Ceramic atmospheric pressure micro glow discharge device with evaporating liquid flowing cathode for analytical purposes

In this paper we present miniature Atmospheric Pressure Glow Micro Discharge plasma generator device with evaporating, liquid cathode. The device is fabricated in the Low Temperature Cofired Ceramics. This material offers low-cost fabrication and is temperature resistant. The device can be used to qualitative and quantitative investigation of some elements and molecules in liquid samples. In our investigation we focus on the determination of Cu concentration in copper ore concentrate. The strong emission coming from Cu atomic lines were monitored. We obtain emission from copper at four wavelengths. It enables detection of the element with accuracy depending on wavelength, but proportional to amount of copper in the sample. In the article performance of the device is compared with typical plasma systems.