Počet záznamů: 1
Geochemical mapping in polluted floodplains using in situ X-ray fluorescence analysis, geophysical imaging, and statistics: Surprising complexity of floodplain pollution hotspot
- 1.
SYSNO ASEP 0495737 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Geochemical mapping in polluted floodplains using in situ X-ray fluorescence analysis, geophysical imaging, and statistics: Surprising complexity of floodplain pollution hotspot Tvůrce(i) Hošek, Michal (UACH-T) SAI, ORCID, RID
Matys Grygar, Tomáš (UACH-T) RID, SAI, ORCID
Elznicová, J. (CZ)
Faměra, Martin (UACH-T) SAI, ORCID, RID
Popelka, J. (CZ)
Matkovič, J. (CZ)
Kiss, T. (CZ)Celkový počet autorů 7 Zdroj.dok. Catena. - : Elsevier - ISSN 0341-8162
Roč. 171, DEC (2018), s. 632-644Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Geochemical mapping ; Contamination ; Electric resistivity tomography ; Dipole electromagnetic profiling ; Portable X-ray fluorescence ; Floodplain Vědní obor RIV DD - Geochemie Obor OECD Environmental sciences (social aspects to be 5.7) CEP GA15-00340S GA ČR - Grantová agentura ČR Institucionální podpora UACH-T - RVO:61388980 UT WOS 000447107900057 EID SCOPUS 85051264267 DOI 10.1016/j.catena.2018.07.037 Anotace This study is focused on a pollution hotspot in a floodplain impacted by uranium mining in the second half of the 20th century. To image the internal structure of the hotspot, we performed surface gamma activity mapping, in situ X-ray fluorescence spectroscopic analysis (XRF) using a portable instrument and manually obtained sediment cores, and electric resistivity imaging of the shallow subsurface with the help of electric resistivity tomography (ERT) and dipole electromagnetic profiling (DEMP). We used two approaches aimed at deciphering the origin of the pollution hotspot: (i) surface pollution mapping and (ii) identification of the deeper lying lithogenetic units. The description of the floodplain subsurface was supported by optically stimulated luminescence (OSL) dating. The surface mapping approach was found insufficient to visualise the hotspot and understand its origin. We recognised deposition non-linear in time (or temporally independent) of younger over-bank fines, including mining pollutants over considerably older channel sediments. Our work documents the value of dense geochemical mapping for documentation of fluvial pollution (accessible by portable XRF) as well as the need to understand the structure of the floodplain subsurface (accessible by electric resistivity imaging) and thereby rationalise the hotspot internal structure. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2019
Počet záznamů: 1