Publicação
Cost-efective lab-on-a-chip device for seawater pH quantification by optical methods
| Resumo: | This paper presents a novel lab-on-a-chip (LOC) device for seawater pH quantification based on spectrophotometric methods. The device integrates optical, electronics and microfluidic systems, providing an autonomous, compact and portable platform for in-situ, long-term and low-cost seawater pH measurements. The developed system was validated in laboratory with measurement of various seawater samples, of different pH, within the seawater pH interval (7.50-8.30). The response of the LOC shows a high reproducibility and stability with a resolution of 0.01 pH units. Thus, the device has a high potential to be use in moored oceanic applications. |
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| Autores principais: | Pinto, Vânia Cristina Gonçalves |
| Outros Autores: | Sousa, Paulo Jorge Teixeira; Magalhaes, Vitor H.; Araújo, Catarina; Minas, Graça; Gonçalves, L. M. |
| Assunto: | meta-Cresol Purple Microfluidic pH sensor seawater spectrophotometry |
| Ano: | 2019 |
| País: | Portugal |
| Tipo de documento: | comunicação em conferência |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | This paper presents a novel lab-on-a-chip (LOC) device for seawater pH quantification based on spectrophotometric methods. The device integrates optical, electronics and microfluidic systems, providing an autonomous, compact and portable platform for in-situ, long-term and low-cost seawater pH measurements. The developed system was validated in laboratory with measurement of various seawater samples, of different pH, within the seawater pH interval (7.50-8.30). The response of the LOC shows a high reproducibility and stability with a resolution of 0.01 pH units. Thus, the device has a high potential to be use in moored oceanic applications. |
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