International journal papers (I88 to I1):
I88 – Ana Catarina Rocha, Carla Palma, Ricardo J. N. Bettencourt da Silva, Sound uncertainty-based strategy for oil spill source identification, Chemometrics and Intelligent Laboratory Systems (Accepted 11/2024).
I87 – Ricardo J. N. Bettencourt da Silva, Pedro Salgueiro, Statistically sound identification of compounds by low-resolution GC-MS: Identification of tear agents in tear gas sprays, Talanta 282 (2025) 127061 (DOI: 10.1016/j.talanta.2024.127061).
I86 – Lucía Gutiérrez-Fernándeza, Cristina M. Oliveira, Ana María Díez-Pascual, María Paz San Andrés, Ricardo J.N. Bettencourt da Silva, Combining method validation data with additional information for measurement uncertainty evaluation – Determination of melatonin content in tea, Analytical Methods (2024) (DOI: 10.1039/D4AY01468E).
I85 – Ricardo J. N. Bettencourt da Silva, The issue of reporting the measurement uncertainty in accredited tests, Accreditation and Quality Assurance 29 (2024) 329-330 (DOI: 10.1007/s00769-024-01603-z)
I84 – Felipe Rebello Lourenço, Ricardo J. N. Bettencourt da Silva, Simplified and detailed evaluation of the uncertainty of the measurement of microbiological contamination of pharmaceutical products, (DOI: 10.1093/jaoacint/qsae04)
I83 – Diogo Ferreira, Cristina Oliveira, Virgínia Ferreira, Ricardo J. N. Bettencourt da Silva, Evaluation of kinetic constants uncertainty for the metrologically sound comparison of photodegradation efficiency using TiO2 catalysts, Microchemical Journal 199 (2024) 110179 (DOI 10.1016/j.microc.2024.110179).
I82 – José Miguel Almeida, Cecilie Singdahl-Larsen, Nina Buenaventura, Luís Gomes, Vanessa Morgado, Marianne Olsen, Ricardo J. N. Bettencourt da Silva, Carla Palma, Assessment and comparison of microplastic contamination in Atlantic navigation routes with known uncertainty, Environmental Science & Technology 57 (2023) 10062-10069 (DOI 10.1021/acs.est.3c00657).
I81 – Sergio Ferreira, Ravena Azevedo, Jucelino Silva Junior, Leonardo Teixeira, Ivanice Santos, Walter Santos, Antonio Queiroz, Olivia Oliveira, Lilian Guarieiro, Jeancarlo Anjos, Maria Zanoni, Ricardo J. N. Bettencourt da Silva, Carla Palma, Vanessa Morgado, Victor Cerda, Vanessa Hatjel, Rodrigo Pedreira, Emerging contaminants – general aspects: sources, substances involved, and quantification, Applied Spectroscopy Reviews 58 (2023) (DOI 10.1080/05704928.2023.2222804).
I80 – Ana Catarina Rocha, Carla Palma, Ricardo J. N. Bettencourt da Silva, Statistically sound comparison of standardized and simulation methods for oil spill source identification in real spill scenarios, Science of the Total Environment 887 (2023) 163930 (DOI: 10.1016/j.scitotenv.2023.163930).
I79 – Vanessa Morgado, Carla Palma, Ricardo J. N. Bettencourt da Silva, Determination of microplastic contamination levels and trends in vast oceanic sediment areas with uncertainty, Science of the Total Environment 884 (2023) 163612 (DOI: 10.1016/j.scitotenv.2023.163612).
I78 – Iryna Rehan, Pedro M. Félix, Vanessa Morgado, Ricardo J. N. Bettencourt da Silva, Carla Palma, Metrologically sound comparison of trace-metal levels in sea cucumber tissues from different species and habitats, Chemosphere 323 (2023) 138216 (DOI: 10.1016/j.chemosphere.2023.138216).
