Data/hora: 03/06/2024 15:51:33

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 04/06/2013
Data da última atualização: | 15/05/2023
Autoria: | SUAREZ, W. T.; PESSOA NETO, O. D.; SANTOS, V. B. dos; NOGUEIRA, A. R. de A.; FARIA, R. C.; FATIBELLO-FILHO, O.; CHAMARRO, J. A.
Afiliação: | WILLIAN T. SUAREZ, Universidade Federal de Viçosa; OSMUNDO D. PESSOA-NETO, Universidade Federal de São Carlos; VAGNER B. DOS SANTOS, Universidade Federal de São Carlos; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; RONALDO C. FARIA, Universidade Federal de São Carlos; ORLANDO FATIBELLO-FILHO, Universidade Federal de São Carlos; JULIÁN A. CHAMARRO, Universitat Autònoma de Barcelona.
Título: | A compact miniaturized flow system based on low-temperature co-fired ceramic technology coupled to led mini-photometer for determination of dipyrone in pharmaceutical formulations.
Ano de publicação: | 2013
Fonte/Imprenta: | Journal Brazilian Chemical Society, v. 24, n. 5, p. 847-855, may 2013.
DOI: | https://doi.org/10.5935/0103-5053.20130112
Idioma: | Inglês
Conteúdo: | In this work, an analytical microsystem based on LTCC (low-temperature co-fired ceramic) technology with monolithic incorporation of an optical flow cell for determination of dipyrone in pharmaceuticals is described. The detection system is based on the formation of a blue chromophore between dipyrone and Fe(III) photometrically monitored at 630 nm using a lab-made LED mini-photometer constructed with a light emitting diode as a radiation source and a Si photodiode as a detector. The lab-made mini-photometer elaborated presented a good performance in regard to high signal/noise ratio, low drift and good sensitivity. The analytical curve was linear in the dipyrone concentration range from 1.0 × 10-4 to 3.5 × 10-3 mol L-1, limit of detection of 4.5 × 10-5 mol L-1 and total time of analyses of 20 s yielding an analytical frequency of 195 h-1 with a low waste generation per analysis (480 µL).
Palavras-Chave: | Analytical microsystems; Co-fired ceramic; Dipyrone; Flow injection; LED photometer; Low temperature.
Categoria do assunto: | W Química e Física
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/95364/1/PROCI-2013.00023.pdf
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (21856-1) - UPC - AP - DD - PROCI-2013.00023 - SUA - 2013.00023 - DIS