Centro de Investigação Em Química da Universidade do Porto (CIQUP)
AuthID: I-000-1AC
Publications Count: 2623
114 Team MembersFilters -> Year: 2026
2481
TITLE: Classification of binding sites for Al(III) in fulvic acids extracted from leaf litters and soils by synchronous fluorescence spectroscopy and multidimensional chemometric analysis
AUTHORS: daSilva, JCGE ; Ferreira, MA; Machado, AASC; Rey, F;
PUBLISHED: 1996, SOURCE: ANALYTICA CHIMICA ACTA, VOLUME: 333, ISSUE: 1-2, PAGES: 71-82
AUTHORS: daSilva, JCGE ; Ferreira, MA; Machado, AASC; Rey, F;
PUBLISHED: 1996, SOURCE: ANALYTICA CHIMICA ACTA, VOLUME: 333, ISSUE: 1-2, PAGES: 71-82
2482
TITLE: Electrochemical evidence of surfactant activity of the hepes pH buffer which may have implications on trace metal availability to cultures in vitro
AUTHORS: Vasconcelos, MTSD; Azenha, MAGO ; Lage, OM ;
PUBLISHED: 1996, SOURCE: ANALYTICAL BIOCHEMISTRY, VOLUME: 241, ISSUE: 2, PAGES: 248-253
AUTHORS: Vasconcelos, MTSD; Azenha, MAGO ; Lage, OM ;
PUBLISHED: 1996, SOURCE: ANALYTICAL BIOCHEMISTRY, VOLUME: 241, ISSUE: 2, PAGES: 248-253
2483
TITLE: Enthalpies of combustion of 5-methoxybenzofurazan, 5-methoxybenzofurazan-1-oxide, 5-methylbenzofurazan-1-oxide, 5-chlorobenzofurazan-1-oxide, and 4-nitro-benzofurazan-1-oxide: The dissociation enthalpies of the N-O bonds
AUTHORS: Acree, WE; Bott, SG; Tucker, SA; Maria D. M. C. Ribeiro da Silva ; Matos, MAR ; Pilcher, G;
PUBLISHED: 1996, SOURCE: JOURNAL OF CHEMICAL THERMODYNAMICS, VOLUME: 28, ISSUE: 6, PAGES: 673-683
AUTHORS: Acree, WE; Bott, SG; Tucker, SA; Maria D. M. C. Ribeiro da Silva ; Matos, MAR ; Pilcher, G;
PUBLISHED: 1996, SOURCE: JOURNAL OF CHEMICAL THERMODYNAMICS, VOLUME: 28, ISSUE: 6, PAGES: 673-683
2484
TITLE: FIA automatic dilution system for the determination of metallic cations in waters by atomic absorption and flame emission spectrometry
AUTHORS: Garrido, JMPJ ; Lapa, RAS ; Lima, JLFC ; DelerueMatos, C ; Santos, JLM ;
PUBLISHED: 1996, SOURCE: JOURNAL OF AUTOMATIC CHEMISTRY, VOLUME: 18, ISSUE: 1, PAGES: 17-21
AUTHORS: Garrido, JMPJ ; Lapa, RAS ; Lima, JLFC ; DelerueMatos, C ; Santos, JLM ;
PUBLISHED: 1996, SOURCE: JOURNAL OF AUTOMATIC CHEMISTRY, VOLUME: 18, ISSUE: 1, PAGES: 17-21
2485
TITLE: Interaction of fulvic acids with Al(III) studied by self-modeling curve resolution of second-derivative synchronous fluorescence spectra
AUTHORS: daSilva, JCGE ; Machado, AASC;
PUBLISHED: 1996, SOURCE: APPLIED SPECTROSCOPY, VOLUME: 50, ISSUE: 4, PAGES: 436-443
AUTHORS: daSilva, JCGE ; Machado, AASC;
PUBLISHED: 1996, SOURCE: APPLIED SPECTROSCOPY, VOLUME: 50, ISSUE: 4, PAGES: 436-443
2486
TITLE: Interaction of Fulvic Acids with Al(III) Studied by Self-Modeling Curve Resolution of Second-Derivative Synchronous Fluorescence Spectra
AUTHORS: Joaquim Esteves G E Da Silva ; Adélio A S C Machado;
PUBLISHED: 1996, SOURCE: Applied Spectroscopy, VOLUME: 50, ISSUE: 4, PAGES: 436-443
AUTHORS: Joaquim Esteves G E Da Silva ; Adélio A S C Machado;
PUBLISHED: 1996, SOURCE: Applied Spectroscopy, VOLUME: 50, ISSUE: 4, PAGES: 436-443
