铀元素的激光诱导击穿光谱测量分析

doi:10.3964/j.issn.1000-0593(2023)01-0057-05

Abstract
References
Related Citation (15)

Download: PDF (2037 KB)
Export: BibTeX | EndNote (RIS)

Abstract To promote the application of LIBS technology in the detection of trace heavy metals and nuclear pollution detection, and improve the sensitivity and accuracy of detection, laser double-pulse LIBS technology and photoelectric double-pulse LIBS technology were used to analyze the uranium elements in soil and silica respectively. Firstly, optimizing the laser pulse energy, voltage and acquisition delay parameters to improve the intensity and signal-to-noise ratio of the characteristic spectrum of uranium; Then, under the conditions of optimized experimental parameters, the soil samples and silica samples containing different concentrations of uranium were analyzed. Two characteristic spectral lines of uranium element UII 367.01 nm and UII 454.36 nm were selected as the analysis line, and the calibration curve was established through the linear relationship between the uranium element concentration and the characteristic spectral line intensity. Under the condition of laser double pulse excitation, laser 1 was used as the pre-pulse, the main parameters were 1 064 nm, 90 mJ, 9.2 ns, and laser 2 was used as the reheating pulse, the main parameters are 355 nm, 50 mJ, 8 ns. The time interval between the two pulses is 800 ns, and the spectral acquisition is delayed by 1 μs, the lower detection limits of the concentration of uranium in the soil and silica samples were 572 and 110 mg·kg^-1, respectively, and the goodness of fit value R² were respectively 0.958 and 0.999. Under the condition of photoelectric double pulse excitation, the laser pulse was used as the pre-pulse, the main parameters were 355 nm, 50 mJ, 8 ns, the high-voltage electric pulse was used as the reheating pulse, the main parameters were 3 900 V, square wave, pulse width 50 μs, the time interval of the two pulses 1 μs. The lower detection limits of the concentration of uranium in soil and silica samples were 108 and 64 mg·kg^-1, and the goodness-of-fit values R² were 0.991 and 0.997, respectively. The research results show that under the same excitation conditions, the characteristic spectrum of uranium has an obvious matrix effect, which has higher spectral intensity, lower detection limit and higher goodness of fit value in silica samples. Compared with double laser pulse, the photoelectric double pulse can significantly enhance the intensity, stability and signal-to-noise ratio of the characteristic spectrum of uranium element, and the optical path of the photoelectric double pulse system is simpler has an important reference for the development and application of LIBS technology significance. The research method and results can provide technical support for detecting heavy metal pollution in soil and the emergency monitoring of soil and aerosol in the event of nuclear leakage.

Key words：Spectroscopy; Laser-induced breakdown spectroscopy; Laser double-pulse technology; Photoelectric double-pulse technology; Uranium

Received: 2021-11-11 Accepted: 2022-04-22

ZTFLH:

O433.4

Corresponding Authors: QIU Rong E-mail: 43951700@qq.com

Cite this article:

ZHANG Zhi-wei,QIU Rong,YAO Yin-xu, et al. Measurement and Analysis of Uranium Using Laser-Induced Breakdown Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(01): 57-61.

URL:

https://www.gpxygpfx.com/EN/10.3964/j.issn.1000-0593(2023)01-0057-05 OR https://www.gpxygpfx.com/EN/Y2023/V43/I01/57

[1] SHAO Yang，YANG Guo-sheng，ZHANG Ji-long，et al(邵阳，杨国胜，张继龙，等). Acta Chimica Sinica(化学学报)，2021，79(6): 716.
[2] Ibourki Mohamed，Gharby Said，Guillaume Dominique，et al. Chemical Data Collections，2021，35: 100772.
[3] Ashraf Ahmadreza，Saion Elias，Gharibshahi Elham，et al. Applied Radiation and Isotopes, 2018，132: 222.
[4] Povarov Vladimir G，Kopylova Tatyana N，Sinyakova Maria A，et al. ACS Omega，2021，6(38): 24595.
[5] Shaik A K，Epuru N R，Syed H，et al. Optics Express，2018，26(7): 8069.
[6] YANG Yan-wen，YAN Cheng-lin，XU Ding, et al(杨雅雯，严承琳，徐鼎，等). Metallurgical Analysis(冶金分析)，2020，40(12): 14.
[7] LI Hong-lian，KANG Sha-sha，XIE Hong-jie，et al(李红莲，康沙沙，谢红杰，等). Journal of Optoelectronics·Laser(光电子·激光)，2020，31(10): 1036.
[8] Williams A，Phongikaroon S. Applied Spectroscopy，2018, 72(7): 1029.
[9] Skrodzki P J，Becker J R，Diwakar P K，et al. Applied Spectroscopy，2016，70(3): 467.
[10] Han Seul-Ki，Park Se-Hwan，Ahn Seong-Kyu. Plasma Science and Technology，2020，(7): 128.
[11] DONG Bo，HE Xiao-yong，WANG Ya-rui，et al(董博, 何小勇, 王亚蕊, 等). Acta Photonica Sinica(光子学报)，2018，47(8): 47.
[12] WANG Xiang-li，WANG Yan-ling，GAO Zhi-xing，et al(王祥丽, 王燕伶, 高智星, 等). Atomic Energy Science and Technology(原子能科学技术), 2022, 56(1): 9.
[13] CUI Zu-wen，XIANG Yu-lin，ZHANG Yu-xuan，et al(崔祖文, 向昱霖, 张宇璇, 等). Laser Technology(激光技术)，2021，45(3): 331.
[14] WU Ri-na，NING Ri-bo，DAI Qin，et al(乌日娜, 宁日波, 岱钦, 等). New Lasers and LIBS Technology(新型激光器与LIBS技术). Beijing: Publishing House of Electronics Industry(北京：电子工业出版社)，2016. 192.
[15] Wallis F J，Chadwick B L，Morrison R J S. Applied Spectroscopy，2000，54(8): 1231.
[16] ZHU Zhi-feng，LI Bo，GAO Qiang，et al(朱志峰, 李博, 高强, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2021，41(8): 2633.
[17] Eppler A S，Cremers D A，Hickmott D D，et al. Applied Spectroscopy, 1996, 50(9): 1175.