| Zugriffsnummer | 32902 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Total synthesis of isotopically enriched Si-29 silica NPs as potential spikes for isotope dilution quantification of natural silica NPs |
| Autor(in); Institution |
Pálmai, Marcell; Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences (IMEC RCNS HAS), Budapest, HUNGARY; LGC Limited, Queens Road, Teddington, Middlesex, UK
Szalay, Roland; Institute of Chemistry, Eötvös Loránd University, Budapest, HUNGARY
Bartczak, Dorota; LGC Limited, Queens Road, Teddington, Middlesex, UK
Varga, Zoltán; Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences (IMEC RCNS HAS), Budapest, HUNGARY
Nagy, Lívia Naszályi; Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences (IMEC RCNS HAS), Budapest, HUNGARY
Gollwitzer, Christian; 7.1, Radiometrie mit Synchrotronstrahlung, PTB-Berlin
Krumrey, Michael; 7.1, Radiometrie mit Synchrotronstrahlung, PTB-Berlin
Goenaga-Infante, Heidi; LGC Limited, Queens Road, Teddington, Middlesex, UK
|
| Quelle/Jahr | Journal of Colloid and Interface Science: 445 (2015), 161 - 165 |
| ISSN | 0021-9797 |
| DOI | |
| Verlag | Amsterdam [u.a.]: Elsevier |
| Freie Schlagworte | asymmetric flow field-flow fractionation (AF4) ; ICP-MS ; SAXS ; Si-29 silica nanoparticles ; Si-29 tetraethyl orthosilicate |
| Zusammenfassung | A new method was developed for the preparation of highly monodisperse isotopically enriched Si-29 silica nanoparticles (29Si-silica NPs) with the purpose of using them as spikes for isotope dilution mass spectrometry (IDMS) quantification of silica NPs with natural isotopic distribution. Si-29 tetraethyl orthosilicate (29Si-TEOS), the silica precursor was prepared in two steps starting from elementary silicon-29 pellets. In the first step Si-29 silicon tetrachloride (29SiCl4) was prepared by heating elementary silicon-29 in chlorine gas stream. By using a multistep cooling system and the dilution of the volatile and moisture-sensitive 29SiCl4 in carbon tetrachloride as inert medium we managed to reduce product loss caused by evaporation. 29Si-TEOS was obtained by treating 29SiCl4 with absolute ethanol. Structural characterisation of 29Si-TEOS was performed by using 1H and 13C nuclear magnetic resonance (NMR) spectroscopy and Fourier-transform infrared (FTIR) spectroscopy. For the NP preparation, a basic amino acid catalysis route was used and the resulting NPs were analysed using transmission electron microscopy (TEM), small angle X-ray scattering (SAXS), dynamic light scattering (DLS) and zeta potential measurements. Finally, the feasibility of using enriched NPs for on-line field-flow fractionation coupled with multi-angle light scattering and inductively coupled plasma mass spectrometry (FFF/MALS/ICP-MS) has been demonstrated. |
Zitierung
Pálmai, M., Szalay, R., Bartczak, D., Varga, Z., Nagy, L. N., Gollwitzer, C., Krumrey, M., & Goenaga-Infante, H. (2015). Total synthesis of isotopically enriched Si-29 silica NPs as potential spikes for isotope dilution quantification of natural silica NPs. Journal of Colloid and Interface Science, 445, 161–165. https://doi.org/10.1016/j.jcis.2014.12.085