Elemental composition of rice using calibration free laser induced breakdown spectroscopy

In this paper, we apply laser induce breakdown spectroscopy (LIBS) to determine the elemental composition of different parts (root, stem and seed) of the rice plant and determine their weighted concentration using calibration free laser induced breakdown spectroscopy (CF-LIBS) technique. Ca, Fe and...

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Bibliographic Details
Published in:Optoelectronics letters 2019, Vol.15 (1), p.57-63
Main Authors: Jabbar, Abdul, Akhtar, Mahmood, Ali, Arslan, Mehmood, Shaukat, Iftikhar, Sidra, Baig, Muhmmad Aslam
Format: Article
Language:English
Subjects:
Aluminum
Barium
Calibration
Chemical composition
Chromium
Density
H alpha line
Laser induced breakdown spectroscopy
Lasers
Local thermodynamic equilibrium
Optical Devices
Optics
Optoelectronics Letters
Photonics
Physics
Physics and Astronomy
Silicon
Spectroscopy
Spectrum analysis
Strontium
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Summary:In this paper, we apply laser induce breakdown spectroscopy (LIBS) to determine the elemental composition of different parts (root, stem and seed) of the rice plant and determine their weighted concentration using calibration free laser induced breakdown spectroscopy (CF-LIBS) technique. Ca, Fe and K are identified as major elements, while C, Ti, Mg, Si, Li, Ba, Sr, Cr, Na and Al as minor elements. We also detect the H-alpha line of hydrogen in the spectrum and determine the electron number density. The electron number density and its behavior as a function of laser energy, laser wavelength and the detector position are investigated. The plasma temperatures of samples are determined, and the validity of the assumption of the local thermodynamic equilibrium (LTE) is discussed.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-019-8099-0