| Texto completo | |
| Autor(es): |
da Silva, Jocimara Camargo
;
Gomes, Wyllerson Evaristo
;
Etchegaray, Augusto
;
Mendes, Renata Kelly
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | URBAN WATER JOURNAL; v. 22, n. 4, p. 8-pg., 2025-03-10. |
| Resumo | |
Toxic cyanobacteria pose a serious threat to public health due to production of cyanotoxins, especially microcystin LR (MC-LR), which is released in water upon cell death. In humans, microcystin causes damage to the liver, affects the kidneys and is a risk to the gastrointestinal tract. In this work, MC-LR was detected using a biosensor based on alkaline phosphatase physically adsorbed on a carbon-printed electrode. The measurements were performed before and after the addition of MC-LR. The device gave linear response for a concentration range between 11 and 100 ng.L-1, in addition to high selectivity , with a limit of detection of 1.3 ng.L-1 and a limit of quantification of 4.5 ng.L-1. High accuracy was obtained, with a low relative error of 3.9% when used to quantify MC-LR in natural water. These results suggest a simple and low-cost alternative to determine if MC-LR is present in urban waters that undergo eutrophication due to high nutrient loads. (AU) | |
| Processo FAPESP: | 13/20570-6 - Produção sustentável de biossurfactantes com aplicações para medicina e remediação ambiental |
| Beneficiário: | Augusto Etchegaray Júnior |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |