Combined use of laser-induced breakdown and X-ray fluorescence spectroscopies for elemental analysis of aquatic organisms

Sushkov, N.I.; Kurian, N.N.; Anuchin, S.N.; Zaytsev, S.M.

Авторы: Sushkov N.I., Kurian N.N., Anuchin S.N., Zaytsev S.M.
Журнал: Journal of Applied Spectroscopy
Том: 90
Номер: 6
Год издания: 2024
Издательство: Springer-Verlag
Местоположение издательства: Heidelberg, Germany
Первая страница: 1273
Последняя страница: 1280
DOI: 10.1007/s10812-024-01664-5
Аннотация: Elemental chemical analysis of aquatic organisms is necessary for biochemical and ecological studies, as well as for pollution monitoring. To this end, mainly wet analytical methods are used. However, direct analysis is possible by techniques such as X-ray fluorescence spectroscopy (XRF) and laser-induced breakdown spectroscopy (LIBS), which are mutually complementary in terms of analytical capabilities. Our study deals with the comparison of LIBS and XRF performance in the calibration-based determination of macro- and microelements (P, Cl, K, Ca; B, Mn, Fe, Cu, Zn, and Sr) in organs and tissues of fishes and aquatic plants (bream, pike, horsetail, and hornwort). It has turned out necessary to normalise the signals of elements to the intensity of incoherently scattered radiation (in XRF) and to that of Balmer H-alpha emission line (in LIBS) to account for matrix effects. The comparison of the obtained data with the results of reference analysis by inductively coupled plasma optical emission spectroscopy (ICP-OES) has shown that LIBS was superior to XRF in terms of trueness for relatively light elements (P, K, Ca, Mn, Fe, and Cu). For heavier elements (Zn and Sr), this advantage moved to XRF. The combination of LIBS and XRF makes possible the broadening of the range of measurable elements, and in some cases (such as for P, K, Mn, Fe, Zn, and Sr), wet chemical decomposition becomes unnecessary, which is important for the simplification of analytical procedures.
Добавил в систему: Сушков Николай Иванович

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