Characterization and Polydispersity of Volcanic Ash Nanoparticles in Synthetic Lung Fluid
The inhalation of natural nanoparticles (NPs) emitted from volcanic activity may be a risk to human health. However, the literature rarely reports the fate and response of NPs once in contact with lung fluids. In this work, we studied the particle size distribution of ashfall from Popocatépetl volca...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Toxics |
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| Online Access: | https://www.mdpi.com/2305-6304/11/7/624 |
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| author | Benedetto Schiavo Ofelia Morton-Bermea Diana Meza-Figueroa Mónica Acosta-Elías Belem González-Grijalva Maria Aurora Armienta-Hernández Claudio Inguaggiato Daisy Valera-Fernández |
| author_facet | Benedetto Schiavo Ofelia Morton-Bermea Diana Meza-Figueroa Mónica Acosta-Elías Belem González-Grijalva Maria Aurora Armienta-Hernández Claudio Inguaggiato Daisy Valera-Fernández |
| author_sort | Benedetto Schiavo |
| collection | DOAJ |
| description | The inhalation of natural nanoparticles (NPs) emitted from volcanic activity may be a risk to human health. However, the literature rarely reports the fate and response of NPs once in contact with lung fluids. In this work, we studied the particle size distribution of ashfall from Popocatépetl volcano, Mexico. The collected ashes (n = 5) were analyzed with scanning electron microscopy (SEM) to obtain the elemental composition and morphology, and to determine the size of the ash particles using ParticleMetric software (PMS). The PMS reported most of the ash to have submicrometric size (<1 μm) and an average equivalent circle of 2.72 μm. Moreover, to our knowledge, this study investigated for the first time the behavior of ash NPs at different times (0 to 24 h) while in contact with in vitro lung fluid, Gamble Solution (GS) and Artificial Lysosomal Fluid (ALF) using dynamic light scattering (DLS). We found a large variability in the hydrodynamic diameter, with values less than 1 nm and greater than 5 μm. Furthermore, aggregation and disaggregation processes were recognized in GS and ALF, respectively. The results of this study increase the knowledge of the interaction between NPs and lung fluids, particularly within the alveolar macrophage region. |
| first_indexed | 2024-03-11T00:35:43Z |
| format | Article |
| id | doaj.art-f0cd97667b1d4b14bc51533092818521 |
| institution | Directory Open Access Journal |
| issn | 2305-6304 |
| language | English |
| last_indexed | 2024-03-11T00:35:43Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Toxics |
| spelling | doaj.art-f0cd97667b1d4b14bc515330928185212023-11-18T21:37:29ZengMDPI AGToxics2305-63042023-07-0111762410.3390/toxics11070624Characterization and Polydispersity of Volcanic Ash Nanoparticles in Synthetic Lung FluidBenedetto Schiavo0Ofelia Morton-Bermea1Diana Meza-Figueroa2Mónica Acosta-Elías3Belem González-Grijalva4Maria Aurora Armienta-Hernández5Claudio Inguaggiato6Daisy Valera-Fernández7Instituto de Geofísica, Universidad Nacional Autónoma de México, Mexico City 04510, MexicoInstituto de Geofísica, Universidad Nacional Autónoma de México, Mexico City 04510, MexicoDepartamento de Geología, Universidad de Sonora, Hermosillo 83000, MexicoDepartamento de Investigación en Física, Universidad de Sonora, Hermosillo 83000, MexicoDepartamento de Geología, Universidad de Sonora, Hermosillo 83000, MexicoInstituto de Geofísica, Universidad Nacional Autónoma de México, Mexico City 04510, MexicoDepartamento de Geología, Centro de Investigación Científica y de Educación Superior de Ensenada, Baja California (CICESE), Ensenada 22860, MexicoInstituto de Geofísica, Universidad Nacional Autónoma de México, Mexico City 04510, MexicoThe inhalation of natural nanoparticles (NPs) emitted from volcanic activity may be a risk to human health. However, the literature rarely reports the fate and response of NPs once in contact with lung fluids. In this work, we studied the particle size distribution of ashfall from Popocatépetl volcano, Mexico. The collected ashes (n = 5) were analyzed with scanning electron microscopy (SEM) to obtain the elemental composition and morphology, and to determine the size of the ash particles using ParticleMetric software (PMS). The PMS reported most of the ash to have submicrometric size (<1 μm) and an average equivalent circle of 2.72 μm. Moreover, to our knowledge, this study investigated for the first time the behavior of ash NPs at different times (0 to 24 h) while in contact with in vitro lung fluid, Gamble Solution (GS) and Artificial Lysosomal Fluid (ALF) using dynamic light scattering (DLS). We found a large variability in the hydrodynamic diameter, with values less than 1 nm and greater than 5 μm. Furthermore, aggregation and disaggregation processes were recognized in GS and ALF, respectively. The results of this study increase the knowledge of the interaction between NPs and lung fluids, particularly within the alveolar macrophage region.https://www.mdpi.com/2305-6304/11/7/624nanoparticlesvolcanic ashSEMDLSnatural hazardlung fluid |
| spellingShingle | Benedetto Schiavo Ofelia Morton-Bermea Diana Meza-Figueroa Mónica Acosta-Elías Belem González-Grijalva Maria Aurora Armienta-Hernández Claudio Inguaggiato Daisy Valera-Fernández Characterization and Polydispersity of Volcanic Ash Nanoparticles in Synthetic Lung Fluid Toxics nanoparticles volcanic ash SEM DLS natural hazard lung fluid |
| title | Characterization and Polydispersity of Volcanic Ash Nanoparticles in Synthetic Lung Fluid |
| title_full | Characterization and Polydispersity of Volcanic Ash Nanoparticles in Synthetic Lung Fluid |
| title_fullStr | Characterization and Polydispersity of Volcanic Ash Nanoparticles in Synthetic Lung Fluid |
| title_full_unstemmed | Characterization and Polydispersity of Volcanic Ash Nanoparticles in Synthetic Lung Fluid |
| title_short | Characterization and Polydispersity of Volcanic Ash Nanoparticles in Synthetic Lung Fluid |
| title_sort | characterization and polydispersity of volcanic ash nanoparticles in synthetic lung fluid |
| topic | nanoparticles volcanic ash SEM DLS natural hazard lung fluid |
| url | https://www.mdpi.com/2305-6304/11/7/624 |
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