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Improved sample preparation for GC-MS-SIM analysis of ethyl carbamate in wine. Author(s): NÓBREGA, I. C. C.; PEREIRA, G. E.; SILVA, M.; PEREIRA, E. V. S.; MEDEIROS, M. M.; TELLES, D. L.; ALBUQUERQUE JUNIOR, E. C.; OLIVEIRA, J. B.; LACHENMEIER, D. W. An improved sample preparation procedure for analysis of carcinogenic ethyl carbamate (EC) in wine by GC?MS?SIM is proposed. Differences over AOAC reference procedure were: (1) use of EC-d5 as interna... ... Repository: BDPA Publication year: 2015
Determination of selenium in bovine semen by ICP-MS using formic acid for sample preparation. Author(s): BIANCHI, S. R.; AMARAL, C. D. B. do; SILVA, C. S. da; NOGUEIRA, A. R. de A. Determination of Se by inductively coupled plasma mass spectrometry (ICP-MS) can be difficult due to spectral interferences; however, these interferences can be eliminated by using collision-reaction... ... Repository: BDPA Publication year: 2017
Strategy of sample preparation for arsenic determination in mineral fertilizers. Author(s): MACHADO, R. C.; PEREIRA FILHO, E. R.; NOGUEIRA, A. R. de A. Repository: BDPA Publication year: 2016
Evaluation of different sample preparation procedures using chemometrics: comparison among photo-fenton reaction, microwave irradiation, and direct determination of minerals in fruit juices. Author(s): GROMBONI, C. F.; CARAPELLI, R.; FEREIRA FILHO, E. R.; NOGUEIRA, A. R. de A. In this work, an exploratory study about the mineral characteristic of some fruit juice (passion fruit, pineapple, orange, and grape) applying chemometric tools was made. The juices analyzed were sepa... ... Repository: BDPA Publication year: 2010
Multiresidue method for quantification of sulfonamides and trimethoprim in tilapia fillet by liquid chromatography coupled to quadrupole time-of-flight mass spectrometry using QuEChERS for sample preparation. Author(s): NUNES, K. S. D.; ASSALIN, M. R.; VALLIM, J. H.; JONSSON, C. M.; QUEIROZ, S. C. do N. de; REYES, F. G. R. Abstract: A multiresidue method for detecting and quantifying sulfonamides (sulfapyridine, sulfamerazine, sulfathiazole, sulfamethazine, sulfadimethoxine, sulfamethoxazole, and sulfamethoxypyridazine)... ... Repository: BDPA Publication year: 2018
MSPD sample preparation approach for reversed-phase liquid chromatographic analysis of pesticide residues in stem of coconut. Author(s): FERREIRA, J. A.; SANTOS, L. F. S.; SOUZA, N. R. da S.; OLIVEIRA, F. A. de; TALAMINI, V. Repository: BDPA Publication year: 2013
Solventes eutéticos naturais profundos (NADES) no preparo de amostras de rocha fosfática e suplemento mineral para determinação elementar por técnicas de plasma. Author(s): SANTANA, A. P. R.; ANDRADE, D. F.; GUIMARÃES, T. G. S.; AMARAL, C. D. B.; OLIVEIRA, A.; NOGUEIRA, A. R. de A.; GONZALEZ, M. H. NATURAL DEEP EUTECTIC SOLVENTS (NADES) IN SAMPLE PREPARATION OF PHOSPHATE ROCK AND MINERAL SUPPLEMENT FOR ELEMENTARY DETERMINATION BY PLASMA-BASED TECHNIQUES. Natural deep eutectic solvents (NADES) ba... ... Repository: BDPA Publication year: 2021
Microwave-assisted digestion procedures for biological samples with diluted nitric acid: identification of reaction products. Author(s): GONZALEZ, M. H.; SOUZA, G. B. D.; OLIVEIRA, R. V. DE; FORATO, L. A.; NÓBREGA, J. A.; NOGUEIRA, A. R. de A. Microwave-assisted sample preparation using diluted nitric acid solutions is an alternative procedure for digesting organic samples. The efficiency of this procedure depends on the chemical properties... ... Repository: BDPA Publication year: 2009
Bioaccessibility assessment of Cu, Fe, K, Mg, P, and Zn in thermally treated lamb meat. Author(s): MARCANO DE HIGUERA, J.; SANTOS, H. M.; OLIVEIRA, A. F. DE; NOGUEIRA, A. R. de A. A bioaccessibility test with raw and cooked lamb meat samples was performed. The evaluated cooking devices were grill, microwave oven, air fryer, pressure cooker, and electric oven. Physicochemical pa... ... Repository: BDPA Publication year: 2021
Investigation of reaction products resulted from biological materials after pressure digestion with diluted nitric acid. Author(s): NOGUEIRA, A. R. A.; GONZALEZ, M. H.; NÓBREGA, J. A.; FORATO, L.; OLIVEIRA, R. V. Repository: BDPA Publication year: 2007

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