Radioactive uranium measurement in vivo using a handheld interfaced analyzer.
A trace uranium (U) detection method was developed with a handheld voltammetric analyzer that was the size of a mobile phone, with working sensors made of simple graphite pencil electrode (PE). The optimum stripping voltammetric conditions were sought, and the following results were obtained: 0.0 to 0.08 ng/L working ranges and a statistically relative standard deviation of 1.78% (RSD; n=15) at a 10.0 microg/L U spike. The experiment accumulation time used was only 150 s. Under this condition, the diagnostic detection limit approached 0.007 ng/L. The method was applied to soil of a natural rock in a radioactive mineralogy site. Earthworms that resided at this site were assayed. The method was found to be applicable in biological diagnosis or in real-time in vivo survey.
Ly
Suw Young
SY
Biosensor Research Institute, Department of Chemical Engineering, Seoul National University of Technology, 172 Gongreung 2-Dong Nowon-gu, Seoul, South Korea 139-743. suwyoung@snut.ac.kr
Lee
Jin-Hui
JH
Jung
Dong Ho
DH
D000818:Animals; D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods; D004566:Electrodes; D004784:Environmental Monitoring / Q000295:instrumentation* / Q000379:methods; D009835:Oligochaeta; D012680:Sensitivity and Specificity; D014501:Uranium / Q000737:chemistry*; D014875:Water Pollutants, Radioactive / Q000737:chemistry*
D014875:Water Pollutants, Radioactive; D014501:Uranium