2487
TITLE: Monitoring of molecular transformations in acid-base reactions by evolving factor analysis of Fourier transform infrared spectra data
AUTHORS: daSilva, JCG ; Machado, AASC; Oliveira, CJS ;
PUBLISHED: 1996, SOURCE: TALANTA, VOLUME: 43, ISSUE: 9, PAGES: 1443-1456
AUTHORS: daSilva, JCG ; Machado, AASC; Oliveira, CJS ;
PUBLISHED: 1996, SOURCE: TALANTA, VOLUME: 43, ISSUE: 9, PAGES: 1443-1456
2488
TITLE: Quantitative study of Be(II) complexation by soil fulvic acids by molecular fluorescence spectroscopy
AUTHORS: daSilva, JCGE ; Machado, AASC; Ramos, MA; Arce, F; Rey, F;
PUBLISHED: 1996, SOURCE: ENVIRONMENTAL SCIENCE & TECHNOLOGY, VOLUME: 30, ISSUE: 11, PAGES: 3155-3160
AUTHORS: daSilva, JCGE ; Machado, AASC; Ramos, MA; Arce, F; Rey, F;
PUBLISHED: 1996, SOURCE: ENVIRONMENTAL SCIENCE & TECHNOLOGY, VOLUME: 30, ISSUE: 11, PAGES: 3155-3160
2489
TITLE: Simultaneous use of evolving factor analysis of fluorescence spectral data and analysis of pH titration data for comparison of the acid-base properties of fulvic acids
AUTHORS: daSilva, JCGE; Machado, AASC ; Silva, CSPCO;
PUBLISHED: 1996, SOURCE: ANALYTICA CHIMICA ACTA, VOLUME: 318, ISSUE: 3, PAGES: 365-372
AUTHORS: daSilva, JCGE; Machado, AASC ; Silva, CSPCO;
PUBLISHED: 1996, SOURCE: ANALYTICA CHIMICA ACTA, VOLUME: 318, ISSUE: 3, PAGES: 365-372
2490
TITLE: Study of the interaction of a marine fulvic acid with Cu(II) at low concentration by molecular fluorescence and chemometrics
AUTHORS: daSilva, JCGE ; Machado, AASC;
PUBLISHED: 1996, SOURCE: ANALES DE QUIMICA, VOLUME: 92, ISSUE: 5, PAGES: 306-311
AUTHORS: daSilva, JCGE ; Machado, AASC;
PUBLISHED: 1996, SOURCE: ANALES DE QUIMICA, VOLUME: 92, ISSUE: 5, PAGES: 306-311
2491
TITLE: Study of the interaction of a soil fulvic acid with UO22+ by self-modelling mixture analysis of synchronous molecular fluorescence spectra
AUTHORS: daSilva, JCGE ; Machado, AASC; Oliveira, CJS ;
PUBLISHED: 1996, SOURCE: ANALYST, VOLUME: 121, ISSUE: 10, PAGES: 1373-1379
AUTHORS: daSilva, JCGE ; Machado, AASC; Oliveira, CJS ;
PUBLISHED: 1996, SOURCE: ANALYST, VOLUME: 121, ISSUE: 10, PAGES: 1373-1379
2492
TITLE: Temperature coefficient of the potential of zero charge and entropies of formation for the interface of stepped faces of gold in contact with aqueous perchloric acid solutions
AUTHORS: Silva, F ; Sottomayor, MJ ; Martins, A;
PUBLISHED: 1996, SOURCE: JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, VOLUME: 92, ISSUE: 20, PAGES: 3693-3699
AUTHORS: Silva, F ; Sottomayor, MJ ; Martins, A;
PUBLISHED: 1996, SOURCE: JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, VOLUME: 92, ISSUE: 20, PAGES: 3693-3699
2493
TITLE: Temperature coefficients and interfacial solvent structure
AUTHORS: Silva, AF ;
PUBLISHED: 1996, SOURCE: ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, VOLUME: 212, PAGES: 52-COLL
AUTHORS: Silva, AF ;
PUBLISHED: 1996, SOURCE: ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, VOLUME: 212, PAGES: 52-COLL
2494
TITLE: Thermochemical and theoretical study of some methyldiazines