I77 – Carlos Borges, Carla Palma, Ricardo J. N. Bettencourt da Silva, Evaluation of temporal trends and correlations of physical-chemical parameters in vast oceanic areas robust to information uncertainty, Chemosphere 314 (2023) 137597 (DOI 10.1016/j.chemosphere.2022.137597)
I76 – Tomáš Pluháček, David Milde, Radka Pechancová, Ricardo J. N. Bettencourt da Silva, Bottom-up uncertainty evaluation of complex measurements from correlated performance data: Determination of total Cr in yeast by ICP-MS after acid digestion, Food Chemistry (2023) 134466 (DOI 10.1016/j.foodchem.2022.134466)
I75 – Ana Catarina Rocha, Carla Palma, Ricardo J. N. Bettencourt da Silva, Optimisation of the uncertainty of oil spill identification from replicate comparative analyses: Comparison of standardised and novel identification methods, Chemosphere, 308 (2022) 136201 (DOI 10.1016/j.chemosphere.2022.136201)
I74 – Vanessa Morgado, Carla Palma, Ricardo J. N. Bettencourt da Silva, Bottom-up evaluation of the uncertainty of the quantification of microplastics contamination in sediment samples, Environmental Science & Technology 56 (2022) 11080-11090 (DOI 10.1021/acs.est.2c01828) Open Access
I73 – Vanessa Morgado, Luís Gomes, Ricardo J. N. Bettencourt da Silva, Carla Palma, Microplastics contamination in sediments from Portuguese inland waters: Physical-chemical characterisation and distribution, Science of the Total Environment 832 (2022) 155053 (DOI 10.1016/j.scitotenv.2022.155053)
I72 – Ricardo J. N. Bettencourt da Silva, Ariadne Argyraki, Carlos Borges, Carla Palma, Michael H. Ramsey, Spatial Modelling of Concentration in Topsoil Using Random and Systematic Uncertainty Components: Comparison against Established Techniques, Analytical Letters 55 (2022) 2199-2219 (DOI 10.1080/00032719.2022.2050383)
I71 – Ricardo J. N. Bettencourt da Silva, Felipe Rebello Lourenço, D. Brynn Hibbert, Setting multivariate and correlated acceptance limits for assessing the conformity of items, Analytical Letters 55 (2022) 2011-2032 (DOI 10.1080/00032719.2022.2042549)
I70 – Ana Catarina Rocha, Carla Palma, Ricardo J. N. Bettencourt da Silva, Development and validation of statistically sound criteria for the match of unweathered GC-MS fingerprints in oil spill forensics, Chemosphere 289 (2022) 133085 (DOI 10.1016/j.chemosphere.2021.133085)
I69 – Ricardo J. N. Bettencourt da Silva, Jaan Saame, Bárbara Anes, Agnes Heering, Ivo Leito, Teemu Näykki, Daniela Stoica, Lisa Deleebeeck, Frank Bastkowski, Alan Snedden, M. Filomena Camões, Evaluation and validation of detailed and simplified models of the uncertainty of unified pHabs measurements in aqueous solutions, Analytica Chimica Acta 1182 (2021) 338923 (DOI 10.1016/j.aca.2021.338923).
I68 – Vanessa Morgado, Luís Gomes, Ricardo J. N. Bettencourt da Silva, Carla Palma, Validated spreadsheet for the identification of PE, PET, PP and PS microplastics by micro-ATR-FTIR spectra with known uncertainty, Talanta 234 (2021) 122624 (DOI 10.1016/j.talanta.2021.122624).
I67 – Vanessa Morgado, Carla Palma, Ricardo J. N. Bettencourt da Silva, Monte Carlo bottom-up evaluation of the uncertainty of complex sample preparation: Elemental determination in sediments, Analytica Chimica Acta 1175 (2021) 338732 (DOI 10.1016/j.aca.2021.338732).
I66 – Luciana Separovic, Ricardo J. N. Bettencourt da Silva, Felipe Rebello Lourenço, Determination of intrinsic and metrological components of the correlation of multiparameter products for minimising the risks of false conformity decisions, Measurement 180 (2021) 109531 (DOI 10.1016/j.measurement.2021.109531)
I65 – Ariely Cardoso, Ruben Costa, Sara Neves, Cristina M. Oliveira, Ricardo J. N. Bettencourt da Silva, Determination of dissolved oxygen in water by the Winkler method: Performance modelling and optimisation for environmental analysis, Microchemical Journal 165 (2021) 106129 (DOI 1.1016/j.microc.2021.106129).
I64 – Tomáš Pluháček, David Milde, Jitka Součková, Ricardo J. N. Bettencourtda Silva, Tutorial and spreadsheet for the evaluation of instrumental quantification uncertainty by the linear weighted regression model: Determination of elemental impurities in a nasal spray by ICP-MS, Talanta 225 (2021) 122044 (DOI 10.1016/j.talanta.2020.122044).
I63 – Vanessa Morgado, Carla Palma, Ricardo J. N. Bettencourt da Silva, Microplastics identification by Infrared spectroscopy – Evaluation of identification criteria and uncertainty by the Bootstrap method, Talanta 224 (2021) 121814 (DOI 10.1016/j.talanta.2020.121814).
I62 – Carlos Borges, Carla Palma, Tony Dadamos, Ricardo J. N. Bettencourt da Silva, Evaluation of seawater composition in a vast area from the Monte Carlo Simulation of georeferenced information in a Bayesian framework, Chemosphere 263 (2021) 128036 (DOI 10.1016/j.chemosphere.2020.128036).
