Element Detection in Porphyra Yezoensis via Laser-Induced Breakdown Spectroscopy

Minglei Yang; Yuzhu Liu

doi:10.3788/LOP202259.1030001

Journals >Laser & Optoelectronics Progress >Volume 59 >Issue 10 >Page 1030001 > Article

Laser & Optoelectronics Progress
Vol. 59, Issue 10, 1030001 (2022)

Element Detection in Porphyra Yezoensis via Laser-Induced Breakdown Spectroscopy

Minglei Yang^1、2 and Yuzhu Liu^1、2、*

Author Affiliations

¹Jiangsu Key Laboratory of Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu , China

²Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing 210044, Jiangsu , China

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DOI: 10.3788/LOP202259.1030001 Cite this Article Set citation alerts

Minglei Yang, Yuzhu Liu. Element Detection in Porphyra Yezoensis via Laser-Induced Breakdown Spectroscopy[J]. Laser & Optoelectronics Progress, 2022, 59(10): 1030001 Copy Citation Text

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Fig. 1. Schematic of the experimental setup

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Spectra of porphyra yezoensis. (a) channel from 210 nm to 270 nm; (b) channel from 270 nm to 320 nm; (c) channel from 360 nm to 460 nm; (d) channel from 510 nm to 650 nm; (e) channel from 710 nm to 880 nm

Fig. 2. Spectra of porphyra yezoensis. (a) channel from 210 nm to 270 nm; (b) channel from 270 nm to 320 nm; (c) channel from 360 nm to 460 nm; (d) channel from 510 nm to 650 nm; (e) channel from 710 nm to 880 nm

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Fig. 3. Spectral contrast of unsoaked and soaked porphyra yezoensis in Pb solution. (a) Spectrum of unsoaked porphyra yezoensis; (b) spectrum of soaked porphyra yezoensis

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Fig. 4. Spectra of porphyra yezoensis soaked in lead with different concentrations

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Fig. 5. Calibration curve for Pb in porphyra yezoensis sample

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Fig. 6. Comparison between theoretical spectral intensity and actual spectral initensity

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Fig. 7. Saha-Boltzman plot of Pb spectral lines

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Fig. 8. Lorentz curve fitting for Stark widening of Pb(405.781 nm)

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Fig. 9. Results of simulation and experiment about CN molecule in the porphyra yezoensis

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Sample	$l n [I_{i j} λ / (A_{i j} g_{k})]$
Sample	368.227 nm	363.897 nm	373.926 nm	367.149 nm	357.180 nm
Average relative error /％	0.55	0.75	1.48	1.87	2.04
Sample 1	-34.530	-34.738	-36.458	-36.230	-36.941
Sample 2	-34.600	-34.822	-37.320	-37.723	-37.855
Sample 3	-34.667	-34.706	-37.196	-37.471	-37.773
Sample 4	-34.953	-35.084	-37.440	-37.958	-38.005
Sample 5	-34.497	-34.649	-36.545	-36.555	-37.016
Sample 6	-34.600	-34.602	-36.825	-37.244	-37.344
Sample 7	-34.673	-34.824	-37.674	-37.541	-37.995
Sample 8	-35.202	-35.386	-37.612	-38.702	-38.123
Sample 9	-34.515	-34.733	-36.686	-36.837	-37.198
Sample 10	-34.643	-34.872	-37.321	-37.229	-37.577
Sample 11	-34.595	-34.698	-36.944	-37.132	-37.402
Sample 12	-35.255	-35.372	-38.150	-37.699	-39.067
Theoretical value	-34.562	-34.616	-36.715	-36.813	-36.936

Table 1. Relative error analysis table of Saha-Boltzman equation

$X^{2} \sum_{}^{+} (V^{''})$	Level population
$V^{''}$ =0	0.326546
$V^{''}$ =1	0.220711
$V^{''}$ =2	0.150286
$V^{''}$ =3	0.103136
$V^{''}$ =4	0.071369
$V^{''}$ =5	0.049824
$V^{''}$ =6	0.035112
$V^{''}$ =7	0.025039
$V^{''}$ =8	0.017976

Table 2. CN molecule vibrational level populations in

X^{2} \sum_{}^{+} (V^{''})

state

Minglei Yang, Yuzhu Liu. Element Detection in Porphyra Yezoensis via Laser-Induced Breakdown Spectroscopy[J]. Laser & Optoelectronics Progress, 2022, 59(10): 1030001

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