Real-time determination of metal concentrations in liquid flows using microplasma emission spectroscopy

Author

von der Geest, K.B. ; Hyvonen, J. ; Laurila, Tomi

Author_Institution

Centre for Meas. & Inf. Syst., Univ. of Oulu, Kajaani, Finland

fYear

2012

fDate

13-16 Dec. 2012

Firstpage

1

Lastpage

5

Abstract

We present a compact and robust analyzer employing micro-plasma emission spectroscopy for real-time determination of metal concentrations in flowing water samples. The analyzer has been characterized by measuring Na, Mn and Ag at mg/L concentrations. The intensity fluctuations of the emission signals have been significantly reduced by applying the Boltzmann plot method to account for variations in the excitation temperature and the number of emitting particles.

Keywords

alumina; ceramics; electrodes; lattice Boltzmann methods; manganese; microfluidics; plasma diagnostics; plasma temperature; silver; sodium; tungsten; Ag; Al₂O₃-W; Boltzmann plot method; Mn; Na; ceramic alumina; compact analyzer; emission signal; emitting particle number; excitation plasma temperature; flowing water samples; integrated microfluidic channel; intensity fluctuations; liquid flows; metal concentration; microplasma emission spectroscopy; real-time determination; robust analyzer; tungsten electrodes; Atomic measurements; Cathodes; Density measurement; Dielectrics; Discharges (electric); Fluctuations; Robustness;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics Global Conference (PGC), 2012

Conference_Location

Singapore

Print_ISBN

978-1-4673-2513-4

Type

conf

DOI

10.1109/PGC.2012.6458046

Filename

6458046