I61 – David Milde, Tomáš Pluháček, Martin Kuba, Jitka Součková, Ricardo J. N. Bettencourtda Silva, Measurement uncertainty evaluation from correlated validation data: Determination of elemental impurities in pharmaceutical products by ICP-MS, Talanta 220 (2020) 121386 (DOI 10.1016/j.talanta.2020.12138)
I60 – Ilya Kuselman, Francesca Pennecchi, Ricardo J. N. Bettencourt da Silva, D. Brynn Hibbert, IUPAC/CITAC Guide: Evaluation of risks of false decisions in conformity assessment of a multicomponent material or object due to measurement uncertainty (IUPAC Technical Report), Pure and Applied Chemistry 93 (2021) 113-154 (DOI 10.1515/pac-2019-0906)
I59 – Carlos Borges, Ricardo J. N. Bettencourt da Silva, Carla Palma, Determination of river water composition trends with uncertainty: Seasonal variation of nutrients concentration in Tagus river estuary in the dry 2017 year, Marine Pollution Bulletin 158 (2020) 111371 (DOI 10.1016/j.marpolbul.2020.111371)
I58 – Vanessa Morgado, Carla Palma, Ricardo J. N. Bettencourt da Silva, Monte Carlo Bottom-up Evaluation of Global Instrumental Quantification Uncertainty: Flexible and user-friendly computational tool, Chemosphere 258 (2020) 127285 (DOI 10.1016/j.chemosphere.2020.127285)
I57 – Kelly S. Galhardo, Tony R. L. Dadamos, Ricardo J. N. Bettencourt da Silva, Sergio A. S. Machado, Development and validation of an advanced electrochemical sensor for the fast and cheap determination of hydrochlorothiazide in urine samples using the Monte-Carlo method for uncertainty evaluation, Talanta 215 (2020) 120883 (DOI 10.1016/j.talanta.2020.120883).
I56 – António J. Nunes, Paulo Paixão, Jorge Proença, Ricardo J. N. Bettencourt da Silva, Early warning of suspected doping from Biological Passport based on multivariate trends, International Journal of Sports Medicine 41 (2020) 44-53 (DOI 10.1055/a-1019-7774)
I55 – Rocío Mateos, Cristina M. Oliveira, Ana María Díez-Pascual, Soledad Vera-López, María Paz San Andrés, Ricardo J. N. Bettencourt da Silva, Impact of recovery correction or subjecting calibrators to sample preparation on measurement uncertainty: PAH determinations in waters, Talanta 207 (2020) 120274 (DOI 10.1016/j.talanta.2019.120274)
I54 – Ilya Kuselman, Francesca Pennecchi, Ricardo J. N. Bettencourt da Silva, D. Brynn Hibbert, How many shades of grey are in conformity assessment due to measurement uncertainty?, Journal of Physics: Conference Series, 1420 (2019) 012001 (DOI 10.1088/1742-6596/1420/1/012001)
I53 – Luciana Separovic, Ricardo J. N. Bettencourt da Silva, Felipe Rebello Lourenço, Improved spreadsheet method for determination of between components metrological correlation due to the sharing of analytical steps, Chemometrics and Intelligent Laboratory Systems 15 (2019) 161-168 (DOI 10.1016/j.chemolab.2019.05.002)
I52 – José Narciso, Susana Luz, Ricardo J. N. Bettencourt da Silva, Assessment of the Quality of Doping Substances Identification in Urine by GC/MS/MS, Analytical Chemistry 91 (2019) 6638-6644 (DOI 10.1021/acs.analchem.9b00560)
I51 – Carlos Borges, Carla Palma, Ricardo J. N. Bettencourt da Silva, Optimization of river sampling: application to nutrients distribution in Tagus river estuary, Analytical Chemistry 91 (2019) 5698-5705 (DOI 10.1021/acs.analchem.8b05781)
I50 – Ricardo J. N. Bettencourt da Silva, Felipe R. Lourenço, Francesca R. Pennecchi, D. Brynn Hibbert, Ilya Kuselman, Spreadsheet for evaluation of global risks in conformity assessment of a multicomponent material or object, Chemometrics and Intelligent Laboratory Systems 188 (2019) 1-5 (DOI 10.1016/j.chemolab.2019.02.010)
