Dual-jet plasmatron for medical applications

Abstract

We present a design for a dual-jet arc plasmatron operating at a frequency of 66 kHz in an argon flow at atmospheric pressure. We present the results of determination of the temperature, electron concentration, and electrode erosion obtained by atomic emission spectral analysis. The proposed convenient design for a dualjet plasmatron and the low erosion of the copper electrodes in the plasma make it possible to use it for medical purposes.

Adsorption Behaviors of Rubidium and Cesium Ions from Aqueous Solution onto Sodium Tetraphenylborate ‐ Polyacrylonitrile (TPB‐PAN)

“…The electric charge of the functional adsorbent surface and the degree of protonation during metal ions adsorption both are owing to the pH value. [47,48] Therefore, the effect of pH value on the Rb(I) and Cs(I) adsorption using TPB-PAN was investigated over the pH range from 3.0 to 12.0 used HNO 3 and NH 3 . H 2 O, respectively.…”

“…Rubidium and cesium are some of alkali metals with unique active chemical properties and excellent photoelectricity effect owing to the low ionization potential, and widely applied in electronic technology, defense and aerospace industries, genetic engineering, catalyst, glass and ceramics, medicine, energy fields and many other fields. [1][2][3][4] Mostly rubidium, cesium and their common salts exist in natural minerals [5] and dissolve in aqueous solution such as geothermal water, underground water, thermal water, [6] oil and gas field water, [7] oceans [8] and salt lake brine. [9] Although rubidium, cesium and their compounds are more abundant in the worldwide salt lakes, however, there are few reports on the extraction of rubidium and cesium elements from the natural resources such as salt lake brine, mainly due to their low concentrations(about 0 À100 mg L À1 ), the complexity of numerous foreign ion species with much higher concentration in the matrix, [10,11] which increase the difficulty of extraction and separation trace elements.…”