Next Article in Journal
Color Filtering Localization for Three-Dimensional Underwater Acoustic Sensor Networks
Next Article in Special Issue
Stability of the Nine Sky Quality Meters in the Dutch Night Sky Brightness Monitoring Network
Previous Article in Journal
A New Gaze Estimation Method Considering External Light
Previous Article in Special Issue
A Bio-Inspired Two-Layer Sensing Structure of Polypeptide and Multiple-Walled Carbon Nanotube to Sense Small Molecular Gases
Article Menu

Export Article

Open AccessArticle
Sensors 2015, 15(3), 5982-6008; doi:10.3390/s150305982

Comparison of the Detection Characteristics of Trace Species Using Laser-Induced Breakdown Spectroscopy and Laser Breakdown Time-of-Flight Mass Spectrometry

1
State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, No.28, Xianning West Road, Xi'an 710049, China
2
Graduate School of Advanced Technology and Science, the University of Tokushima, 2-1, Minamijyosanjima, Tokushima 770-8506, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Ki-Hyun Kim
Received: 16 December 2014 / Revised: 27 February 2015 / Accepted: 28 February 2015 / Published: 11 March 2015
(This article belongs to the Special Issue Modern Technologies for Sensing Pollution in Air, Water, and Soil)
View Full-Text   |   Download PDF [3523 KB, uploaded 11 March 2015]   |  

Abstract

The rapid and precise element measurement of trace species, such as mercury, iodine, strontium, cesium, etc. is imperative for various applications, especially for industrial needs. The elements mercury and iodine were measured by two detection methods for comparison of the corresponding detection features. A laser beam was focused to induce plasma. Emission and ion signals were detected using laser-induced breakdown spectroscopy (LIBS) and laser breakdown time-of-flight mass spectrometry (LB-TOFMS). Multi-photon ionization and electron impact ionization in the plasma generation process can be controlled by the pressure and pulse width. The effect of electron impact ionization on continuum emission, coexisting molecular and atomic emissions became weakened in low pressure condition. When the pressure was less than 1 Pa, the plasma was induced by laser dissociation and multi-photon ionization in LB-TOFMS. According to the experimental results, the detection limits of mercury and iodine in N2 were 3.5 ppb and 60 ppb using low pressure LIBS. The mercury and iodine detection limits using LB-TOFMS were 1.2 ppb and 9.0 ppb, which were enhanced due to different detection features. The detection systems of LIBS and LB-TOFMS can be selected depending on the condition of each application. View Full-Text
Keywords: laser-induced breakdown spectroscopy (LIBS); laser breakdown time-of-flight mass spectrometry (LB-TOFMS); low pressure; electron impact ionization laser-induced breakdown spectroscopy (LIBS); laser breakdown time-of-flight mass spectrometry (LB-TOFMS); low pressure; electron impact ionization
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Wang, Z.; Deguchi, Y.; Yan, J.; Liu, J. Comparison of the Detection Characteristics of Trace Species Using Laser-Induced Breakdown Spectroscopy and Laser Breakdown Time-of-Flight Mass Spectrometry. Sensors 2015, 15, 5982-6008.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top