| Texto completo | |
| Autor(es): |
Rani-Borges, Barbara
;
Rangel, Clara de Jesus
;
Ando, Romulo Augusto
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | NANOIMPACT; v. 39, p. 7-pg., 2025-07-25. |
| Resumo | |
Plastic particles, including nanoplastics, can serve as carriers for various contaminants such as pesticides, leading to considerable environmental hazards. Herein, we used Surface-Enhanced Raman Spectroscopy (SERS) to specifically detect pesticides adsorbed onto nanoplastic particles at environmentally relevant concentrations. By utilizing common silver and gold nanoparticles (AgNPs, 15 nm; AuNPs, 30 nm) as SERS substrates, we enhanced the Raman signals of Diquat adsorbed to polystyrene (PS) nanoplastics surface (nanoPS, 100 nm). Notably, the technique successfully detected both the polymer and pesticide simultaneously at concentrations as low as 20 mu g/ L for the polymer and 66 mu g/L for the pesticide-levels frequently found in environmental samples. The significant signal enhancement observed at these low concentrations highlights SERS as a powerful tool for monitoring pollutants attached to nanoplastic surfaces in environmental contexts. (AU) | |
| Processo FAPESP: | 22/11983-4 - Espectroscopias com intensificação de sinal: nanomateriais, teoria e simulação computacional |
| Beneficiário: | Mauro Carlos Costa Ribeiro |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 22/15586-0 - Monitoramento e caracterização de fotoenvelhecimento de microplásticos combinando abordagens de espectroscopia vibracional e evolução do potencial tóxico |
| Beneficiário: | Bárbara Rani Borges |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |