Laser-induced breakdown spectroscopy with high detection sensitivity

2009 ◽  
Author(s):  
X. K. Shen ◽  
H. Ling ◽  
Y. F. Lu
Keyword(s):  
Detection Sensitivity ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
High Detection ◽  
Laser Induced Breakdown ◽  
High Detection Sensitivity

Determination of uranium in ores using laser-induced breakdown spectroscopy combined with laser-induced fluorescence

2020 ◽  
Vol 35 (3) ◽  
pp. 626-631 ◽  
Author(s):  
Qingzhou Li ◽  
Wen Zhang ◽  
Zhiyang Tang ◽  
Ran Zhou ◽  
Jiujiang Yan ◽  
...  
Keyword(s):  
Laser Induced Fluorescence ◽  
Spectral Interference ◽  
Spectral Intensity ◽  
Detection Sensitivity ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

LIBS-LIF technology is proposed to enhance the spectral intensity of uranium in ores and eliminate spectral interference to achieve the purpose of improving detection sensitivity.

Sensitivity improvement in the detection of V and Mn elements in steel using laser-induced breakdown spectroscopy with ring-magnet confinement

2014 ◽  
Vol 29 (12) ◽  
pp. 2309-2314 ◽  
Author(s):  
Zhongqi Hao ◽  
Lianbo Guo ◽  
Changmao Li ◽  
Meng Shen ◽  
Xiaoheng Zou ◽  
...  
Keyword(s):  
Detection Sensitivity ◽  
Laser Induced Breakdown Spectroscopy ◽  
New Approach ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Sensitivity Improvement ◽  
Ring Magnet

A new approach for improving the detection sensitivity of V and Mn in steel using LIBS with ring-magnet confinement has been presented.

A comparative study of nanoparticle-enhanced laser-induced breakdown spectroscopy

2020 ◽  
Vol 35 (10) ◽  
pp. 2274-2281
Author(s):  
Jiacen Liu ◽  
Zongyu Hou ◽  
Tianqi Li ◽  
Yangting Fu ◽  
Zhe Wang
Keyword(s):  
Comparative Study ◽  
Spectral Intensity ◽  
Detection Sensitivity ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Nanoparticle-Enhanced Laser-Induced Breakdown Spectroscopy (NELIBS) has gained much attention due to its capability of improving spectral intensity and detection sensitivity. The merits and demerits of NELIBS were evaluted in this study.

Standoff Detection of Geological Samples of Metal, Rock, and Soil at Low Pressures Using Laser-Induced Breakdown Spectroscopy

2016 ◽  
Vol 70 (9) ◽  
pp. 1411-1419 ◽  
Author(s):  
Jae-Jun Choi ◽  
Soo-Jin Choi ◽  
Jack J. Yoh
Keyword(s):  
Certified Reference Materials ◽  
Correlation Coefficients ◽  
Low Pressure ◽  
Detection Sensitivity ◽  
Laser Induced Breakdown Spectroscopy ◽  
Geological Samples ◽  
Breakdown Spectroscopy ◽  
Standoff Detection ◽  
Laser Induced Breakdown ◽  
Pressure Changes

Categorized certified reference materials simulating metal, rock, soils, or dusts are used to demonstrate the standoff detection capability of laser-induced breakdown spectroscopy (LIBS) at severely low pressure conditions. A Q-switched Nd:YAG laser operating at 1064 nm with 17.2–50 mJ energy per pulse was used to obtain sample signals from a distance of 5.5 m; the detection sensitivity at pressures down to 0.01 torr was also analyzed. The signal intensity response to pressure changes is explained by the ionization energy and electronegativity of elements, and from the estimated full width half-maximum (FWHM) and electron density, the decrease in both background noise and line broadening makes it suitable for low pressure detection using the current standoff LIBS configuration. The univariate analyses further showed high correlation coefficients for geological samples. Therefore, the present work has extended the current state-of-the-art of standoff LIBS aimed at harsh environment detection.

Improving Detection Sensitivity of Cu in Sewage by Laser Induced Breakdown Spectroscopy Using Filter Paper Enrichment

2013 ◽  
Vol 50 (7) ◽  
pp. 073004 ◽  
Author(s):  
郑美兰 Zheng Meilan ◽  
姚明印 Yao Mingyin ◽  
何秀文 He Xiuwen ◽  
欧阳静怡 OuYang Jingyi ◽  
林永增 Lin Yongzeng ◽  
...  
Keyword(s):  
Filter Paper ◽  
Detection Sensitivity ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Design and application of near-field applicators for efficient microwave-assisted laser-induced breakdown spectroscopy

2017 ◽  
Vol 32 (8) ◽  
pp. 1508-1518 ◽  
Author(s):  
Shengjian Jammy Chen ◽  
Adeel Iqbal ◽  
Matthew Wall ◽  
Christophe Fumeaux ◽  
Zeyad T. Alwahabi
Keyword(s):  
Near Field ◽  
Detection Sensitivity ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Microwave Assisted ◽  
Laser Induced Breakdown ◽  
Elemental Detection ◽  
Design And Application

Laser-induced breakdown spectroscopy (LIBS) can benefit from sustaining laser generated plasma with microwaves to enhance elemental detection sensitivity.

Molecular laser-induced breakdown spectroscopy for elemental analysis

2017 ◽  
Vol 84 (1) ◽  
Author(s):  
Anne-Sophie Rother ◽  
Thomas Dietz ◽  
Peter Kohns ◽  
Georg Ankerhold
Keyword(s):  
Emission Spectra ◽  
Visible Spectral Region ◽  
Detection Sensitivity ◽  
Laser Induced Breakdown Spectroscopy ◽  
Time Resolved ◽  
Molecular Emission ◽  
Breakdown Spectroscopy ◽  
Characteristic Emission ◽  
Laser Induced Breakdown ◽  
Cooling Phase

AbstractLaser-induced breakdown spectroscopy (LIBS) with pulsed laser excitation is a well-established method for analyzing the atomic components of an unknown sample based on their characteristic emission spectra. However, standard LIBS analysis provides insufficient results if the atoms to be measured exhibit weak elemental emission lines or if characteristic elemental spectra are disturbed by overlapping stronger lines of other elements in the sample. The analysis of the molecular emission bands arising in the plasma cooling phase seems to be a promising solution. The analysis is carried out by the observation of newly formed radicals and diatomic molecules whose strong molecular emission bands can often be found in the visible spectral region and offer a higher detection sensitivity. This generally requires a time resolved measurement of the LIBS spectra, but we show that in some cases this is not necessarily needed. As an application we present the measurement of chloride contamination in concrete that could help to estimate the repair demand of infrastructure buildings in future.

Detection sensitivity of laser-induced breakdown spectroscopy for Cr II in liquid samples

2008 ◽  
Vol 47 (31) ◽  
pp. G105 ◽  
Author(s):  
Nilesh K. Rai ◽  
Awadhesh K. Rai ◽  
Akshaya Kumar ◽  
Surya N. Thakur
Keyword(s):  
Detection Sensitivity ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Liquid Samples ◽  
Laser Induced Breakdown
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