I49 – Tony Dadamos, Airton Damaceno, Fernando Fertonani, Ricardo J. N. Bettencourt da Silva, Standard Addition Method with Cumulative Additions: Monte Carlo Uncertainty Evaluation, Analytica Chimica Acta 1059 (2019) 28-35 (DOI 10.1016/j.aca.2019.02.002)
I48 – Diogo Ferreira, Miguel Barros, Cristina S. Oliveira, Ricardo J. N. Bettencourt da Silva, Quantification of the uncertainty of the visual detection of the end-point of a titration: determination of total hardness in water, Microchemical Journal 146 (2019) 856-863 (DOI 10.1016/j.microc.2019.01.069)
I47 – Felipe R. Lourenço, Alessandro M. Saviano, Ricardo J. N. Bettencourt da Silva, Measurement uncertainty for the potency estimation by Rapid Microbiological Methods (RMMs) with correlated data, Regulatory Toxicology and Pharmacology 102 (2019) 117-124 (DOI 10.1016/j.yrtph.2019.01.023)
I46 – Felipe R. Lourenço, Ricardo J. N. Bettencourt da Silva, Risk of false conformity decisions of multicomponent items controlled by correlated measurement results due to the sharing of analytical steps, Talanta 196 (2019) 174-181 (DOI 10.1016/j.talanta.2018.12.021)
I45 – Bárbara Anes, Ricardo J. N. Bettencourt da Silva, Cristina S. Oliveira, M. Filomena Camões, Seawater pH measurements with a combination glass electrode and high ionic strength TRIS-TRISHCl reference buffers – An Uncertainty Evaluation Approach, Talanta 193 (2019) 118-122 (DOI 10.1016/j.talanta.2018.09.075)
I44 – Carla Palma, Vanessa Morgado, Ricardo J. N. Bettencourt da Silva, Top-down evaluation of matrix effects uncertainty, Talanta 192 (2019) 278-287 (DOI 10.1016/j.talanta.2018.09.039) [Erratum]
I43 – Ricardo J. N. Bettencourt da Silva, Francesca Pennecchi, D. Brynn Hibbert, Ilya Kuselman, Tutorial and spreadsheets for Bayesian evaluation of risks of false decisions on conformity of a multicomponent material or object due to measurement uncertainty, Chemometrics and Intelligent Laboratory Systems 182 (2018) 109-116 (DOI 10.1016/j.chemolab.2018.09.004)
I42 – Tony R. L. Dadamos, Airton J. Damaceno, Fernando L. Fertonani, Ricardo J. N. Bettencourt da Silva, Standard addition method with cumulative spikes: uric acid determination in human serum by voltammetry with optimised uncertainty, Accreditation and Quality Assurance 23 (2018) 337-348 (DOI 10.1007/s00769-018-1350-8)
I41 – Bárbara Anes, Ricardo J. N. Bettencourt da Silva, Cristina S. Oliveira, M. Filomena Camões, Uncertainty evaluation of alkalinity measurements on seawater samples, Measurement 129 (2018) 395-404 (DOI 10.1016/j.measurement.2018.07.042)
I40 – Ilya Kuselman, Francesca Pennecchi, Ricardo J. N. Bettencourt da Silva, D. Brynn Hibbert, E. Anchutina, Total risk of a false decision on conformity of an alloy due to measurement uncertainty and correlation of test results, Talanta 189 (2018) 666-674 (DOI 10.1016/j.talanta.2018.07.049)
I39 – Francesca Pennecchi, Ilya Kuselman, Ricardo J. N. Bettencourt da Silva, D. Brynn Hibbert, Risk of a false decision on conformity of an environmental compartment due to measurement uncertainty of concentrations of two or more pollutants, Chemosphere 202 (2018) 165-176 (DOI 10.1016/j.chemosphere.2018.03.054)
I38 – Tony R. L. Dadamos, Airton J. Damaceno, Fernando L. Fertonani, Ricardo J. N. Bettencourt da Silva, Monte Carlo Simulations for the Evaluation of the Uncertainty of the Electrochemical Determination of Uric Acid in Plasma, Tchê Química 15 (2018) 196-203 (http://www.deboni.he.com.br/Periodico29.pdf).
