Inductive discharge as a method for direct detection of impurities in water

All-Russian Conference with the School for Young Scientists “Thermophysics and Physical Hydrodynamics –2016”

Medvedev, R.N.^1 ; Churkin, D.S.^2,3 ; Zarubin, I.A.^4,5

Lavrentyev Institute of Hydrodynamics, SB, RAS, Lavrentyev Prosp. 15, Novosibirsk

630090, Russia^1

Institute of Laser Physics, SB, RAS, Lavrentyev Prosp. 13/3, Novosibirsk

630090, Russia^2

Novosibirsk State University, Pirogova St. 2, Novosibirsk

630090, Russia^3

Institute of Automation and Electrometry, SB, RAS, Academician Koptug ave. 1, Novosibirsk

630090, Russia^4

Novosibirsk State Technical University, Prosp. K. Marksa 20, Novosibirsk

630073, Russia^5

关键词: Atomic spectra;    Boltzmann plot;    Direct detection;    Impurities in;    Inductive discharges;    Plasma power;    Plasma temperature;    Sodium ions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/754/10/102007/pdf
DOI  :  10.1088/1742-6596/754/10/102007

来源: IOP

【 摘 要 】

This paper reports on the excitation of atomic spectra of tap water vapor using an inductive discharge. It is shown that at a RF source frequency of 27 MHz and a plasma power output from 500 to 600 W, a steady discharge exists to pressures of 10-2atm. Plasma temperature was determined by the Boltzmann plot method and was approximately 5500 K. At this temperature, it was possible to detect sodium ions dissolved in water. This suggests that an inductive discharge in water vapor can be used to determine the presence of impurities.