Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Marcelo M. Sena"'
Publikováno v:
Química Nova, Vol 36, Iss 9, Pp 1416-1422 (2013)
This study developed and validated a method for moisture determination in artisanal Minas cheese, using near-infrared spectroscopy and partial-least-squares. The model robustness was assured by broad sample diversity, real conditions of routine analy
Externí odkaz:
https://doaj.org/article/e3a7251556ac431da09f7fdec1802917
Publikováno v:
Química Nova, Vol 35, Iss 1, Pp 175-179 (2012)
This work applied a 2² factorial design to the optimization of the extraction of seven elements (calcium, magnesium, potassium, iron, zinc, copper and manganese) in brachiaria leaves, determined by flame atomic absorption spectrometry. The factors s
Externí odkaz:
https://doaj.org/article/d661f62f826f445b84e7d44a21c24349
Publikováno v:
Química Nova, Vol 32, Iss 8, Pp 2214-2217 (2009)
A cleaning validation method was developed and validated, based on swabbing sampling and simultaneous chromatographic determination of sulfamethoxazole (SMX) and trimethoprim (TMP) residues. The method presented limits of detection of 0.06 mg mL-1 fo
Externí odkaz:
https://doaj.org/article/9c1260cbcdc74baa8192f5fcdfa6a6b6
Publikováno v:
Química Nova, Vol 30, Iss 1, Pp 75-79 (2007)
A simple method was proposed for determination of paracetamol and ibuprofen in tablets, based on UV measurements and partial least squares. The procedure was performed at pH 10.5, in the concentration ranges 3.00-15.00 µg ml-1 (paracetamol) and 2.40
Externí odkaz:
https://doaj.org/article/562de47d135041fe9e983d78edd5d5a1
Publikováno v:
Química Nova, Vol 28, Iss 5, Pp 910-920 (2005)
Externí odkaz:
https://doaj.org/article/c0ca69a43ed74ad7aa85b7cb4553785b
Publikováno v:
Química Nova, Vol 24, Iss 3, Pp 331-338 (2001)
Externí odkaz:
https://doaj.org/article/06dc4867e374453ea4ede110aac27ed0
Autor:
Núbia K. de Paula, Marcelo M. Sena
Publikováno v:
Química Nova, Vol 30, Iss 5, Pp 1359-1361 (2007)
The aim of this work was to develop and validate an analytical methodology for simultaneous determination of mebendazole and thiabendazole, two benzimidazoles used as anthelmintics. The method was based on high performance liquid chromatography, usin
Externí odkaz:
https://doaj.org/article/6678fe0825f54257a2077cf0ea26b268
Autor:
Diego P. dos Santos, Marcelo M. Sena, Mariana R. Almeida, Italo O. Mazali, Alejandro C. Olivieri, Javier E. L. Villa
Publikováno v:
Analytical and Bioanalytical Chemistry.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a156802dfc4ca371d9dc7daf7e42b053
https://doi.org/10.1007/s00216-023-04620-y
https://doi.org/10.1007/s00216-023-04620-y
Publikováno v:
Food Analytical Methods. 15:728-738
The development of rapid, reliable, and environmentally friendly analytical methods for food analysis is increasingly required. In this sense, the combination of spectrofluorimetry and second-order calibration is a promising alternative to the determ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::932996d8c4c516ddada1175eebdb5e4f
https://doi.org/10.1007/s12161-021-02152-8
https://doi.org/10.1007/s12161-021-02152-8
Autor:
Glaucimar Alex Passos De Resende, Bruno G. Botelho, Marcelo M. Sena, Marden Claret Fontoura Teixeira, Ana Carolina da Costa Fulgêncio
Publikováno v:
Food Analytical Methods. 15:307-316
The determination of alcohol content in beers is essential for the quality control of this beverage. This paper proposed and validated a new rapid and direct multivariate method for this aim using a portable near-infrared (NIR) spectrometer and parti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a13b9c37ba258c707bdafac4f0ea1a3
https://doi.org/10.1007/s12161-021-02126-w
https://doi.org/10.1007/s12161-021-02126-w