I37 – Rui Cordeiro, Constantino Rosa, Ricardo. J. N. Bettencourt da Silva, Measurements recovery evaluation from the analysis of independent reference materials: Analysis of different samples with native quantity spiked at different levels, Accreditation and Quality Assurance 23 (2018) 57-71 (DOI 10.1007/s00769-017-1296-2)
I36 – Ilya Kuselman, Francesca Pennecchi, Ricardo J. N. Bettencourt da Silva, D. Brynn Hibbert, Risk of false decision on conformity of a multicomponent material when test results of the components’ content are correlated, Talanta 174 (2017) 789-796 (DOI 10.1016/j.talanta.2017.06.073)
I35 – Nuno F. Rosa, O. C. Monteiro, M. Filomena Camões, Ricardo. J. N. Bettencourt da Silva, Evaluation and optimisation of methylene blue removal measurement uncertainty in photodegradation studies, Accreditation and Quality Assurance 22 (2017) 217-226 (DOI 10.1007/s00769-017-1272-x)
I34 – Ilya Kuselman, Francesca Pennecchi, Ricardo J. N. Bettencourt da Silva, D. Brynn Hibbert, Conformity assessment of multicomponent materials or objects: Risk of false decisions due to measurement uncertainty – A case study of denatured alcohols, Talanta 164 (2017) 189-195 (DOI 10.1016/j.talanta.2016.11.035)
I33 – Ricardo J. N. Bettencourt da Silva, Evaluation of trace analyte identification in complex matrices by low-resolution gas chromatography – mass spectrometry through signal simulation, Talanta 150 (2016) 553-567 (DOI 10.1016/j.talanta.2015.12.033)
I32 – Ricardo J. N. Bettencourt da Silva, Spreadsheet for designing valid least-squares calibrations: A tutorial, Talanta 148 (2016) 177-190 (DOI 10.1016/j.talanta.2015.10.072)
I31 – Bárbara Anes, Ricardo J. N. Bettencourt da Silva, Hugo F. P. Martins, Cristina S. Oliveira, M. Filomena Camões, Compatibility of activity coefficients estimated experimentally and by Pitzer equations, Accreditation and Quality Assurance 21 (2016) 1-7 (DOI 10.1007/s00769-015-1163-y)
I30 – Philip D. P. Taylor, Danuta Barałkiewicz, Ricardo J. N. Bettencourt da Silva, Darinka B. Vončina, Ewa Bulska, M. Filomena Camoes, Ryszard Dobrowolski, Marc Elskens, Ivo Leito, Nineta H. Majcen, Petko Mandjukov, Josephine McCourt, Jérôme Randon, Paavo Perämäki, A summer school where master students learn the skills needed to work in an accredited analytical laboratory, Analytical and Bioanalytical Chemistry 407 (2015) 6899-6907 (DOI 10.1007/s00216-015-8804-1)
I29 – Cristina M. Oliveira, M. Filomena Camões, Paulina Bigus, Alejandro A. Fachado, Ricardo J. N. Bettencourt da Silva, Validation of atmospheric aerosols parallel sampling in a multifold device, Environmental Monitoring and Assessment 187:380 (2015) 1-9 (DOI 10.1007/s10661-015-4615-2)
I28 – Joana Rodrigues, Ricardo J. N. Bettencourt da Silva, M. Filomena G. F. C Camões, Cristina M. Oliveira, Designing valid and optimised standard addition calibrations: Application to the determination of anions in seawater, Talanta 142 (2015) 72-83 (DOI 10.1016/j.talanta.2015.04.031)
I27 – Ricardo J. N. Bettencourt da Silva, Alex Williams, Eurachem workshop on quality in analytical measurements: from specification to decision, Accreditation and Quality Assurance 20 (2015) 43-46 (DOI 10.1007/s00769-015-1103-x)
I26 – Ana G. Correia, Ricardo J. N. Bettencourt da Silva, Filipe Pedra, M. João Nunes, Assessment of the determination of heavy metals in organic soil improvers by ICP-OES, Accreditation and Quality Assurance 19 (2014) 87-97 (DOI 10.1007/s00769-013-1027-2)
I25 – Ricardo J. N. Bettencourt da Silva, Daniel M. Silveira, M. Filomena G. F. C. Camões, Carlos M. F. Borges, Pedro A. S. Salgueiro, Validation, Uncertainty and Quality Control of Qualitative Analysis of tear gas weapons by Gas Chromatography-Mass Spectrometry, Analytical Letters 47 (2014) 250-267 (DOI 10.1080/00032719.2013.832274)
I24 – Beatriz Brasil, Ricardo J. N. Bettencourt da Silva, M. Filomena G. F. C. Camões, Pedro Salgueiro, Weighted calibration with reduced number of signals by weighing factor modelling: Application to the identification of explosives by ion chromatography, Analytica Chimica Acta 804 (2013) 287-295 (DOI 10.1016/j.aca.2013.10.032)
