| Sediments as monitors of heavy metal contamination in the Ave river basin (Portugal): multivariate analysis of data H Soares, RAR Boaventura, A Machado, JCGE Da Silva Environmental pollution 105 (3), 311-323, 1999 | 492 | 1999 |
| An electronic tongue taste evaluation: Identification of goat milk adulteration with bovine milk LA Dias, AM Peres, ACA Veloso, FS Reis, M Vilas-Boas, AASC Machado Sensors and Actuators B: Chemical 136 (1), 209-217, 2009 | 272 | 2009 |
| Flow-through tubular PVC matrix membrane electrode without inner reference solution for flow injection analysis S Alegret, J Alonso, J Bartroli, JM Paulis, J Lima, A Machado Analytica chimica acta 164, 147-152, 1984 | 141 | 1984 |
| Urea potentiometric biosensor based on urease immobilized on chitosan membranes JMCS Magalhães, AASC Machado Talanta 47 (1), 183-191, 1998 | 131 | 1998 |
| Construction of equipment for potentiometric determinations in flow injection analysis S Alegret, J Alonso, J Bartroli, J Lima, A Machado, JM Paulis Quím. Anal.(Barc.) 3 (6), 278-292, 1987 | 126 | 1987 |
| Fluorescence quenching of anthropogenic fulvic acids by Cu (II), Fe (III) and UO22+ JCGE da Silva, AASC Machado, CJS Oliveira, MS Pinto Talanta 45 (6), 1155-1165, 1998 | 117 | 1998 |
| “Green Star”: a holistic Green Chemistry metric for evaluation of teaching laboratory experiments MGTC Ribeiro, DA Costa, AASC Machado Green Chemistry Letters and Reviews 3 (2), 149-159, 2010 | 114 | 2010 |
| Fluorescence quenching of anthropogenic fulvic acids by Cu (II), Fe (III) and UO (2)(2+). JC Esteves da Silva, AA Machado, CJ Oliveira, MS Pinto Talanta 45 (6), 1155-1165, 1998 | 98 | 1998 |
| An electronic tongue for honey classification LA Dias, AM Peres, M Vilas-Boas, MA Rocha, L Estevinho, ... Microchimica Acta 163, 97-102, 2008 | 95 | 2008 |
| Single-cultivar extra virgin olive oil classification using a potentiometric electronic tongue LG Dias, A Fernandes, ACA Veloso, AASC Machado, JA Pereira, ... Food Chemistry 160, 321-329, 2014 | 91 | 2014 |
| Seasonal variations of heavy metals in sediments and aquatic mosses from the Cávado river basin (Portugal) EPR Gonçalves, HMVM Soares, RAR Boaventura, AASC Machado, ... Science of the Total Environment 142 (3), 143-156, 1994 | 90 | 1994 |
| Array of potentiometric sensors for the analysis of creatinine in urine samples JMCS Magalhães, AASC Machado Analyst 127 (8), 1069-1075, 2002 | 86 | 2002 |
| Procedure for the construction of all-solid-state PVC membrane electrodes JLFC Lima, AASC Machado Analyst 111 (7), 799-802, 1986 | 85 | 1986 |
| Da génese ao ensino da química verde AASC Machado Química Nova 34, 535-543, 2011 | 69 | 2011 |
| Flow-through sandwich PVC matrix membrane electrode for flow injection analysis S Alegret, J Alonso, J Bartroli, J Lima, A Machado, JM Paulis Analytical Letters 18 (18), 2291-2303, 1985 | 68 | 1985 |
| Semi-quantitative and quantitative analysis of soft drinks using an electronic tongue LG Dias, AM Peres, TP Barcelos, JS Morais, AASC Machado Sensors and Actuators B: Chemical 154 (2), 111-118, 2011 | 67 | 2011 |
| Characterisation of poly (vinyl chloride) barium ion-selective electrodes without an internal reference solution GJ Moody, JDR Thomas, J Lima, A Machado Analyst 113 (7), 1023-1027, 1988 | 60 | 1988 |
| Sequential flow-injection determinations of calcium and magnesium in waters J Alonso, J Bartroli, J Lima, A Machado Analytica Chimica Acta 179, 503-508, 1986 | 59 | 1986 |
| Evolving factor analysis of synchronous fluorescence spectra of humic substances in the presence of Cu (II) JCGE da Silva, AASC Machado Chemometrics and intelligent laboratory systems 27 (1), 115-128, 1995 | 57 | 1995 |
| Evolving factor analysis of synchronous fluorescence spectra of fulvic acids in the presence of aluminum CS Silva, JCGE Da Silva, AASC Machado Applied spectroscopy 48 (3), 363-372, 1994 | 55 | 1994 |
