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Published on: July 13, 2018
On-Chip Microplasmas for the Detection of Radioactive Cesium Contamination in Seawater
Joshua B Joffrion1, Darrian Mills2, William Clower3
1Institute for Micromanufacting, Louisiana Tech University, Ruston, LA 71272, USA. jbj021@latech.edu.
Abstract:
On-chip microplasmas have previously been used in designing a compact and portable device for identifying pollutants in a water sample. By exciting a liquid sample with a high energy microdischarge and recording the spectral wavelengths emitted, the individual elements in the liquid are distinguishable. In particular, this study focuses on cesium, a contaminant from nuclear incidents such as the collapse of the nuclear power plant in Fukushima, Japan. This article shows that not only can the presence of cesium be clearly determined at concentrations as low as 10 ppb, but the relative concentration contained in the sample can be determined through the discharges' relative spectral intensity.
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