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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Di Gioacchino, Mario
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (3/3 displayed)
- 2022Fast and non-destructive neutron activation analysis for simultaneous determination of TiO<sub>2</sub> and SiO<sub>2</sub> in sunscreens with attention to regulatory and research issues.citations
- 2022Fast and non-destructive neutron activation analysis for simultaneous determination of TiO2 and SiO2 in sunscreens with attention to regulatory and research issuescitations
- 2018Radioanalytical and nuclear techniques in trace metal toxicology researchcitations
Places of action
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article
Fast and non-destructive neutron activation analysis for simultaneous determination of TiO<sub>2</sub> and SiO<sub>2</sub> in sunscreens with attention to regulatory and research issues.
Abstract
A new instrumental neutron activation analysis (INAA) for the simultaneous determination of titanium (TiO<sub>2</sub>) and silica (SiO<sub>2</sub>) dioxide as UV-filters in sunscreens is described. Samples are encapsulated, neutron irradiated (30 s) and after a suitable decay (3 min), the induced <sup>51</sup>Ti (T<sub>1/2</sub> = 5.76 min) and <sup>29</sup>Al (T<sub>1/2</sub> = 6.56 min) radionuclides are measured for the emitted γ-ray fingerprint. Three applications were carried out: (i) screening study (analysis of commercial sunscreens in combination with single particle inductively coupled plasma mass spectrometry (sp-ICP-MS); (ii) research study (development of innovative UV-filters such as titanium dioxide or bismuth titanate loaded inorganic mesoporous silica nanoparticles, MSN); (iii) validation study (intercalibration of a spectrochemical method - inductively coupled plasma optical emission spectrometry, ICP-OES). Collectively, the nuclear method appears a powerful tool adequate for quantifying TiO<sub>2</sub> and SiO<sub>2</sub> in the above studies. The limited accessibility at the nuclear reactor for neutron activation is probably one of the reasons why the excellent characteristics of the nuclear technique are not always fully known and exploited in the industrial and research chemical world.