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Title: Determination of elemental composition of shale rocks by laser induced breakdown spectroscopy

Authors:
; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1359838
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Spectrochimica Acta. Part B, Atomic Spectroscopy
Additional Journal Information:
Journal Volume: 122; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-10-11 04:31:38; Journal ID: ISSN 0584-8547
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Sanghapi, Hervé K., Jain, Jinesh, Bol'shakov, Alexander, Lopano, Christina, McIntyre, Dustin, and Russo, Richard. Determination of elemental composition of shale rocks by laser induced breakdown spectroscopy. United Kingdom: N. p., 2016. Web. doi:10.1016/j.sab.2016.05.011.
Sanghapi, Hervé K., Jain, Jinesh, Bol'shakov, Alexander, Lopano, Christina, McIntyre, Dustin, & Russo, Richard. Determination of elemental composition of shale rocks by laser induced breakdown spectroscopy. United Kingdom. doi:10.1016/j.sab.2016.05.011.
Sanghapi, Hervé K., Jain, Jinesh, Bol'shakov, Alexander, Lopano, Christina, McIntyre, Dustin, and Russo, Richard. 2016. "Determination of elemental composition of shale rocks by laser induced breakdown spectroscopy". United Kingdom. doi:10.1016/j.sab.2016.05.011.
@article{osti_1359838,
title = {Determination of elemental composition of shale rocks by laser induced breakdown spectroscopy},
author = {Sanghapi, Hervé K. and Jain, Jinesh and Bol'shakov, Alexander and Lopano, Christina and McIntyre, Dustin and Russo, Richard},
abstractNote = {},
doi = {10.1016/j.sab.2016.05.011},
journal = {Spectrochimica Acta. Part B, Atomic Spectroscopy},
number = C,
volume = 122,
place = {United Kingdom},
year = 2016,
month = 8
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.sab.2016.05.011

Citation Metrics:
Cited by: 2works
Citation information provided by
Web of Science

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  • A detection system based on laser induced breakdown spectroscopy (LIBS) was built using 266 nm wavelength pulsed laser from the fourth harmonic of Nd:YAG laser, 500 mm spectrograph and gated ICCD camera with built-in delay generator. The LIBS system was used to study the elemental composition in coffee available in the local market of Saudi Arabia for the detection of elements in coffee samples. The LIBS spectrum of coffee sample revealed the presence magnesium, calcium, aluminum, copper, sodium, barium, bromine, cobalt, chromium, cerium manganese and molybdenum. Atomic transition line of sodium is used to study the parametric dependence of LIBSmore » signal. The study of the dependence of LIBS signal on the laser pulse energy is proven to be linear and the dependence of LIBS signal on the time delay between the excitation and data acquisition showed a typical increase, a peak value and a decrease with the optimum excitation – acquisition delay at 400 ns.« less
  • Dual-energy computed tomography (CT) scanning is a rapidly emerging imaging technique employed in nondestructive evaluation of various materials. CT has been used for characterizing rocks and visualizing multiphase flow through rocks for over 25 years. The most common technique for dual-energy CT scanning relies on homogeneous calibration standards to produce the most accurate decoupled data. However, the use of calibration standards with impurities increases the probability of error in the reconstructed data and results in poor rock characterization. Laser-induced breakdown spectroscopy was used to determine impurity concentration in a set of commercially purchased calibration standards used in dual-energy scanning formore » material identification with coal samples. Two calibration models were developed by using univariate calibration with the internal ratio method and multiple linear regression. Seven elements (Al, Fe, Mg, Na, Ni, Sr, and Ti) were examined in five different samples containing varying amounts of each ion to compare calibration from univariate data analysis and from multivariate data analysis. The contaminant concentrations were also measured by a commercially available inductively coupled plasma optical emission spectroscopy instrument, and the data were used as a reference in developing calibration curves for a modified version of the single linear regression model and the multiple linear regression model.« less
  • Laser-induced breakdown spectroscopy (LIBS) is a technique that can provide qualitative and quantitative measurements of the characteristics of irradiated metals. In the present work, we have calculated the parameters of the plasma produced from a brass alloy sample under the action of a pulsed Nd: YAG laser operating at 1064 nm. The emission lines of copper atoms (Cu I), zinc atoms (Zn I), and lead atoms (Pb I), which are elements of a brass alloy composition, were used to investigate the parameters of the brass plasma. The spectral profiles of Cu, Zn, and Pb lines have been used to extractmore » the electron temperature and density of the brass alloy plasma. The characteristics of Cu, Zn, and Pb were determined quantatively by the calibration-free LIBS (CF-LIBS) method considering for accurate analysis that the laser-induced ablated plasma is optically thin in local thermodynamic equilibrium conditions and the plasma ablation is stoichiometric. The Boltzmann plot method was used to evaluate the plasma temperature, and the Stark broadened profiles were used to determine the electron density. An algorithm based on the experimentally measured values of the intensity of spectral lines and the basic laws of plasma physics was developed for the determination of Cu, Zn, and Pb concentrations in the brass sample. The concentrations C{sub CF-LIBS} calculated by CF-LIBS and the certified concentrations C{sub certified} were very close.« less
  • The elemental content of the superficial and inner enamel as well as that of dentin was analyzed using laser-induced breakdown spectroscopy (LIBS) and x-ray photoelectron spectroscopy (XPS) of bleached and unbleached tooth specimens. It is thus clear from the spectral analysis using both the LIBS and XPS technique that elemental changes (though insignificant within the scopes of this study) of variable intensities do occur on the surface of the enamel and extend deeper to reach dentin. The results of the LIBS revealed a slight reduction in the calcium levels in the bleached compared to the control specimens in all themore » different bleaching groups and in both enamel and dentin. The good correlation found between the LIBS and XPS results demonstrates the possibility of LIBS technique for detection of minor loss in calcium and phosphorus in enamel and dentin.« less
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