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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Simultaneous quantification of aqueous peroxide, nitrate, and nitrite during the plasma-liquid interactions by derivative absorption spectrophotometry
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Simultaneous quantification of aqueous peroxide, nitrate, and nitrite during the plasma-liquid interactions by derivative absorption spectrophotometry

机译：通过衍生吸收分光光度法同时定量过氧化氢水溶液，硝酸盐和亚硝酸盐

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摘要

A derivative absorption spectroscopic method is used in situ to simultaneously trace and quantify the aqueous peroxide (H2O2), nitrate (NO3-) and nitrite (NO2-) generated during plasma-liquid interactions. The results indicate that the time evolutions of H2O2, NO3- and NO2- generated from the plasma-liquid interactions strongly depend on the solution's pH value, which varies with the plasma treatment. The concentrations of aqueous H2O2, NO3- and NO2- increase independently from each other during the plasma treatment when the solution's pH value is higher than 3.0. However, when the solution's pH value is less than 3.0, most of the aqueous NO2- (similar to 71.5%) will exist in the form of molecular nitrous acid since the pK(a) of nitrous acid is 3.4, the aqueous NO-3 is mainly formed from the reaction between H2O2 and NO2- as well as the decomposition of molecular HNO2, which leads to a continuous increase of NO3- concentration and an appearance of the maximum concentrations of H2O2 and NO2- as the pH value of the solution reaches 3.0.
机译：衍生吸收光谱法原位使用以同时染色并定量在血浆 - 液相期间产生的过氧化氢（H 2 O 2），硝酸盐（NO 3-）和亚硝酸盐（NO 2-）。结果表明，从等离子体 - 液相中产生的H 2 O 2，NO 3和NO 2的时间逐渐取决于溶液的pH值，这随着等离子体处理而变化。当溶液的pH值高于3.0时，在等离子体处理期间，H 2 O 2，NO 3和NO 2水溶液浓度彼此独立增加。但是，当溶液的pH值小于3.0时，由于亚硝酸的PK（A）为3.4，因此，亚硝酸的PK（A）为3.4，因此，亚硝酸的形式为3.4，所以存在溶液的pH值水溶性No 2-（类似于71.5％）。主要由H 2 O 2和NO 2之间的反应形成 - 以及分子HNO2的分解，这导致NO 3-浓度的连续增加和H2O2和NO2的最大浓度的外观 - 因为溶液的pH值达到3.0。

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  • 作者

    He Bangbang; Ma Yupengxue; Gong Xinning; Long Zhijun; Li Junshuai; Xiong Qing; Liu Hai; Chen Qiang; Zhang Xianhui; Yang Size; Liu Qing Huo;

  • 作者单位

    Xiamen Univ Inst Electromagnet &

    Acoust Fujian Prov Key Lab Plasma &

    Magnet Resonance Dept Elect Sci Xiamen 361005 Peoples R China;

    Xiamen Univ Inst Electromagnet &

    Acoust Fujian Prov Key Lab Plasma &

    Magnet Resonance Dept Elect Sci Xiamen 361005 Peoples R China;

    Xiamen Univ Inst Electromagnet &

    Acoust Fujian Prov Key Lab Plasma &

    Magnet Resonance Dept Elect Sci Xiamen 361005 Peoples R China;

    Xiamen Univ Inst Electromagnet &

    Acoust Fujian Prov Key Lab Plasma &

    Magnet Resonance Dept Elect Sci Xiamen 361005 Peoples R China;

    Lanzhou Univ Sch Phys Sci &

    Technol Lanzhou 730000 Gansu Peoples R China;

    Chongqing Univ State Key Lab Power Transmiss Equipment &

    Syst Se Chongqing 400044 Peoples R China;

    Xiamen Univ Inst Electromagnet &

    Acoust Fujian Prov Key Lab Plasma &

    Magnet Resonance Dept Elect Sci Xiamen 361005 Peoples R China;

    Xiamen Univ Inst Electromagnet &

    Acoust Fujian Prov Key Lab Plasma &

    Magnet Resonance Dept Elect Sci Xiamen 361005 Peoples R China;

    Xiamen Univ Inst Electromagnet &

    Acoust Fujian Prov Key Lab Plasma &

    Magnet Resonance Dept Elect Sci Xiamen 361005 Peoples R China;

    Xiamen Univ Inst Electromagnet &

    Acoust Fujian Prov Key Lab Plasma &

    Magnet Resonance Dept Elect Sci Xiamen 361005 Peoples R China;

    Duke Univ Dept Elect &

    Comp Engn Durham NC 27708 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用物理学;
  • 关键词

    derivative absorption spectrophotometry; plasma-liquid interactions; peroxide; nitrate; nitrite;

    机译：衍生吸收分光光度法;血浆 - 液相相互作用;过氧化物;硝酸盐;亚硝酸盐;

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