AUTHORS: daSilva, MAVR ; Morais, VMF ; Matos, MAR ; Rio, CMA; Piedade, CMGS;
PUBLISHED: 1996, SOURCE: STRUCTURAL CHEMISTRY, VOLUME: 7, ISSUE: 5-6, PAGES: 329-336
AUTHORS: daSilva, MAVR ; Morais, VMF ; Matos, MAR ; Rio, CMA; Piedade, CMGS;
PUBLISHED: 1996, SOURCE: STRUCTURAL CHEMISTRY, VOLUME: 7, ISSUE: 5-6, PAGES: 329-336
2495
TITLE: Thermochemical studies for determination of the molar enthalpy of formation of aniline derivatives
AUTHORS: daSilva, MAVR ; Maria D. M. C. Ribeiro da Silva ; Monteiro, MFBM; Gomes, MLACN; Chickos, JS; Smith, AP; Liebman, JF;
PUBLISHED: 1996, SOURCE: STRUCTURAL CHEMISTRY, VOLUME: 7, ISSUE: 5-6, PAGES: 367-373
AUTHORS: daSilva, MAVR ; Maria D. M. C. Ribeiro da Silva ; Monteiro, MFBM; Gomes, MLACN; Chickos, JS; Smith, AP; Liebman, JF;
PUBLISHED: 1996, SOURCE: STRUCTURAL CHEMISTRY, VOLUME: 7, ISSUE: 5-6, PAGES: 367-373
2496
TITLE: Vapour pressures and standard molar enthalpies of sublimation of two crystalline iron(III) beta-diketonates. The mean molar (Fe-O) bond-dissociation enthalpies
AUTHORS: daSilva, MAVR ; M J S Monte ; Huinink, J;
PUBLISHED: 1996, SOURCE: JOURNAL OF CHEMICAL THERMODYNAMICS, VOLUME: 28, ISSUE: 4, PAGES: 413-419
AUTHORS: daSilva, MAVR ; M J S Monte ; Huinink, J;
PUBLISHED: 1996, SOURCE: JOURNAL OF CHEMICAL THERMODYNAMICS, VOLUME: 28, ISSUE: 4, PAGES: 413-419
2497
TITLE: Beryllium(II) as a Probe for Study of the Interactions of Metals and Fulvic Acids by Synchronous Fluorescence Spectroscopy
AUTHORS: Joaquim Esteves Da E D Silva ; Adélio A S C Machado; Teresa M O Garcia;
PUBLISHED: 1995, SOURCE: Applied Spectroscopy, VOLUME: 49, ISSUE: 10, PAGES: 1500-1506
AUTHORS: Joaquim Esteves Da E D Silva ; Adélio A S C Machado; Teresa M O Garcia;
PUBLISHED: 1995, SOURCE: Applied Spectroscopy, VOLUME: 49, ISSUE: 10, PAGES: 1500-1506
2498
TITLE: BERYLLIUM(II) AS A PROBE FOR STUDY OF THE INTERACTIONS OF METALS AND FULVIC-ACIDS BY SYNCHRONOUS FLUORESCENCE SPECTROSCOPY
AUTHORS: DASILVA, JCGE ; MACHADO, AASC ; GARCIA, TMO;
PUBLISHED: 1995, SOURCE: APPLIED SPECTROSCOPY, VOLUME: 49, ISSUE: 10, PAGES: 1500-1506
AUTHORS: DASILVA, JCGE ; MACHADO, AASC ; GARCIA, TMO;
PUBLISHED: 1995, SOURCE: APPLIED SPECTROSCOPY, VOLUME: 49, ISSUE: 10, PAGES: 1500-1506
2499
TITLE: CHARACTERIZATION OF THE ACID-BASE PROPERTIES OF HUMIC SUBSTANCES BY CHEMOMETRIC ANALYSIS OF SYNCHRONOUS FLUORESCENCE AND PH POTENTIOMETRIC DATA
AUTHORS: DASILVA, JCGE ; MACHADO, AASC ;
PUBLISHED: 1995, SOURCE: ANALYTICAL LETTERS, VOLUME: 28, ISSUE: 13, PAGES: 2401-2411
AUTHORS: DASILVA, JCGE ; MACHADO, AASC ;
PUBLISHED: 1995, SOURCE: ANALYTICAL LETTERS, VOLUME: 28, ISSUE: 13, PAGES: 2401-2411
2500
TITLE: Characterization of the acid-base properties of humic substances by chemometric analysis of synchronous fluorescence and ph potentiometric data
AUTHORS: Esteves da Silva, JCG ; Machado, AASC;
PUBLISHED: 1995, SOURCE: Analytical Letters, VOLUME: 28, ISSUE: 13, PAGES: 2401-2411
AUTHORS: Esteves da Silva, JCG ; Machado, AASC;
PUBLISHED: 1995, SOURCE: Analytical Letters, VOLUME: 28, ISSUE: 13, PAGES: 2401-2411