Conference
Chemical and Mössbauer Spectroscopy Characterization associated to Oxidative Potential of particulate matter from Brake Wear Emissions
| العنوان: | Chemical and Mössbauer Spectroscopy Characterization associated to Oxidative Potential of particulate matter from Brake Wear Emissions |
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| المؤلفون: | Chevalier, Laurence, Jouen, Samuel, Brault, Martin, Monteil, Christelle, Rogez-Florent, Tiphaine, Corbière, Cécile, Préterre, David, Pareige, Philippe |
| المساهمون: | Groupe de physique des matériaux (GPM), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Aliments Bioprocédés Toxicologie Environnements (ABTE), Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Centre d'Etude et de Recherche Technologique en Aérothermique et Moteurs Saint Etienne du Rouvray (CERTAM) |
| المصدر: | CNANO2020 ; https://normandie-univ.hal.science/hal-03635421 ; CNANO2020, Dec 2020, TOULOUSE, France |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2020 |
| المجموعة: | Normandie Université: HAL |
| مصطلحات موضوعية: | (Brake, Particles, Toxicity, Characterization), [SDV]Life Sciences [q-bio] |
| جغرافية الموضوع: | TOULOUSE, France |
| الوصف: | International audience ; The road transport is recognized to be an important contributor to the air pollution. Brake wear may contribute up 55% in mass of PM10 of total emission of non-exhaust particles. The presence of high content of heavy metal and their oxides (Kukutschova et al 2011) in brake dusts combined to a nanosized fraction predict of their cytotoxic effects and oxidative stresses (Gasser et al 2009). We report chemical characterization of brake wear using TEM/STEM-EDX single particle analysis, to identify chemical element size and morphology of particles, known to be key determinant in tissue interaction or cellular uptake (Buzea et al 2007). Particles were generated from a home-made bench test designed specifically to reproduce real-world driving conditions. Source of many health adverse effects, oxidative stress was assessed by measuring the oxidative intrinsic potential of particles using acellular depletion DTT, Ascorbic Acid and GSH assays. Findings show a significant ultrafine fraction <100nm. Embedding in a carbonaceous matrix, Fe, Cu are the both major metal elements present in more than 94% of ultrafine fraction. Additionnal elements Mg, S, Ca, Cr, Zn, Ti, Al and Ba are clustered within particles, reflecting a probable remodeling of primary chemical components. An original approach by Spectroscopy Mossbauer defineIron-particles-content phases as mainly Fe0 (69%), and in lower proportion as Fe2+ (14%) and Fe3+ (17%). Compared to Diesel particles, brake wear exhibit high elevated oxidative potential starting with 14μg/ml of particles. Results provided pertinent information which can be used to study health effects via in vivo rodent exposure |
| نوع الوثيقة: | conference object still image |
| اللغة: | English |
| Relation: | hal-03635421; https://normandie-univ.hal.science/hal-03635421 |
| الاتاحة: | https://normandie-univ.hal.science/hal-03635421 |
| رقم الانضمام: | edsbas.A6D653B1 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |