Determination of nitrogen in water based on laser‐induced breakdown spectroscopy

YANG Xinyan; WANG Xin; LI Dongdong; WANG Xi; ZHU Peng; LIU Chang; ZHANG Xu; REN Hongmei; QIN Zhengbo; HUA Zefeng; ZHENG Xianfeng

doi:10.3969/j.issn.1007-5461.2024.03.012

Chinese Journal of Quantum Electronics, Volume. 41, Issue 3, 506(2024)

Determination of nitrogen in water based on laser‐induced breakdown spectroscopy

YANG Xinyan^1,2、*, WANG Xin^1,2, LI Dongdong^1,2, WANG Xi³, ZHU Peng^1,2, LIU Chang^1,2, ZHANG Xu^1,2, REN Hongmei^1,2, QIN Zhengbo^1,2, HUA Zefeng^1,2, and ZHENG Xianfeng^1,2

Author Affiliations

¹School of Physics and Electronic Information, Anhui Normal University, Wuhu 241002, China

²Anhui Province Key Laboratory for Control and Applications of Optoelectronic Information Materials, Wuhu 241002, China

³Electronic Countermeasure Institute, National University of Defense Technology, Hefei 230037, China

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Figures & Tables(8)

Fig. 1. Schematic diagram of LIBS experimental setup

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Fig. 2. LIBS spectrum of N element in NH₄Cl solution. (a) Without pump; (b) With pump

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Fig. 3. LIBS spectrum of standard solution containing 200 mg/L N at different gas. (a) Before deduction; (b) After deduction

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Fig. 4. Trend of SBR of N analytical line with (a) liquid velocity and (b) gas velocity

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Fig. 5. Calibration curve of N. (a) Without pump; (b) With pump

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Fig. 6. Effect of the pump on the spectral stability of N I 746.831 nm absolute intensity

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Fig. 7. Correlation curves of the predicted concentration versus the prepared concentration. (a) Without pump; (b) With pump

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Table 1. Fitting parameters for the predicted concentration and the prepared concentration of N element in water with and without syringe pump (R², E_R and E_RMSCV)
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Table 1. Fitting parameters for the predicted concentration and the prepared concentration of N element in water with and without syringe pump (R², E_R and E_RMSCV)
Accuracy Without pump With pump Improvement/%
R² 0.2830 0.9043 219.54
Average E_R/% 45.80 10.33 77.45
E_RMSCV / (mg·L^-1) 23.96 4.28 82.14

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Xinyan YANG, Xin WANG, Dongdong LI, Xi WANG, Peng ZHU, Chang LIU, Xu ZHANG, Hongmei REN, Zhengbo QIN, Zefeng HUA, Xianfeng ZHENG. Determination of nitrogen in water based on laser‐induced breakdown spectroscopy[J]. Chinese Journal of Quantum Electronics, 2024, 41(3): 506

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Paper Information

Category: Special Issue on Key Technologies and Applications of LIBS

Received: Nov. 10, 2023

Accepted: --

Published Online: Jul. 17, 2024

The Author Email: Xinyan YANG (xinyanyang@ahnu.edu.cn)

DOI:10.3969/j.issn.1007-5461.2024.03.012

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Fitting parameters for the predicted concentration and the prepared concentration of N element in water with and without syringe pump (R2, ER and ERMSCV)

Table 1. Fitting parameters for the predicted concentration and the prepared concentration of N element in water with and without syringe pump (R2, ER and ERMSCV)

Table 1. Fitting parameters for the predicted concentration and the prepared concentration of N element in water with and without syringe pump (R², E_R and E_RMSCV)

Table 1. Fitting parameters for the predicted concentration and the prepared concentration of N element in water with and without syringe pump (R², E_R and E_RMSCV)