印刷线路板分压离子阱的离子单向出射性能研究

引用本文: 张在越, 袁广洲, 何洋, 钱洁, 张曙光, 姚如娇, 丁传凡, 李晓旭. 印刷线路板分压离子阱的离子单向出射性能研究[J]. 分析化学, 2017, 45(2): 297-302. doi: 10.11895/j.issn.0253-3820.160715 shu

Citation: ZHANG Zai-Yue, YUAN Guang-Zhou, HE Yang, QIAN Jie, ZHANG Shu-Guang, YAO Ru-Jiao, DING Chuan-Fan, LI Xiao-Xu. Research of Unidirectional Ion Ejection in Printed-Circuit-Board Ion Trap[J]. Chinese Journal of Analytical Chemistry, 2017, 45(2): 297-302. doi: 10.11895/j.issn.0253-3820.160715 shu

印刷线路板分压离子阱的离子单向出射性能研究

张在越 ^1, ,
袁广洲 ^1, ,
何洋 ^1, ,
钱洁 ^1, ,
张曙光 ^1, ,
姚如娇 ^1, ,
丁传凡 ^2, ,
李晓旭 ^1,

1.
苏州大学机电工程学院, 苏州 215021;
2.
复旦大学化学系, 上海 200433
基金项目:
本文系国家自然科学基金项目（No.61601314）资助

摘要: 印刷线路板（Printed-Circuit-Board，PCB）分压离子阱是一种新型质量分析器，其突出优点在于内部电场可通过调节射频分压比进行优化。本实验在PCB分压离子阱离子出射方向的两组离散电极上配置了非对称的射频分压，以引入奇次阶场成分，使得射频电场的场中心（即离子运动中心）发生偏移，从而实现离子单向出射。通过数值计算软件SIMION和AXSIM分析了射频分压比差值与其内部电场分布的关系，并模拟离子运动轨迹，得到离子出射情况和模拟质谱峰。模拟结果表明，当两组离散电极的射频分压比差值为20%时，在合适的AC频率条件下，对于m/z=609 Th的离子，PCB分压离子阱的离子单向出射率可达90%以上，且质量分辨率大于2500。本研究可使PCB分压离子阱在基本不损失质量分辨率和使用单检测器模式下，大幅提高离子检测效率，因而在小型化质谱仪应用中具有显著优势。

关键词:

English

Research of Unidirectional Ion Ejection in Printed-Circuit-Board Ion Trap

1.
School of Mechanical and Electrical Engineering, Soochow University, Suzhou 215021, China;
2.
Department of Chemistry, Fudan University, Shanghai 200433, China
Received Date: 25 September 2016
Revised Date: 16 November 2016
Fund Project:
This work was supported by the National Natural Science Foundation of China (No.61601314)

Abstract: Printed-circuit-board ion trap (PCBIT) is a novel ion trap mass analyzer, which is capable of optimizing its internal electric field distributions by adjusting the radio frequency (RF) voltage-divided ratio to improve its analytical performance. This work introduced odd electric field components into the trapping volume to achieve unidirectional ion ejection by applying asymmetric RF voltages to x electrode pairs of PCBIT. In this case, the center of ion vibration was displaced away from the geometrical center of PCBIT and ions were ejected predominantly through one of x electrode pairs. The relationship between asymmetric voltage-divided ratio (ΔV) and internal electric field distributions was investigated by simulation software SIMION and AXSIM. At the same time, the ion trajectories and simulated mass spectrum peaks were calculated. The results showed that, for ions with m/z 609 Th, a mass resolution over 2500 and an ion unidirectional ejection efficiency of over 90% were achieved in PCBIT with ΔV=20% at an appropriate frequency of AC. Using this method, ion unidirectional ejection efficiency of PCBIT can be significantly improved while maintaining a high mass resolution, which makes the PCBIT more suitable for developing miniaturized mass spectrometer.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

印刷线路板分压离子阱的离子单向出射性能研究

English

Research of Unidirectional Ion Ejection in Printed-Circuit-Board Ion Trap

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中国化学会秘书处

印刷线路板分压离子阱的离子单向出射性能研究

English

Research of Unidirectional Ion Ejection in Printed-Circuit-Board Ion Trap

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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