Počet záznamů: 1
LIBS assessment of spatial photon-upconversion nanoparticle distribution in model plants (R. sativus and L. minor)
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SYSNO ASEP 0511557 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název LIBS assessment of spatial photon-upconversion nanoparticle distribution in model plants (R. sativus and L. minor) Tvůrce(i) Modlitbová, P. (CZ)
Novotný, K. (CZ)
Hlaváček, Antonín (UIACH-O) ORCID
Pořízka, P. (CZ)
Kaiser, J. (CZ)Celkový počet autorů 5 Zdroj.dok. EMSLIBS 2019 Book of abstracts. - Praha : Spektroskopická společnost Jana Marka Marci, 2019 - ISBN 978-80-88195-13-9 Rozsah stran s. 78-79 Poč.str. 2 s. Forma vydání Online - E Akce EMSLIBS 2019. Euro-Mediterranean Symposium on Laser-Induced Breakdown Spectroscopy /10./ Datum konání 08.09.2019 - 13.09.2019 Místo konání Brno Země CZ - Česká republika Typ akce EUR Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova photonupconversion nanoparticles ; luminescent nanomaterials ; bioaccumulation Vědní obor RIV CB - Analytická chemie, separace Obor OECD Analytical chemistry CEP GJ18-03367Y GA ČR - Grantová agentura ČR Institucionální podpora UIACH-O - RVO:68081715 Anotace In the present study, radish (Raphanus sativus L.) and common duckweed (Lemna minor L.) were treated with an aqueous dispersion of carboxylated silica-coated photon-upconversion nanoparticles containing rare-earth elements (Y, Yb, and Er). The total content of rare earths and their bioaccumulation factors were determined in the root, hypocotyl, and leaves of R. sativus after 72 hours, and in L. minor fronds after 168 hours. In R. sativus, translocation factors were determined as the ratio of rare earths content in hypocotyl versus roots and in leaves versus hypocotyl. The lengths of the root and hypocotyl in R. sativus, as well as the frond area in L. minor were monitored as toxicity end points. To distinguish rare-earth bioaccumulation patterns, two-dimensional maps of elemental distribution in the whole R. sativus plant and in L. minor fronds were obtained by using laser-induced breakdown spectroscopy with a lateral resolution of 100 μm. Obtained results revealed that the tested nanoparticles became adsorbed on L. minor fronds and R. sativus roots, and got transferred from roots through the hypocotyl into leaves in R. sativus. Our results show that bioaccumulation patterns and spatial distribution of rare earths in nanoparticle-treated plants differ from those of positive control (the mixture of YCl3, YbCl3, and ErCl3). Pracoviště Ústav analytické chemie Kontakt Iveta Drobníková, drobnikova@iach.cz, Tel.: 532 290 234 Rok sběru 2020
Počet záznamů: 1