I23 – Ricardo J. N. Bettencourt da Silva, Setting target measurement uncertainty in water analysis, Water 5 (2013) 1279-1302 (DOI 10.3390/w5031279) Open Access
I22 – Paulo J. A. Madeira, Pedro D. Vaz, Ricardo J. N. Bettencourt da Silva, M. Helena Florêncio, Can semi-empirical calculations help solve mass spectrometry problems? Protonation sites and proton affinities of amino acids, Chempluschem 78 (2013) 1149-1156 (DOI 10.1002/cplu.201300173)
I21 – Alejandro Arias, Ricardo J. N. Bettencourt da Silva, M. Filomena G. F. C. Camões, Cristina M. R. R. Oliveira, Evaluation of the performance of the determination of anions in the water soluble fraction of atmospheric aerosols, Talanta 104 (2013) 10-16 (DOI 10.1016/j.talanta.2012.11.024)
I20 – Pedro A. S. Salgueiro, Carlos M. F. Borges, Ricardo J. N. Bettencourt da Silva, Valid internal standard technique for arson detection based on gas chromatography–mass spectrometry, Journal of Chromatography A 1257 (2012) 189-194 (DOI 10.1016/j.chroma.2012.08.015)
I19 – Ricardo J. N. Bettencourt da Silva, Pedro M. V. B. F. Dias, M. Filomena G. F. C. Camões, Development and validation of a grouping method for pesticides analysed in foodstuffs, Food Chemistry 134 (2012) 2291-2302 (DOI 10.1016/j.foodchem.2012.03.081)
I18 – Daniel M. Silveira, Pedro A. S. Salgueiro, M. Filomena G. F. C. Camões, Ricardo J. N. Bettencourt da Silva, Development of metrological models for internal standard single-point and multi-point calibrations for the assessment of tear gas weapons compliance with legislation, Accreditation and Quality Assurance 17 (2012) 115-127 (DOI 10.1007/s00769-011-0861-3)
I17 – Ricardo J. N. Bettencourt da Silva, Alejandro Arias, Cristina M. R. R. Oliveira, M. Filomena G. F. C. Camões, Assessment of the determination of water-soluble ionic composition of atmospheric aerosols from the analysis of crossed halves of filters, Accreditation and Quality Assurance 17 (2012) 147-157 (DOI 10.1007/s00769-012-0889-z)
I16 – Ana M. E. Viana da Silva, Ricardo J. N. Bettencourt da Silva, M. Filomena G. F. C Camões, Optimization of the determination of chemical oxygen demand in wastewaters, Analytica Chimica Acta 699 (2011) 161-169 (DOI 10.1016/j.aca.2011.05.026)
I15 – Ricardo J. N. Bettencourt da Silva, M. Filomena G. F. C. Camões, Comparability of measurement results for pesticide residues in foodstuffs: an open issue?, Accreditation and Quality Assurance 15 (2010) 691-704 (DOI 10.1007/s00769-010-0725-2)
I14 – Ricardo J. N. Bettencourt da Silva, M. Filomena G. F. C Camões, Multivariate analysis of nutritional information of foodstuff of plant origin for the selection of representative matrices for the analysis of pesticide residues, Analytica Chimica Acta 674 (2010) 9-19 (DOI 10.1016/j.aca.2010.06.017)
I13 – Nataša Gros, M. Filomena G. F. C Camões, Ricardo J. N. Bettencourt da Silva, Uncertainty Budget for Simultaneous Determination of Minor and Major Ions in Seawater with Ion Chromatography Confronted With Uncertainties in Concentrations of Calibration Standards, Analytical Letters 43 (2010) 1317-1329 (DOI 10.1080/00032710903518732)
I12 – Ricardo J. N. Bettencourt da Silva, M. Filomena G. F. C Camões, The Quality of Standards in Least Squares Calibrations, Analytical Letters 43 (2010) 1257-1266 (DOI 10.1080/00032710903518674)
I11 – Nataša Gros, M. Filomena G. F. C Camões, Ricardo J. N. Bettencourt da Silva, Detailed uncertainty budget for major and minor ions in stock combined calibration standards — Influence of impurities in chemicals, Analytical Chimica Acta 659 (2010) 85-92 (DOI 10.1016/j.aca.2009.11.041)
I10 – Ricardo J. N. Bettencourt da Silva, Júlia R. Santos, M. Filomena G. F. C. Camões, Quantification of analytes affected by relevant interfering signals under quality controlled conditions, Analytica Chimica Acta 569 (2006) 210–220 (DOI 10.1016/j.aca.2006.03.093)
