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Study of TiO2 Nanoparticle Generation for Follow-up Inhalation Experiments with Laboratory Animals.
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SYSNO ASEP 0463828 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Study of TiO2 Nanoparticle Generation for Follow-up Inhalation Experiments with Laboratory Animals. Tvůrce(i) Moravec, Pavel (UCHP-M) RID, ORCID, SAI
Schwarz, Jaroslav (UCHP-M) RID, ORCID, SAI
Vodička, Petr (UCHP-M) RID, ORCID, SAI
Koštejn, Martin (UCHP-M) RID, SAI, ORCIDZdroj.dok. Aerosol Science and Technology. - : Taylor & Francis - ISSN 0278-6826
Roč. 50, č. 10 (2016), s. 1068-1076Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova chemical-vapor-deposition ; fine particles ; precursors Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP GBP503/12/G147 GA ČR - Grantová agentura ČR Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000386209700006 EID SCOPUS 84987642681 DOI 10.1080/02786826.2016.1224803 Anotace A method of long-lasting TiO2 nanoparticle generation was tested for use in follow-up studies of the health impacts of nanoparticles on laboratory animals during several weeks’ long exposure experiments. Nanoparticles were synthesized in an externally heated tube reactor by pyrolysis and oxidation of titanium tetraisopropoxide. Particle production was studied under varying reactor temperature, reactor flow rate, and precursor vapor pressure. A total of 264 h of particle generation were performed in four experimental campaigns using one batch of precursor without an observable decrease of particle production. As a result, particle production with number concentrations high above 1.0 £ 107 #/cm3 and with primary particle sizes well below 50 nm could be achieved in most of the investigated experimental conditions. Maximum of particle mass concentration reached the value 9500 mg/m3, which corresponds with emission rate 29 mg/min. The dependence of nanoparticle production and characteristics on experimental conditions was evaluated and the most suitable parameters for exposure experiments were specified. A comparison of the results with data from the literature shows that the material of the reactor plays a significant role in the process of particle formation. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2017
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