Application of fiber optic high repetition rate laser-ablation spark-induced breakdown spectroscopy on the elemental analysis of aluminum alloys

Xiaoyong He; Runhua Li; Yuqi Chen

doi:10.1364/AO.58.008522

Applied Optics
Vol. 58,
Issue 31,
pp. 8522-8528
(2019)
•https://doi.org/10.1364/AO.58.008522

Application of fiber optic high repetition rate laser-ablation spark-induced breakdown spectroscopy on the elemental analysis of aluminum alloys

Xiaoyong He, Runhua Li, and Yuqi Chen

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Xiaoyong He, Runhua Li, and Yuqi Chen, "Application of fiber optic high repetition rate laser-ablation spark-induced breakdown spectroscopy on the elemental analysis of aluminum alloys," Appl. Opt. 58, 8522-8528 (2019)

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Abstract

Fiber optic high repetition rate laser-ablation spark-induced breakdown spectroscopy was applied to realize elemental analysis of aluminum alloys. A compact fiber laser was used as source of laser-ablation and spark discharge was used to enhance the atomic emission of the laser-induced plasma. Plasma emission spectra were recorded with a compact fiber spectrometer in a nongated signal recording mode. Calibration curves of Cr, Cu, Mn, Mg, and Zn in aluminum alloys were built under appropriate experimental conditions and the detection limits of these elements were determined to be 4.4, 5.6, 4.9, 8.3, and 31.1 ppm, respectively. Compared to those obtained in fiber optic high repetition rate laser-induced breakdown spectroscopy using the same fiber laser, a 3–18 improvement factor in the detection limit has been demonstrated. This system is compact and cost effective, and the technique can be applied to rapid and convenient element analysis of different alloy samples.

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Sample No.	Cr	Cu	Mn	Mg	Zn
GBW02215	0.15	0.19	0.010	1.00	0.011
GBW02216	0.10	0.15	0.051	0.81	0.046
GBW02217	0.05	0.10	0.099	0.60	0.089
GBW02218	0.010	0.053	0.15	0.39	0.14
GBW02219	0.0047	0.016	0.21	0.21	0.20

		HRR LIBS			HRR LA-SIBS
Element	Analytical line	$σ_{B}$	$s$	LOD (ppm)	$σ_{B}$	$s$	LOD (ppm)
Cr	425.43 nm	4.9	2345.6	62.7	19.6	$1.3 \times 10^{5}$	4.4
Cu	324.75 nm	2.3	974.4	70.8	3.3	$1.8 \times 10^{4}$	5.6
Mn	403.31 nm	1.6	547.7	87.6	21.4	$1.3 \times 10^{5}$	4.9
Mg	285.21 nm	0.4	132.5	90.6	0.8	$2.9 \times 10^{3}$	8.3
Zn	334.50 nm	1.4	194.0	77.3	12.2	$1.2 \times 10^{4}$	31.1

Element	$λ / n m$	This work	Other works
Cr	425.43	4.4	10.8[22]; 10[38]
Cu	325.75	5.6	6.5[22]; 6.2[39]; 17.49[40]
Mn	403.31	4.9	4.4[22]; 6.7[39]
Mg	285.21	8.3	1.1[22]; 2.6[38]
Zn	334.50	31.1	48.6[39]; 38[41]

Sample No.	Cr	Cu	Mn	Mg	Zn
GBW02215	0.15	0.19	0.010	1.00	0.011
GBW02216	0.10	0.15	0.051	0.81	0.046
GBW02217	0.05	0.10	0.099	0.60	0.089
GBW02218	0.010	0.053	0.15	0.39	0.14
GBW02219	0.0047	0.016	0.21	0.21	0.20

		HRR LIBS			HRR LA-SIBS
Element	Analytical line	$σ_{B}$	$s$	LOD (ppm)	$σ_{B}$	$s$	LOD (ppm)
Cr	425.43 nm	4.9	2345.6	62.7	19.6	$1.3 \times 10^{5}$	4.4
Cu	324.75 nm	2.3	974.4	70.8	3.3	$1.8 \times 10^{4}$	5.6
Mn	403.31 nm	1.6	547.7	87.6	21.4	$1.3 \times 10^{5}$	4.9
Mg	285.21 nm	0.4	132.5	90.6	0.8	$2.9 \times 10^{3}$	8.3
Zn	334.50 nm	1.4	194.0	77.3	12.2	$1.2 \times 10^{4}$	31.1

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