I9 – Ricardo J. N. Bettencourt da Silva, Júlia R. Santos, M. Filomena G. F. C. Camões, A New Terminology for the Approaches to the Quantification of the Measurement Uncertainty, Accreditation and Quality Assurance 10 (2006) 664-671 (DOI 10.1007/s00769-005-0071-y)
I8 – Ricardo J. N. Bettencourt da Silva, Júlia R. Santos, M. Filomena G. F. C. Camões, Evaluation of the analytical method performance for incurred samples, Analytica Chimica Acta 485 (2003) 241-252 (DOI 10.1016/S0003-2670(03)00407-0)
I7 – Ricardo J. N. Bettencourt da Silva, Helena Figueiredo, Júlia R. Santos, M. Filomena G. F. C. Camões, Evaluation of sample processing and sub-sampling performance, Analytica Chimica Acta 477 (2003) 169-185 (DOI 10.1016/S0003-2670(02)01421-6)
I6 – Ricardo J. N. Bettencourt da Silva, Júlia R. Santos, M. Filomena G. F. C. Camões, Worst case uncertainty estimates for routine instrumental analysis, Analyst 127 (2002) 957-963 (DOI 10.1039/B201362M)
I5 – Ricardo J. N. Bettencourt da Silva, M. João Lino, Júlia R. Santos, M. Filomena G. F. C. Camões, Evaluation of the sampling procedure adopted at the EU pesticide residues control to assess consumer exposure to high acute toxicity pesticides – methamidophos in sweet peppers, Accreditation and Quality Assurance 7 (2002) 195-201 (DOI 10.1007/s00769-002-0465-z)
I4 – Ricardo J. N. Bettencourt da Silva, M. João Lino, Alzira Ribeiro, Júlia R. Santos, Expression of results with uncertainty for the determination of pesticides in melon – experience in a proficiency test, Analyst 126 (2001) 743-746 (DOI 10.1039/B102163J)
I3 – Ricardo J. N. Bettencourt da Silva, M. João Lino, Júlia R. Santos, M. Filomena G. F. C. Camões, Estimation of precision and efficiency mass transfer steps for the determination of pesticides in vegetables aiming at the expression of results with reliable uncertainty, Analyst 125 (2000) 1459-1464 (DOI 10.1039/B000801J)
I2 – Ricardo J. N. Bettencourt da Silva, M. Filomena G. F. C. Camões, João Seabra e Barros, Validation and quality control schemes based on the expression of results with uncertainty, Analytica Chimica Acta 393 (1999) 167-175 (DOI 10.1016/S0003-2670(99)00337-2)
I1 – Ricardo J. N. Bettencourt da Silva, M. Filomena G. F. C. Camões, João Seabra e Barros, Validation of the Uncertainty Evaluation for the Determination of Metals in Solid Samples by Atomic Spectrometry, Accreditation and Quality Assurance 3 (1998) 155-160 (DOI 10.1007/s007690050210)
Book chapters (C2 to C1):
C2 – M. Filomena G. F. C. Camões, Ricardo J. N. Bettencourt da Silva, Chapter 7: Traceability of analytical measurements, Book: Improving traceability in food processing and distribution, Woodhead Publishing Limited (ISBN 1-85573-959-3), 2006.
C1 – Ricardo J. N. Bettencourt da Silva, M. Filomena G. F. C. Camões, João Seabra e Barros, Chapter 11: Validation of the uncertainty evaluation for the determination of metals in solid samples by atomic spectrometry, Book: Validation in Chemical Measurement, Springer (ISBN 978-3-540-20788-7), 2005.
Books (B3 to B4):
B4 – A. Mourato, A. P. Carvalho, F. Martins, T. Pamplona (Eds), Os Elementos em Ciências – Uma viagem pela Tabela Periódica, Faculdade de Ciências da Universidade de Lisboa, 2019.
B3 – Nineta Hrastelj, Ricardo J. N. Bettencourt da Silva (Eds), Traceability, Validation and Measurement Uncertainty in Chemistry: Vol.3, Springer (ISBN 978-3-030-20346-7), 2019. (Google Books)
B2 – Ricardo J. N. Bettencourt da Silva, Ewa Bulska, Martina Hedrich, Nineta Majcen, Bertil Magnusson, Snježana Marinčić, Ioannis Papadakis, Marina Patriarca, Emilia Vassileva, Philip Taylor, TrainMiC® Presentations, European Commission – Joint Research Centre – Institute for Reference Materials and Measurements (ISBN 978-92-79-38204-8), 2015.
B1 – Ricardo J. N. Bettencourt da Silva, Ewa Bulska, Beata Godlewska-Żyłkiewicz, Martina Hedrich, Nineta Majcen, Bertil Magnusson, Snježana Marinčić, Ioannis Papadakis, Marina Patriarca, Emilia Vassileva, Philip Taylor, Vaidotas Gegevičius, Analytical measurements: measurement uncertainty and statistics, European Commission – Joint Research Centre – Institute for Reference Materials and Measurements (ISBN 978-92-79-23070-7), 2012.
