A multi-electrode glow discharge ionization source for atomic and molecular mass spectrometry,Journal of Analytical Atomic Spectrometry

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A multi-electrode glow discharge ionization source for atomic and molecular mass spectrometry
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2020-07-13 , DOI: 10.1039/d0ja00142b
Edward D. Hoegg _{1,

2,

3,

4} , Tyler J. Williams _{4,

5,

6,

7,

8} , Jacob R. Bills _{4,

5,

6,

7,

8} , R. Kenneth Marcus _{4,

5,

6,

7,

8} , David W. Koppenaal _{2,

3,

4,

9}

Affiliation

A new, multi-electrode, liquid sampling glow discharge ionization source for mass spectrometry is described. This ion source consists of multiple (2–4) counter (anode) electrodes in comparison to prior single counter electrode designs of this type. In the experiments presented here these ion sources have been interfaced with ThermoScientific Exactive Orbitrap instruments and Advion Expression Compact Mass Spectrometer instruments. Advantages and analytical performance improvements are described. These include the ability to use higher plasma currents, resulting in a more robust and energetic plasma exhibiting higher sensitivity, lower spectral background, ppt detection limits, and 2–3× faster washout times. A low-cost, 3D printed version of a dual counter electrode design is also described. The ion source can further be utilized in either atomic (elemental/isotopic) or molecular (molecular ion, fragmentation) ionization modes.

中文翻译：

用于原子和分子质谱的多电极辉光放电电离源

描述了一种用于质谱的新型多电极液体采样辉光放电电离源。与以前的这种单反电极设计相比，该离子源由多个（2-4）反电极（阳极）组成。在此处介绍的实验中，这些离子源已与ThermoScientific Exactive Orbitrap仪器和Advion Expression Compact质谱仪仪器连接。描述了优点和分析性能的提高。这些包括使用更高的等离子体电流的能力，从而导致显示出更高的灵敏度，更低的光谱背景，ppt检测极限和2-3倍更快的洗脱时间的更强健和充满活力的等离子体。还描述了双对电极设计的低成本3D打印版本。

更新日期：2020-09-02

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