Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/1986
Título: | Biological microsystem for measuring uric acid in biological fluids |
Autor(es): | Minas, Graça Martins, Júlio S. Ribeiro, J. C. Wolffenbuttel, R. F. Correia, J. H. |
Palavras-chave: | Bio-system Uric acid Optical absorption |
Data: | 2004 |
Editora: | Elsevier 1 |
Revista: | Sensors and Actuators A: Physical |
Citação: | "Sensors and Actuators A : Physical". ISSN 0924-4247. 110 (2004) 33-38. |
Resumo(s): | This paper describes a biological microsystem (bio-system) for measuring uric acid concentration in serum, plasma or urine. Its operation is based on optical absorption in a well-defined part of the visible spectrum. The bio-system is composed by two dies: one is fabricated in polystyrene and contains the microchannels and the other is fabricated in a CMOS standard process and contains the photodetector and readout electronics. The uric acid concentration is measured by using a mixture of 14µl of infinity™ uric acid reagent with 0.25µl of sample. The achieved sensitivity is 0.33 mg/dl (±0.6% of the value in urine of a healthy person), with a 1mm lightpath. Using an optical absorption method, a maximum peak at wavelength λ = 494 nm, is detected. This bio-system can be included in the group of low-cost disposable devices for biological fluids analysis. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/1986 |
DOI: | 10.1016/j.sna.2003.10.049 |
ISSN: | 0924-4247 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | DEI - Artigos em revistas internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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science.pdf | 235,63 kB | Adobe PDF | Ver/Abrir |