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高等学校化学研究 ›› 2017, Vol. 33 ›› Issue (5): 709-713.doi: 10.1007/s40242-017-7072-3

• Articles • 上一篇    下一篇

Development of a Novel Kilowatt Microwave Plasma Torch Source for Atomic Emission Spectrometry

ZHU Dan1, JIN Wei1,2, YU Bingwen1, YING Yangwei1, YU Haixiang1, SHAN Jin1, YAN Yuwei1, XU Chen2, WANG Baolai3, JIN Qinhan1   

  1. 1. Research Center for Analytical Instrumentation, Institute of Cyber-systems and Control, College of Control and Engineering, Zhejiang University, Hangzhou 310058, P. R. China;
    2. Zhejiang Tracetech Technology Co., Ltd., Hangzhou 310053, P. R. China;
    3. Hangzhou Steam Turbine Co., Ltd., Hangzhou 310022, P. R. China
  • 收稿日期:2017-02-28 修回日期:2017-06-05 出版日期:2017-10-01 发布日期:2017-07-03
  • 通讯作者: JIN Wei,E-mail:jinweimy@zju.edu.cn E-mail:jinweimy@zju.edu.cn
  • 基金资助:

    Supported by the National Key Scientific Instrument and Equipment Development Project of China(No.2013YQ470781).

Development of a Novel Kilowatt Microwave Plasma Torch Source for Atomic Emission Spectrometry

ZHU Dan1, JIN Wei1,2, YU Bingwen1, YING Yangwei1, YU Haixiang1, SHAN Jin1, YAN Yuwei1, XU Chen2, WANG Baolai3, JIN Qinhan1   

  1. 1. Research Center for Analytical Instrumentation, Institute of Cyber-systems and Control, College of Control and Engineering, Zhejiang University, Hangzhou 310058, P. R. China;
    2. Zhejiang Tracetech Technology Co., Ltd., Hangzhou 310053, P. R. China;
    3. Hangzhou Steam Turbine Co., Ltd., Hangzhou 310022, P. R. China
  • Received:2017-02-28 Revised:2017-06-05 Online:2017-10-01 Published:2017-07-03
  • Contact: JIN Wei,E-mail:jinweimy@zju.edu.cn E-mail:jinweimy@zju.edu.cn
  • Supported by:

    Supported by the National Key Scientific Instrument and Equipment Development Project of China(No.2013YQ470781).

摘要：

Traditional low power-microwave plasma torch (MPT) excitation source of atomic emission spectrometry was shown to be good for the introduction of dry aerosols,but poor for wet sample aerosols.In this work,some significant modifications have been made to traditional MPT.A new MPT excitation source working at kilowatt microwave power has been developed.The kilowatt MPT source can sustain stable plasmas with double or even more filaments,presenting a "bell" form,where the region around the converging point is the optimum region for analysis. The tolerance to aqueous aerosol of the torch is enhanced significantly compared to the traditional one.Therefore,the desolvation system that the low power MPT source has to be relied on can be gotten rid of.A set of favorable detection results have been obtained with direct wet sample aerosol introduction.The kilowatt MPT source is expected to become a practical excitation source for atomic emission spectrometry that will be widely used.

关键词: Kilowatt microwave plasma torch, Coupling structure, Direct sample aerosol introduction, Atomic emission spectrometry

Abstract:

Traditional low power-microwave plasma torch (MPT) excitation source of atomic emission spectrometry was shown to be good for the introduction of dry aerosols,but poor for wet sample aerosols.In this work,some significant modifications have been made to traditional MPT.A new MPT excitation source working at kilowatt microwave power has been developed.The kilowatt MPT source can sustain stable plasmas with double or even more filaments,presenting a "bell" form,where the region around the converging point is the optimum region for analysis. The tolerance to aqueous aerosol of the torch is enhanced significantly compared to the traditional one.Therefore,the desolvation system that the low power MPT source has to be relied on can be gotten rid of.A set of favorable detection results have been obtained with direct wet sample aerosol introduction.The kilowatt MPT source is expected to become a practical excitation source for atomic emission spectrometry that will be widely used.

Key words: Kilowatt microwave plasma torch, Coupling structure, Direct sample aerosol introduction, Atomic emission spectrometry