The application of micro-xRF-SR analysis for elements spreading investigation at benthos organisms from small rivers of the Novosibirsk area

Baturina Natalya, Darin Fedor, Rakshun Yakov, Sorokoletov Dmitry

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

In our research 20 benthic samples were collected from small rivers and streams from industrial and nature areas of Novosibirsk region. Benthic invertebrates were fixed at 75% ethanol and identified up to the family taxonomical level at the laboratory. Samples were dried up to stable weight, animals from each taxonomical group were placed at the conductive tape for further investigation. The analysis was carried out using the μXRF-SR according to the standard certified method at the experimental station "Elemental analysis" in the SCSTR (Budker INP SB RAS). Experimental conditions: excitation energy 21 keV, dimensions of the exciting radiation beam 0.5 mm in height and 10 mm in width of the sample. Measuring time for one point was 100 s. The contents of more than 20 elements, including essential Cl, K, Ca, Mn, Fe, and trace elements Ti, V, Cr, Ni, Cu, Zn, As, Rb, Sr, Y, Zr, Nb, Mo, Pb were determined. The concentration range for essential elements was 150-500000 ppm, for trace elements 0.3-15000 ppm. Scanning was done in two directions - the length and width of the sample animal. The profile of scanning was compared with photos from the electronic microscope. That gave us an opportunity to find out a specific locus of accumulation of some elements. Results obtained shown patchy spreading distribution of elements in the samples, that could be interpreted by various forms of chemical compounds, which included explored elements. For more complete result 3d scanning with the function of focused X-ray optics could be used.

Original languageEnglish
Title of host publicationSynchrotron and Free Electron Laser Radiation
Subtitle of host publicationGeneration and Application, SFR 2020
EditorsBoris Knyazev, Nikolay Vinokurov
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735440333
DOIs
Publication statusPublished - 17 Nov 2020
Event2020 Internetional Conference on Synchrotron and Free Electron Laser Radiation: Generation and Application, SFR 2020 - Novosibirsk, Russian Federation
Duration: 13 Jul 202016 Jul 2020

Publication series

NameAIP Conference Proceedings
Volume2299
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference2020 Internetional Conference on Synchrotron and Free Electron Laser Radiation: Generation and Application, SFR 2020
CountryRussian Federation
CityNovosibirsk
Period13.07.202016.07.2020

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