中华医学超声杂志

应用化学 ›› 2009, Vol. 26 ›› Issue (11): 1341-1344.

• 研究论文 • 上一篇    下一篇

强电离放电等离子体中活性物种的检测

徐吉成1,2,储金宇1*,周建军1,元强1   

  1. (1.江苏大学环境学院 镇江 212013；2.镇江市高等专科学校 镇江)
  • 收稿日期:2008-11-07 修回日期:2009-02-12 出版日期:2009-11-10 发布日期:2009-11-10
  • 通讯作者: 储金宇,男,教授; E-mail:jychu@ujs.edu.cn; 研究方向：绿色氧化技术
  • 作者简介:徐吉成 (1980-),男，江苏丹徒人，实验师；Email:  xjcc@zjc.edu.cn; 研究方向：高级氧化技术储金宇(1962-) ,男,陕西华县人,教授；Email: jychu@ujs.edu.cn；研究方向：绿色氧化技术。

The determination of activated species in strong ionization discharging plasma

XU Ji-Cheng1,2, CHU Jin-Yu1*, ZHOU Jian-Jun1, YUAN Qiang1   

  1. (1.School of Environment Jiangsu University,Zhenjiang 212013;
    2.Zhenjiang College,Zhenjiang)
  • Received:2008-11-07 Revised:2009-02-12 Published:2009-11-10 Online:2009-11-10
  • About author:XU Ji-Cheng ，CHU Jin-Yu

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1106

被引次数

1

摘要：

利用氧化还原滴定法检测了强电离放电等离子体中活性物种，用以衡量等离子体的表观氧化能力。分别考察了pH值、放电气体流量、放电功率、放电气体压力、反应时间等因素对检测的影响。在pH＝6.0，反应时间3 min优化条件下，随放电功率增加，等离子体中活性物种浓度增加；放电气体流量增加，等离子体中活性物种浓度下降；放电气体压力增加，等离子体中活性物种浓度增加。本方法设备简单、再现性好，灵敏度高，检出限为3.91×10-5 mol/L。

关键词: 强电离放电, 等离子体, 活性物种, 检测

Abstract:

A method was developed to determine the concentration of activated species in strong ionization discharge 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 ion was titrated with potassium permanganate, the amount of which was used to determine the concentration of the activated species. Some influence 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 showed 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’s shown that the reproducibility and the sensitivity of the determination method are all satisfied, and the detection limit reaches 3.91×10-5mol/L.

Key words: strong ionization discharge, plasma, activated species, determination

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