Evaluation of a New Particle Trap in a Laser Desorption Mass Spectrometer for Online Measurement of Aerosol Composition

Evaluation of a New Particle Trap in a Laser Desorption Mass Spectrometer for Online Measurement of Aerosol Composition
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激光解吸质谱仪中用于在线测量气溶胶成分的新型颗粒捕集器的评估

DOI:
10.1080/02786826.2011.635727
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发表时间:
2012
影响因子:
5.2
通讯作者:
N. Hirayama
N. Hirayama
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
N. Takegawa;T. Miyakawa;T. Nakamura;Y. Sameshima;M. Takei;Y. Kondo;N. Hirayama

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我们研制了一种用于在线测量气溶胶成分的新型分析仪:粒子阱激光解吸质谱仪(PT-LDMS)。该仪器的主要部件包括空气动力学透镜、由石英池封闭的颗粒捕集器、四极质谱仪(QMS)、包含上述部件的真空室和二氧化碳(CO2)激光器(波长10.6 μm)。空气动力学透镜产生一束亚微米粒子,聚焦在粒子捕集器上的一个小区域上。颗粒捕集器由定制的网格层组成,其结构是使用微机电系统(MEMS)的工程技术新设计的。捕集器中大量的网格框架排列良好,颗粒在框架上多次撞击后可以被高效捕获。CO2激光器用于蒸发颗粒捕集器上捕获的气溶胶化合物。使用电子碰撞电离(EI)QMS分析限制在石英池内的放出气体以量化颗粒的化学组成。的PT-LDMS的概念和第一次评估其性能,特别是专注于粒子陷阱的结构和性能。
We have developed a new analyzer for the online measurement of aerosol composition: a particle trap laser desorption mass spectrometer (PT-LDMS). The main components of the instrument include an aerodynamic lens, a particle trap enclosed by a quartz cell, a quadrupole mass spectrometer (QMS), a vacuum chamber incorporating the above components, and a carbon dioxide (CO2) laser (wavelength 10.6 μm). The aerodynamic lens generates a beam of submicron particles, which is focused on a small area on the particle trap. The particle trap consists of custom-made mesh layers, the structure of which was newly designed using engineering techniques for micro electro mechanical systems (MEMS). A large number of mesh frames are well arranged in the trap, and particles can be efficiently captured after multiple impactions on the frames. The CO2 laser is used to vaporize aerosol compounds captured on the particle trap. The evolved gas confined within the quartz cell is analyzed using an electron impact ionization (EI) QMS to quantify the chemical composition of the particles. The concept of the PT-LDMS and first evaluation of its performance are presented, specifically focusing on the structure and performance of the particle trap.
DOI: 10.1080/02786820802582251
发表时间: 2009-02
影响因子: 5.2
作者:
N. Takegawa;T. Miyakawa;M. Watanabe;Y. Kondo;Y. Miyazaki;S. Han;Yongjing Zhao;D. Pinxteren;E. Brüggemann;T. Gnauk;H. Herrmann;R. Xiao;Z. Deng;Min Hu;T. Zhu;Y. Zhang
通讯作者: N. Takegawa;T. Miyakawa;M. Watanabe;Y. Kondo;Y. Miyazaki;S. Han;Yongjing Zhao;D. Pinxteren;E. Brüggemann;T. Gnauk;H. Herrmann;R. Xiao;Z. Deng;Min Hu;T. Zhu;Y. Zhang
DOI: 10.1080/027868200410840
发表时间: 2000-07-01
影响因子: 5.2
作者:
Jayne, JT;Leard, DC;Worsnop, DR
通讯作者: Worsnop, DR
Aerodyne 气溶胶质谱仪 (AMS) 的表征:与其他气溶胶仪器的相互比较
DOI: --
发表时间: 2005
期刊: Aerosol Science and Technology 39
影响因子: --
作者:
Takegawa;N.;Y.Miyazaki;Y.Kondo他7名
通讯作者: Y.Kondo他7名