Abstract:
This study deals with the determination of ratios of light metals (Li, Na, K, Mg, and Ca) in zooplankton (Calanus spp.) by calibration free laser-induced breakdown spectroscopy, assuming local thermodynamic equilibrium. The temperature of laser-induced plasma of zooplankton was derived from rotation-vibration bands of CN, and the electron density was calculated by Stark broadening of Mg I 383.23 nm, Li I 610.37 nm, and Ca II 396.85 nm lines. The synthetic spectra calculated with a radiation transport model for the experimental values of T and Ne were used for a selection of analytical atomic lines free from self-absorption. We compared the obtained data with the results of atomic emission and mass spectrometry with inductively coupled plasma. We also discussed the influence of ionization equilibrium on the accuracy of the results. We propose the presented method for direct semi-quantitative determination of Li, Mg, and Ca ratios in zooplankton.
The study was supported by the Russian Foundation for Basic Research (project no. 18-33-01297). Analyzes of zooplankton by ICP-AES and ICP-MS and analyzes of organic carbon and ash were supported by the Russian Science Foundation (project no. 18-77-00064).
Citation:
N. I. Sushkov, N. V. Lobus, I. V. Seliverstova, T. A. Labutin, “Calibration free laser-induced breakdown spectroscopy of zooplankton”, Optics and Spectroscopy, 128:9 (2020), 1231–1237; Optics and Spectroscopy, 128:9 (2020), 1343–1349
This publication is cited in the following 5 articles:
Nikolai I. Sushkov, Timur A. Labutin, “Laser-induced breakdown spectroscopy of biological tissues: Plasma diagnostics and a comparison of quantification approaches”, Spectrochimica Acta Part B: Atomic Spectroscopy, 211 (2024), 106834
N. I. Sushkov, N. N. Kurian, S. N. Anuchin, S. M. Zaytsev, “Combined Use of Laser-Induced Breakdown and X-Ray Fluorescence Spectroscopies for Elemental Analysis of Aquatic Organisms”, J Appl Spectrosc, 90:6 (2024), 1273
Dennis Silva Ferreira, Diego Victor Babos, Mauro Henrique Lima-Filho, Heloisa Froehlick Castello, Alejandro C. Olivieri, Fabiola Manhas Verbi Pereira, Edenir Rodrigues Pereira-Filho, “Laser-induced breakdown spectroscopy (LIBS): calibration challenges, combination with other techniques, and spectral analysis using data science”, J. Anal. At. Spectrom., 2024
Nikolai I. Sushkov, Gábor Galbács, Krisztián Fintor, Nikolay V. Lobus, Timur A. Labutin, “A novel approach for discovering correlations between elemental and molecular composition using laser-based spectroscopic techniques”, Analyst, 147:14 (2022), 3248
Siyu Zhang, Zhenlin Hu, Zhifang Zhao, Feng Chen, Yun Tang, Ziqian Sheng, Deng Zhang, Zhanjie Zhang, Honglin Jin, Huangsheng Pu, Lianbo Guo, “Quantitative analysis of mineral elements in hair and nails using calibration-free laser-induced breakdown spectroscopy”, Optik, 242 (2021), 167067