor; chronoamperometry; cyclic voltammetry; glass beads; square wave stripping voltammetry; trace cobalt; voltammetric analysis; Cobalt; Electric potential; Electrodes; Equations; Glass; Sensors; Spectroscopy; Ancient tomb; cobalt (Co); glass; modified electrodes; multiwalled carbon nanotubes; voltammetry;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2010.2089617
