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Citation: XU Ji-Cheng, CHU Jin-Yu, ZHOU Jian-Jun, YUAN Qiang. Determination of Activated Species in Strong Ionized Discharging Plasma[J]. Chinese Journal of Applied Chemistry, ;2009, 26(11): 1341-1344. shu

Determination of Activated Species in Strong Ionized Discharging Plasma

1.
a School of Environment, Jiangsu University, Zhenjiang 212013;
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b Zhenjiang College, Zhenjiang

Corresponding author: CHU Jin-Yu,
Received Date: 6 November 2008
Available Online: 12 February 2009
Fund Project: 国家自然科学基金资助项目(50276025) (50276025)

A method was developed to determine the concentration of activated species in strong ionized discharging plasma,which could be used to measure the apparent oxidation ability.In the experiments,the excess ferrous ions reacted with the activated species in plasma,and then the remained ferrous ions was titrated with potassium permanganate,the amount of which was used to determine the concentration of the activated species.Some influencing factors,such as pH value,flow of discharging gas,discharging power,pressure of discharging gas and reaction time,were evaluated,respectively.The results of experiments show that pH=6.0 was the proper initial pH value;the reaction time had less effect on the determination,so 3 minutes was suitable;the concentration of the activated species increased with the increases of discharging power and the pressure of discharging gas,but decreased with the increase of the flow of discharging gas.It has shown that the reproducibility and the sensitivity of the determination method are all satisfied,and the detection limit reaches 3.91×10^-5 mol/L.
- strong ionization discharge,
- plasma,
- activated species,
- determination
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