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Seiffert SB, Elinkmann M, Niehaves E, Vennemann A, Mozhayeva D, Kröger S, Wiemann M, Karst U. Calibration Strategy to Size and Localize Multi-Shaped Nanoparticles in Tissue Sections Using LA-spICP-MS. Anal Chem 2023; 95:6383-6390. [PMID: 37023260 DOI: 10.1021/acs.analchem.3c00022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
In the field of nanotoxicology, the detection and size characterization of nanoparticles (NPs) in biological tissues become increasingly important. To gain information on both particle size and particle distribution in histological sections, laser ablation and single particle inductively coupled plasma-mass spectrometry (LA-spICP-MS) was used in combination with a liquid calibration of dissolved metal standards via a pneumatic nebulizer. In the first step, the particle size distribution of Ag NPs embedded in matrix-matched gelatine standards introduced via LA was compared with that of Ag NPs in a suspension and nebulizer-based ICP-MS. The data show that the particles remained intact by the ablation process as confirmed by transmission electron microscopy. Moreover, the optimized method was applied to CeO2 NPs that are highly relevant for (eco-)toxicological research but, unlike Ag NPs, are multi-shaped and have a broad particle size distribution. Upon analyzing the particle size distribution of CeO2 NPs in cryosections of rat spleen, CeO2 NPs were found to remain unchanged in size over 3 h, 3 d, and 3 weeks post-intratracheal instillation, with the fraction of smaller particles reaching the spleen first. Overall, LA-spICP-MS combined with a calibration based on dissolved metal standards is a powerful tool to simultaneously localize and size NPs in histological sections in the absence of particle standards.
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Affiliation(s)
- Svenja B Seiffert
- Material Science, BASF SE, Ludwigshafen am Rhein, 67056 Ludwigshafen, Germany
- Institute of Inorganic and Analytical Chemistry, University of Münster, 48149 Münster, Germany
| | - Matthias Elinkmann
- Institute of Inorganic and Analytical Chemistry, University of Münster, 48149 Münster, Germany
| | - Erik Niehaves
- Material Science, BASF SE, Ludwigshafen am Rhein, 67056 Ludwigshafen, Germany
- Institute of Inorganic and Analytical Chemistry, University of Münster, 48149 Münster, Germany
| | - Antje Vennemann
- IBE R&D Institute for Lung Health gGmbH, 48149 Münster, Germany
| | - Darya Mozhayeva
- Material Science, BASF SE, Ludwigshafen am Rhein, 67056 Ludwigshafen, Germany
| | - Sabrina Kröger
- Material Science, BASF SE, Ludwigshafen am Rhein, 67056 Ludwigshafen, Germany
| | - Martin Wiemann
- IBE R&D Institute for Lung Health gGmbH, 48149 Münster, Germany
| | - Uwe Karst
- Institute of Inorganic and Analytical Chemistry, University of Münster, 48149 Münster, Germany
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Prysiazhnyi V, Bednařík A, Žalud M, Hegrová V, Neuman J, Preisler J. Fate of Gold Nanoparticles in Laser Desorption/Ionization Mass Spectrometry: Toward the Imaging of Individual Nanoparticles. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2023; 34:570-578. [PMID: 36917818 PMCID: PMC10080673 DOI: 10.1021/jasms.2c00300] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 02/13/2023] [Accepted: 03/02/2023] [Indexed: 06/14/2023]
Abstract
This study focuses on mapping the spatial distribution of Au nanoparticles (NPs) by laser desorption/ionization mass spectrometry imaging (LDI MSI). Laser interaction with NPs and associated phenomena, such as change of shape, melting, migration, and release of Au ions, are explored at the single particle level. Arrays of dried droplets containing low numbers of spatially segregated NPs were reproducibly prepared by automated drop-on-demand piezo-dispensing and analyzed by LDI MSI using an ultrahigh resolution orbital trapping instrument. To enhance the signal from NPs, an in source gas-phase chemical reaction of generated Au ions with xylene was employed. The developed technique allowed the detecting, chemical characterization, and mapping of the spatial distribution of Au NPs; the ion signals were detected from as low as ten 50 nm Au NPs on a pixel. Furthermore, the Au NP melting dynamics under laser irradiation was monitored by correlative atomic force microscopy (AFM) and scanning electron microscopy (SEM). AFM measurements of Au NPs before and after LDI MSI analysis revealed changes in NP shape from a sphere to a half-ellipsoid and total volume reduction of NPs down to 45% of their initial volume.
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Affiliation(s)
- Vadym Prysiazhnyi
- Department
of Chemistry, Faculty of Science, Masaryk
University, 625 00, Brno, Czech
Republic
| | - Antonín Bednařík
- Department
of Chemistry, Faculty of Science, Masaryk
University, 625 00, Brno, Czech
Republic
| | - Michal Žalud
- Department
of Chemistry, Faculty of Science, Masaryk
University, 625 00, Brno, Czech
Republic
| | | | - Jan Neuman
- Nenovision
s. r. o., 612 00, Brno, Czech Republic
| | - Jan Preisler
- Department
of Chemistry, Faculty of Science, Masaryk
University, 625 00, Brno, Czech
Republic
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