Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Alessandra L. M. C. da Cunha"'
Autor:
Juliana M. Carvalho, Andrea R. da Silva, Alessandra L. M. C. da Cunha, Ricardo Q. Aucélio, André Luis M. Alberti, Katia C. Leandro
Publikováno v:
Química Nova, Vol 35, Iss 5, Pp 988-992 (2012)
A simple and sensitive method has been proposed for the determination of sibutramine-HCl in energy drinks, green tea and pharmaceutical formulations using differential pulse voltammetry performed on a hanging mercury drop electrode. In the chosen exp
Externí odkaz:
https://doaj.org/article/d9dd2923b75748bc8eac55d302dc0b70
Publikováno v:
Química Nova, Vol 33, Iss 6, Pp 1301-1306 (2010)
Room-temperature phosphorimetry was used to quantify trace levels of chrysene in sugar-cane spirits and in fish bile. A selective phosphorescence enhancer (AgNO3) and synchronous scanning allowed the detection of ng amounts of chrysene. Accuracy (113
Externí odkaz:
https://doaj.org/article/579bbe88eacb4356979df8b7ca093831
Autor:
Rosana C. Macedo, Ricardo Q. Aucélio, Carlos A.T. Toloza, Alessandra L. M. C. da Cunha, Ana Paula Lamounier, Lillian O. P. Silva, Joseany M.S. Almeida
Publikováno v:
Analytical Letters. 53:2202-2221
A high-performance chromatographic method was developed to determine the fungicide kresoxim-methyl. Off-line photochemical derivatization was used to induce the formation of a stable and fluorescen...
Autor:
Ricardo Q. Aucélio, Sarzamin Khan, Carlos A.T. Toloza, Alessandra L. M. C. da Cunha, Ana C. P. Osorio, Joseany M.S. Almeida
Publikováno v:
Microchemical Journal. 144:172-179
Photochemical derivatization (at 253 nm) of varenicline in alkaline medium (in NaOH 0.64 mol L−1) was successfully achieved aiming to induce strong fluorescence for quantitative purposes. The intense fluorescence from the produced photo-derivative
Autor:
Tácio Mauro Pereira de Campos, Denise Mano, Maize M. Campos, Alessandra L. M. C. da Cunha, Tomaz Langenbach
Publikováno v:
Journal of Environmental Science and Health, Part B. 52:843-849
Pesticide air pollution by spraying was evaluated under different temperature, humidity and wind climatic conditions in Brazil. Field experiments were performed with application towards the soil and in guava orchards, where spray dispersion was monit
Autor:
Daphne S. Cukierman, Anastácia Sá P. da Silva, Ricardo Q. Aucélio, Sergio L.P. Castiñeiras-Filho, Thales de P. Ribeiro, Marco C. Miotto, Rachel Ann Hauser-Davis, Nicolás A. Rey, Alessandra L. M. C. da Cunha, Tiago F. Outeiro, Anna De Falco, Marcos D. Pereira, Jesus Landeira-Fernandez, Ana Beatriz Pinheiro, Claudio O. Fernández, Silvia Maisonette
Publikováno v:
Journal of Inorganic Biochemistry. 170:160-168
Alzheimer's and Parkinson's diseases share similar amyloidogenic mechanisms, in which metal ions might play an important role. In this last neuropathy, misfolding and aggregation of α-synuclein (α-Syn) are crucial pathological events. A moderate me
Publikováno v:
Brazilian Journal of Analytical Chemistry. 6
Autor:
Ricardo Q. Aucélio, Selma Cunha Mello, Yaneth E. Vásquez-Castro, Alessandra L. M. C. da Cunha, Aderval S. Luna, Anastácia Sá
Publikováno v:
Fuel. 176:119-129
Carbazoles, quinolines, indoles, pyrroles, anilines and acridines are nitrogen-containing polycyclic aromatic compounds (NPAC) that contribute to deteriorate fuels affecting storage stability, causing problems to motor engines and poisoning automotiv
Autor:
Ricardo Q. Aucélio, Hellen S. Santos, Alessandra L. M. C. da Cunha, Andrea R. da Silva, Eric C. Romani, Gabriela M. de França, Dunieskys G. Larrude
Publikováno v:
Microchemical Journal. 116:206-215
Tobramycin (TBR) is an antibiotic of the aminoglycoside class used for the treatment of bacterial infections. A careful study was made aiming to find conditions for the determination of TBR in the presence of streptomycin (STP) as well as in the pres
Autor:
Andrea R. da Silva, Renata K.S. Martins, Alessandra L. M. C. da Cunha, Ricardo Q. Aucélio, Cabrini F. de Souza
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 100:51-58
A phosphorimetric method was developed to enable the determination of enrofloxacin using photochemical derivatization which was used to both improve detection limits and to minimize the uncertainty of measurements. Phosphorescence was induced on cell