| Texto completo | |
| Autor(es): |
Ferreira, Andre L.
;
Paschoarelli, Mayra V.
;
de Araujo, William R.
;
de Lima, Lucas F.
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ANALYTICAL METHODS; v. 17, n. 13, p. 11-pg., 2025-03-13. |
| Resumo | |
The development of new tools for detecting and monitoring emerging pollutants is highly desired in the environmental field. Here, we report a hybrid multiplexed sensor for colorimetric detection of nitrite (NO2-) and pH, along with simultaneous electrochemical detection of methylparaben (MP) and bisphenol A (BPA) in tap, lake and natural water. Through a portable potentiostat and a smartphone, our device provides relevant environmental parameters within two minutes. The colorimetric sensors were fabricated through spot tests, detecting NO2- at a concentration ranging from 1 to 200 mu mol L-1, with a limit of detection (LOD) of 3.0 mu mol L-1. The electrochemical sensors for MP and BPA were fabricated using the laser-scribed graphene (LSG) technique on a polyamide (PI) substrate. We achieved LODs of 0.22 mu mol L-1 (MP) and 0.057 mu mol L-1 (BPA), ranging from 1 to 100 mu mol L-1 for both, and reproducibility with relative standard deviations (RSDs) of 2.5% (MP) and 4.8% (BPA). As a proof-of-concept, our device was tested using real samples of lake, tap and natural water, achieving recoveries from 93% to 120%, demonstrating its suitability for in-field applications for environmental analyses. (AU) | |
| Processo FAPESP: | 22/03250-7 - Desenvolvimento de biossensores portáteis e acessíveis para diagnósticos clínicos de infecções bacterianas e virais |
| Beneficiário: | William Reis de Araujo |
| Modalidade de apoio: | Auxílio à Pesquisa - Projeto Inicial |
| Processo FAPESP: | 23/12589-0 - Fabricação de um arranjo de (bio)sensores eletroquímicos por gravação a laser de CO2 visando o desenvolvimento de dispositivo wearable |
| Beneficiário: | Lucas Felipe de Lima |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 23/00246-1 - Dispositivos miniaturizados visando à produção em larga escala: fabricação, caracterização e aplicações in-situ |
| Beneficiário: | Mauro Bertotti |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |