scholarly journals Laser-Induced Breakdown Spectroscopy in Africa

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
M. A. Kasem ◽  
M. A. Harith

Laser-induced breakdown spectroscopy (LIBS), known also as laser-induced plasma spectroscopy (LIPS), is a well-known spectrochemical elemental analysis technique. The field of LIBS has been rapidly matured as a consequence of growing interest in real-time analysis across a broad spectrum of applied sciences and recent development of commercial LIBS analytical systems. In this brief review, we introduce the contributions of the research groups in the African continent in the field of the fundamentals and applications of LIBS. As it will be shown, the fast development of LIBS in Africa during the last decade was mainly due to the broad environmental, industrial, archaeological, and biomedical applications of this technique.

2018 ◽  
Vol 33 (11) ◽  
pp. 1917-1924 ◽  
Author(s):  
Violeta Lazic ◽  
Montserrat Filella ◽  
Andrew Turner

In this study, the feasibility of measuring the Sb content in different plastic materials by laser induced plasma spectroscopy (LIBS) is explored.


Proceedings ◽  
2018 ◽  
Vol 2 (23) ◽  
pp. 1461
Author(s):  
German Marcos-Robredo ◽  
Miguel Angel Rey-Ronco ◽  
Teresa Alonso-Sánchez

In this article, the results of a methodology to perform the elemental analysis of samples from mining borehole samples using the Laser-Induced Breakdown Spectroscopy (LIBS) technique are presented. The developed method can be carried out either on powder and on slurry samples, which would comparable to the samples obtained in a mineral processing plant.


2015 ◽  
Author(s):  
V. K. Unnikrishnan ◽  
Rajesh Nayak ◽  
Sujatha Bhat ◽  
Stanley Mathew ◽  
V. B. Kartha ◽  
...  

2002 ◽  
Vol 56 (6) ◽  
pp. 682-688 ◽  
Author(s):  
K. M. Lo ◽  
N. H. Cheung

Aqueous samples containing trace amounts of metal ions in 0.8 M HCl were ablated with an ArF laser. Plasma emissions were monitored for elemental analysis. The signal-to-noise ratio was optimized when the laser fluence was about 10 J cm−2, while the detector gate delay and width were 1–2 μs and 3–4 μs, respectively. During that time, the temperature and electron density of the induced plasma were also measured spectroscopically. The temperature dropped from about 0.5 to about 0.3 eV, while the density remained fairly constant at about 3 × 1016 cm−3. Background-free spectrochemical analysis was therefore possible. The detection limits for Na, Ca, Ba, and Pb were 0.4, 3, 7, and 300 ppb, respectively. These are 20 to 1000 times better than the best achieved by non-193-nm laser-induced breakdown spectroscopy.


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