Radioactive uranium measurement in vivo using a handheld interfaced analyzer

Abstract

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.

Exploration of the Feeling Sensing Analysis via Electrochemical In-Vitro Carbon Nano Tube Paste Tattoo Working Sensor

“…Furthermore, electrochemicalcircuit systems have long been recognized as simple [13], fast-response, and powerful tools for signal amplification [14], and accumulated stripping voltammetric methods are very sensitive for nano-or pico-range detection [16,17]. As such, in this study, highly sensitive [18,19] neuro detection was optimized by a handheld voltammetric circuit. Added to this, diagnostic application was performed to feeling-sense assay for human psychological neuro signals and animum brain activity.…”

Toxicological Investigation of Radioactive Uranium in Seawater

“…In contrast, the voltammetric methods are simple (Ly and Kim, 2009) and fast (Ly et al ., 2011) . Thus, more specifications of such methods have been sought for the aforementioned purpose, such as bismuth film electrode (Lin et al ., 2005) , graphite pencil electrode (Ly et al ., 2010) , and hanging mercury drop electrode (Cha et al ., 2000) . The detection limits of such methods are high, however, and the mercury sensor is environmentally toxic.…”