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Related Concept Videos

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then passed on to...
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Related Experiment Video

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Using a Cyclic Ion Mobility Spectrometer for Tandem Ion Mobility Experiments
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Published on: January 20, 2022

A novel surface ionization source for ion mobility spectrometer.

Guo Hui-yong1, He Xiu-li, Gao Xiao-guang

  • 1State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China.

Analytica Chimica Acta
|March 28, 2007
PubMed
Summary

A novel surface ionization (SI) source for ion mobility spectrometry (IMS) simplifies instrument design and enhances performance. This SI source offers a wide dynamic range and excellent reproducibility, outperforming radioactive ionization methods.

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Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
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Published on: July 27, 2018

Area of Science:

  • Analytical Chemistry
  • Spectroscopy
  • Instrumentation

Background:

  • Ion mobility spectrometry (IMS) is a powerful analytical technique.
  • Traditional IMS often requires complex high-voltage circuits and large drift tubes.
  • Radioactive ionization (RI) is a common ionization method but poses safety and disposal concerns.

Purpose of the Study:

  • To design and prepare a novel surface ionization (SI) source for IMS.
  • To investigate the performance of an IMS system utilizing the dual-role SI source.
  • To compare the characteristics of SI with traditional radioactive ionization (RI) in IMS.

Main Methods:

  • Development of a dual-role surface ionization (SI) source acting as both emitter and periodic ion injector.
  • Integration of the SI source into an ion mobility spectrometer (IMS).
  • Evaluation of the IMS system's response range, reproducibility, and spectral characteristics.

Main Results:

  • The SI source effectively injects ions periodically into the drift region.
  • The dual-role SI source allows for decreased drift tube dimensions and simplified high-voltage circuits.
  • The developed IMS exhibits a response range of approximately 4 orders of magnitude and good reproducibility for tri-ethylamine.
  • Key characteristics include ultra-short ion injection time and a zero-level baseline in the ion mobility spectrum.

Conclusions:

  • The developed SI source is a viable and efficient alternative for IMS.
  • This SI source simplifies IMS instrumentation and improves performance metrics.
  • SI offers distinct advantages over RI, including enhanced safety and spectral features.