Box-Behnken design: An alternative for the optimization of analytical methods SLC Ferreira, RE Bruns, HS Ferreira, GD Matos, JM David, GC Brandão, ... Analytica chimica acta 597 (2), 179-186, 2007 | 3815 | 2007 |
Accelerated solvent extraction of phenolic compounds exploiting a Box-Behnken design and quantification of five flavonoids by HPLC-DAD in Passiflora species SVF Gomes, LA Portugal, JP dos Anjos, ON de Jesus, EJ de Oliveira, ... Microchemical Journal 132, 28-35, 2017 | 177 | 2017 |
Simultaneous pre-concentration procedure for the determination of cadmium and lead in drinking water employing sequential multi-element flame atomic absorption spectrometry LA Portugal, HS Ferreira, WNL dos Santos, SLC Ferreira Microchemical Journal 87 (1), 77-80, 2007 | 109 | 2007 |
Pre-concentration procedure for determination of copper and zinc in food samples by sequential multi-element flame atomic absorption spectrometry HS Ferreira, ACN Santos, LA Portugal, ACS Costa, M Miró, SLC Ferreira Talanta 77 (1), 73-76, 2008 | 94 | 2008 |
Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry DG da Silva, LA Portugal, AM Serra, SLC Ferreira, V Cerdà Food Chemistry 137 (1-4), 159-163, 2013 | 84 | 2013 |
On-line lab-in-syringe cloud point extraction for the spectrophotometric determination of antimony RM Frizzarin, LA Portugal, JM Estela, FRP Rocha, V Cerda Talanta 148, 694-699, 2016 | 53 | 2016 |
An evaluation of the bioaccessibility of arsenic in corn and rice samples based on cloud point extraction and hydride generation coupled to atomic fluorescence spectrometry JMR Castor, L Portugal, L Ferrer, L Hinojosa-Reyes, JL Guzmán-Mar, ... Food Chemistry 204, 475-482, 2016 | 46 | 2016 |
Development of a MSFIA system for sequential determination of antimony, arsenic and selenium using hydride generation atomic fluorescence spectrometry FA de Santana, LA Portugal, AM Serra, L Ferrer, V Cerdà, SLC Ferreira Talanta 156, 29-33, 2016 | 45 | 2016 |
Determination of cadmium in rice by electrothermal atomic absorption spectrometry using aluminum as permanent modifier DG da Silva, MMS Junior, LOB Silva, LA Portugal, GD Matos, ... Analytical Methods 3 (11), 2495-2500, 2011 | 44 | 2011 |
Submicrometric magnetic nanoporous carbons derived from metal–organic frameworks enabling automated electromagnet-assisted online solid-phase extraction RM Frizzarin, C Palomino Cabello, MM Bauzà, LA Portugal, F Maya, ... Analytical Chemistry 88 (14), 6990-6995, 2016 | 41 | 2016 |
A portable multi-syringe flow system for spectrofluorimetric determination of iodide in seawater RM Frizzarin, E Aguado, LA Portugal, D Moreno, JM Estela, FRP Rocha, ... Talanta 144, 1155-1162, 2015 | 40 | 2015 |
A Multiple Response Function for Optimization of Analytical Strategies Involving Multi-elemental Determination LAPHCG Cleber G. Novaes, Sergio L.C. Ferreira, João H.S. Neto, Fernanda A ... Current Analytical Chemistry 12 (2), 94-101, 2016 | 39 | 2016 |
Use of multiresponse statistical techniques to optimize the separation of diosmin, hesperidin, diosmetin and hesperitin in different pharmaceutical preparations by high … MS Sammani, S Clavijo, L Portugal, R Suárez, H Seddik, V Cerdà Talanta 167, 695-702, 2017 | 36 | 2017 |
On line automated system for the determination of Sb (V), Sb (III), thrimethyl antimony (v) and total antimony in soil employing multisyringe flow injection analysis coupled to … MMS Junior, LA Portugal, AM Serra, L Ferrer, V Cerdà, SLC Ferreira Talanta 165, 502-507, 2017 | 35 | 2017 |
Parabens determination in cosmetic and personal care products exploiting a multi-syringe chromatographic (MSC) system and chemiluminescent detection M Rodas, LA Portugal, J Avivar, JM Estela, V Cerdà Talanta 143, 254-262, 2015 | 31 | 2015 |
Multisyringe flow injection analysis in spectroanalytical techniques–A review V Cerda, L Ferrer, LA Portugal, CT de Souza, SLC Ferreira TrAC Trends in Analytical Chemistry 98, 1-18, 2018 | 30 | 2018 |
A photo-oxidation procedure using UV radiation/H2O2 for decomposition of wine samples—Determination of iron and manganese content by flame atomic absorption spectrometry WNL dos Santos, GC Brandão, LA Portugal, JM David, SLC Ferreira Spectrochimica Acta Part B: Atomic Spectroscopy 64 (6), 601-604, 2009 | 30 | 2009 |
A non-chromatographic automated system for antimony speciation in natural water exploiting multisyringe flow injection analysis coupled with online hydride generation–atomic … LA Portugal, L Ferrer, AM Serra, DG da Silva, SLC Ferreira, V Cerdà Journal of Analytical Atomic Spectrometry 30 (5), 1133-1141, 2015 | 29 | 2015 |
Arsenic fractionation in agricultural soil using an automated three-step sequential extraction method coupled to hydride generation-atomic fluorescence spectrometry JM Rosas-Castor, L Portugal, L Ferrer, JL Guzman-Mar, ... Analytica Chimica Acta 874, 1-10, 2015 | 28 | 2015 |
Pressure-driven mesofluidic platform integrating automated on-chip renewable micro-solid-phase extraction for ultrasensitive determination of waterborne inorganic mercury LA Portugal, LM Laglera, AN Anthemidis, SLC Ferreira, M Miró Talanta 110, 58-65, 2013 | 21 | 2013 |