Elemental composition analysis of granite rocks using LIBS and LA-TOF-MS

Zeshan Adeel Umar; Nasar Ahmed; Rizwan Ahmed; Usman Liaqat; Muhammad Aslam Baig

doi:10.1364/AO.57.004985

Applied Optics
Vol. 57,
Issue 18,
pp. 4985-4991
(2018)
•https://doi.org/10.1364/AO.57.004985

Elemental composition analysis of granite rocks using LIBS and LA-TOF-MS

Zeshan Adeel Umar, Nasar Ahmed, Rizwan Ahmed, Usman Liaqat, and Muhammad Aslam Baig

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Zeshan Adeel Umar, Nasar Ahmed, Rizwan Ahmed, Usman Liaqat, and Muhammad Aslam Baig, "Elemental composition analysis of granite rocks using LIBS and LA-TOF-MS," Appl. Opt. 57, 4985-4991 (2018)

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Abstract

Qualitative and quantitative analysis of the raw granite rocks acquired from deposits in the Hunza district, Gilgit area of Pakistan were studied using laser-induced breakdown spectroscopy (LIBS) and laser ablation time-of-flight mass spectrometry (LA-TOF-MS). The optical emission spectra of the granite rocks used in artificial jewelry and for flooring tiles show the emission lines of (Si, Ca, K, Fe, Mg, Al, Na, and Li) and (Si, Ca, K, Fe, Mg, Al, Ti, Na, Ba, and Li), respectively. The mass spectra of these granite rocks were also studied with the LA-TOF-MS, revealing analogous elemental compositions. The results obtained using LIBS and LA-TOF-MS for the raw granite samples display their ability as powerful and complementary tools for the compositional analysis of the geological samples.

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Wavelength $λ (nm)$	Transition Probability ( $10^{7} s^{- 1}$ )	$E_{k} (eV)$	$g_{k}$
Ca I
487.813	1.88	5.25	7
526.556	4.4	4.88	3
527.027	5.0	4.88	5
558.197	0.6	4.74	7
558.876	4.9	4.74	7
559.447	3.8	4.74	5
559.849	4.3	4.74	3
560.129	0.86	4.74	5
560.285	1.4	4.74	3
585.745	6.6	5.05	5
612.22	2.87	3.91	3
616.217	4.77	3.91	3
616.644	2.2	4.53	1
616.956	1.9	4.54	5
643.900	5.3	4.45	9
644.98	0.9	4.44	5
646.257	4.7	4.44	7
647.166	0.59	4.44	7
Fe I
296.69	2.72	4.18	11
299.44	4.39	4.19	5
302.064	7.59	4.10	9
303.739	2.91	4.19	5
304.76	2.84	4.15	7
306.72	3.12	4.96	7
307.57	3.14	4.99	5
309.997	0.82	4.91	9
356.538	4.29	4.44	9
361.877	7.22	4.42	7
370.557	0.32	3.39	7
374.556	1.15	3.4	7
375.823	6.34	4.26	7
381.584	11.2	4.73	7
426.05	3.99	5.3	11
438.354	5.0	4.31	11
492.05	3.58	5.35	9

Emission Lines	Wavelength $λ (nm)$	Transition Probability ( $10^{8} s^{- 1}$ )	$E_{k} (eV)$	$g_{k}$
Sample I
Ca I	649.378	0.44	4.43	5
Mg I	383.829	1.61	5.95	7
Na I	589.995	0.616	2.1	4
Si I	390.552	0.133	5.08	3
Fe I	492.05	0.358	5.35	9
Al I	305.714	0.75	7.67	6
Li I	670.78	0.369	1.85	4
K I	766.49	3.6	4. 43	6
Sample II
Ca I	649.378	0.44	4.43	5
Mg I	383.829	1.61	5.95	7
Na I	589.995	0.616	2.1	4
Si I	390.552	0.133	5.08	3
Fe I	495.759	0.422	5.31	11
Al I	305.714	0.75	7.67	6
Li I	670.78	0.369	1.85	4
K I	766.49	3.60	4. 43	6
Ti I	503.646	0.394	3.9	9
Ba I	553.548	1.19	2.24	3

Wavelength $λ (nm)$	Transition Probability ( $10^{7} s^{- 1}$ )	$E_{k} (eV)$	$g_{k}$
Ca I
487.813	1.88	5.25	7
526.556	4.4	4.88	3
527.027	5.0	4.88	5
558.197	0.6	4.74	7
558.876	4.9	4.74	7
559.447	3.8	4.74	5
559.849	4.3	4.74	3
560.129	0.86	4.74	5
560.285	1.4	4.74	3
585.745	6.6	5.05	5
612.22	2.87	3.91	3
616.217	4.77	3.91	3
616.644	2.2	4.53	1
616.956	1.9	4.54	5
643.900	5.3	4.45	9
644.98	0.9	4.44	5
646.257	4.7	4.44	7
647.166	0.59	4.44	7
Fe I
296.69	2.72	4.18	11
299.44	4.39	4.19	5
302.064	7.59	4.10	9
303.739	2.91	4.19	5
304.76	2.84	4.15	7
306.72	3.12	4.96	7
307.57	3.14	4.99	5
309.997	0.82	4.91	9
356.538	4.29	4.44	9
361.877	7.22	4.42	7
370.557	0.32	3.39	7
374.556	1.15	3.4	7
375.823	6.34	4.26	7
381.584	11.2	4.73	7
426.05	3.99	5.3	11
438.354	5.0	4.31	11
492.05	3.58	5.35	9

Emission Lines	Wavelength $λ (nm)$	Transition Probability ( $10^{8} s^{- 1}$ )	$E_{k} (eV)$	$g_{k}$
Sample I
Ca I	649.378	0.44	4.43	5
Mg I	383.829	1.61	5.95	7
Na I	589.995	0.616	2.1	4
Si I	390.552	0.133	5.08	3
Fe I	492.05	0.358	5.35	9
Al I	305.714	0.75	7.67	6
Li I	670.78	0.369	1.85	4
K I	766.49	3.6	4. 43	6
Sample II
Ca I	649.378	0.44	4.43	5
Mg I	383.829	1.61	5.95	7
Na I	589.995	0.616	2.1	4
Si I	390.552	0.133	5.08	3
Fe I	495.759	0.422	5.31	11
Al I	305.714	0.75	7.67	6
Li I	670.78	0.369	1.85	4
K I	766.49	3.60	4. 43	6
Ti I	503.646	0.394	3.9	9
Ba I	553.548	1.19	2.24	3

Abstract

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Equations (8)

Applied Optics