Author: McIntyre, D. L.

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4 articles found

Determination of Rare Earth Elements in Geological Samples Using Laser-Induced BreakdownSpectroscopy (LIBS)

Author: Bhatt, C. R. ; et. al.

Journal: Applied Spectroscopy (2018)

Applications Chemometrics

DOI: 10.1177/0003702817734854

Authors
Goueguel, C. L. ; Jain, J. C. ; McIntyre, D. L. ; Singh, J. P.

Keywords

Rare earth elements; REE; geological samples; laser-induced breakdown spectroscopy; LIBS;GLASSES; COAL

Abstract

Laser-induced breakdown spectroscopy (LIBS) was used to detect rare earth elements (REEs) in natural geological samples. Low and high intensity emission lines of Ce, La, Nd, Y, Pr, Sm, Eu, Gd, and Dy were identified in the spectra recorded from the samples to claim the presence of these REEs. Multivariate analysis was executed by developing partial least squares regression (PLS-R) models for the quantification of Ce, La, and Nd. Analysis of unknown samples indicated that the prediction results of these samples were found comparable to those obtained by inductively coupled plasma mass spectrometry analysis. Data support that LIBS has potential to quantify REEs in geological minerals/ores.

Area:

Geology

Material:

Mineral ; Ore ; Rock

Elements:

Emmision lines:

Laser-Induced Breakdown Spectroscopy: Advanced Analytical Technique

Author: Bhatt, C. R. ; et. al.

Journal: Molecular and Laser Spectroscopy: Advances and Applications (2018)

Applications

DOI: 10.1016/B978-0-12-849883-5.00012-7

Authors
Ghany, C. T. ; McIntyre, D. L. ; Singh, J. P. ; Yueh, F. Y.

Keywords

INDUCED PLASMA SPECTROSCOPY; QUANTITATIVE-ANALYSIS; ELEMENTAL ANALYSIS; SPACE EXPLORATION; PLANT MATERIALS; LIBS; SPECTROMETRY; METALS; THICKNESS; QUALITY

Abstract

Area:

Industry

Material:

Nanocarbon

Elements:

Lines [nm]:

N I 742.36 nm N I 744.23 nm N I 746.83 nm N I 821.63 nm

Lines [nm]:

O I 777.19 nm O I 777.42 nm O I 777.54 nm

Lines [nm]:

H I 656.28 nm H I 486.14 nm

Lines [nm]:

Na I 589.00 nm Na I 589.59 nm

Lines [nm]:

K I 766.49 nm K I 769.90 nm

Emmision lines:
H I 486.14 nm
Na I 589.00 nm
Na I 589.59 nm
H I 656.28 nm
N I 742.36 nm
N I 744.23 nm
N I 746.83 nm
K I 766.49 nm
K I 769.90 nm
O I 777.19 nm
O I 777.42 nm
O I 777.54 nm
N I 821.63 nm

Measurement of Eu and Yb in aqueous solutions by underwater laser induced breakdown spectroscopy

Author: Bhatt, C. R. ; et. al.

Journal: Spectrochimica Acta Part B: Atomic Spectroscopy (2017)

Applications

DOI: 10.1016/j.sab.2017.09.009

Authors
Goueguel, C. L. ; Jain, J. C. ; McIntyre, D. L. ; Singh, J. P.

Keywords

RARE-EARTH-ELEMENTS; COLLOIDS; LIQUIDS

Abstract

In this paper, we report the use of laser induced breakdown spectroscopy (LIBS) to detect dissolved Eu and Yb in bulk aqueous solutions. Ten strong emission lines of Eu and one strong emission line of Yb were identified in the underwater LIBS spectra obtained by using Czerny-Turner spectrometer within the wavelength range of 375-515 nm, Temporal evolution of plasma and the effect of laser pulse energy on the spectral emission were studied. Calibration curves using the concentration range from 500 to 10,000 ppm were developed and limits of detection for Eu and Yb were estimated to be 209 and 156 ppm, respectively. (C) 2017 Elsevier B.V. All rights reserved.

Area:

Geology ; Industry

Material:

Aqueous solution

Elements:

Lines [nm]:

Eu II 381.97 nm Eu II 390.71 nm Eu II 393.05 nm Eu II 397.20 nm Eu II 412.97 nm Eu II 420.51 nm Eu II 443.56 nm Eu I 459.40 nm Eu I 462.72 nm Eu I 466.19 nm

Lines [nm]:

Yb I 398.80 nm

Emmision lines:
Eu II 381.97 nm
Eu II 390.71 nm
Eu II 393.05 nm
Eu II 397.20 nm
Yb I 398.80 nm
Eu II 412.97 nm
Eu II 420.51 nm
Eu II 443.56 nm
Eu I 459.40 nm
Eu I 462.72 nm
Eu I 466.19 nm

Analysis of charcoal blast furnace slags by laser-induced breakdown spectroscopy

Author: Bhatt, C. R. ; et. al.

Journal: Applied Optics (2017)

Applications Chemometrics

DOI: 10.1364/AO.56.007789

Authors
Edenborn, H. M. ; Goueguel, C. L. ; Jain, J. C. ; McIntyre, D. L.

Keywords

RARE-EARTH-ELEMENTS; SPACE EXPLORATION; IRON OBJECTS; STEEL WORKS; ICP-MS; LIBS; SPECTROMETRY; UNIVARIATE; SAMPLES; CURVES

Abstract

Laser-induced breakdown spectroscopy (LIBS) was used for the analysis of charcoal blast furnace slags. Plasma was generated by an application of a 1064 nm wavelength Nd:YAG laser beam to the surface of pellets created from the slags. The presence of Al, Ca, Fe, K, Mg, Mn, and Si was determined by identifying their characteristic spectral signatures. Multivariate analysis was performed for the quantification of these elements. The predicted LIBS results were found in agreement with the inductively coupled plasma optical emission spectrometry analysis. The limit of detection for Al, Ca, Fe, K, Mg, Mn, and Si was calculated to be 0.10%, 0.22%, 0.02%, 0.01%, 0.01%, 0.005%, and 0.18%, respectively. (C) 2017 Optical Society of America

Area:

Industry

Material:

Furnace slag

Elements:

Emmision lines:

Author: McIntyre, D. L.

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Co-author: McIntyre, D. L.

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