Guides (G9 to G1):
G9 – R. Bettencourt da Silva, S. L. R. Ellison (Eds.), Eurachem/CITAC Guide: Assessment of performance and uncertainty in qualitative chemical analysis, 1st ed., Eurachem, 2021 (ISBN 978-0-948926-39-6).
G8 – A. Williams, B. Magnusson (Eds.), Eurachem/CITAC Guide: Use of uncertainty information in compliance assessment, 2nd ed., Eurachem, 2021 (ISBN 978-0-948926-38-9).
G7 – F. Lourenço, G. Mello (Eds), Definindo e utilizando a incerteza alvo em medições químicas (Versão em Português), ForMEQ, 2020 (ISBN 978-65-00-12011-0).
G6 – R. Bettencourt da Silva, T. Dadamos (Eds), Guia Eurachem/CITAC: Utilização de informação da incerteza na avaliação de conformidade (Versão em Português), ForMEQ, 2019 (ISBN 978-989-8928-28-3).
G5 – S. L. R. Ellison, A. Williams (Eds), Eurachem/CITAC Guide: Metrological Traceability in Analytical measurement, 2nd ed., Eurachem, 2019 (ISBN 978-0-948926-34-1).
G4 – A. Castro, M. Trancoso, O. Pellegrino, R. Bettencourt Silva, M. Campo, A. Gomes, C. Flores, A. Nunes, C. Jesus, C. Silva, Carla Palma, P. Pestana, B. Alfaiate, P. Salgueiro, Guia RELACRE 31 – Quantificação da Incerteza de Medição em Ensaios Químicos, RELACRE, 2018 (ISBN 978-972-8574-46-8).
G3 – R. Bettencourt da Silva, A. Williams (Eds.), Eurachem/CITAC Guide: Setting and Using Target Uncertainty in Chemical Measurement, Eurachem, 2015 (ISBN 978-989-98723-7-0).
G2 – S. L. R. Ellison, A. Williams (Eds), Eurachem/CITAC guide: Quantifying Uncertainty in Analytical Measurement, 3rd ed., Eurachem, 2012 (ISBN 978-0-948926-30-3).
G1 – OGC007, Guia para a quantificação de incerteza em ensaios químicos, Instituto Português de Acreditação, IPAC, 2007.
CITAC News (C1 to C8):
C8 – R. Bettencourt da Silva, Bright metrology!, CITAC News 2023 (In press).
C7 – T. L. Teo, R. Bettencourt da Silva, CITAC/Eurachem online workshop on assessment of performance and uncertainty in qualitative chemical analysis, CITAC News 2022. (Link)
C6 – R. Bettencourt da Silva, First edition of the Eurachem/CITAC Guide on Assessment of performance and uncertainty in qualitative chemical analysis, CITAC News 2022. (Link)
C5 – R. Bettencourt da Silva, Message from the CITAC Secretary – When did measurement uncertainty become useful?, CITAC News 2022. (Link)
C4 – R. Bettencourt da Silva, Message from the CITAC Secretary – Can we be qualitatively sure about something?, CITAC News 2021. (Link)
C3 – R. Bettencourt da Silva, Message from the CITAC Secretary – More than statistically different…Metrologically different!, CITAC News 2020. (Link)
C2 – R. Bettencourt da Silva, Message from the CITAC Secretary – How test laboratories deal with the metrological traceability concept, CITAC News 2019. (Link)
C1 – R. Bettencourt da Silva, Message from the CITAC Secretary, CITAC News 2018. (Link)
National journal papers (N9 to N1):
N9 – Ricardo J. N. Bettencourt da Silva, A Química das Medições – Como é diferente a incerteza da diferença!, Revista – Medições e Ensaios, 17 (2023) In press
N8 – Ricardo J. N. Bettencourt da Silva, A Química das Medições – Celebrar o passado e o futuro da Metrologia em Química, Revista – Medições e Ensaios, 16 (2022) 40-42 Open Access
N7 – Ana Catarina Rocha, Carla Palma, Ricardo J. N. Bettencourt da Silva, Identificação da Origem de Derrames Petrolíferos com Critérios não Paramétricos de Dados de GC-MS, Química – Boletim da Sociedade Portuguesa de Química, 162 (2021) 209-215 (DOI 10.52590/M3.P697.A30002442) Open Access
N6 – Ricardo J. N. Bettencourt da Silva, A Química das Medições – “Segredos” conhecidos das avaliações de conformidade, Revista – Medições e Ensaios, 15 (2019) 39-40. (spmet.pt) Open Access
N5 – Ricardo J. N. Bettencourt da Silva, A Química das Medições – Calibrações em Química: Problemas e dicas, Revista – Medições e Ensaios, 14 (2017) 46-47. (spmet.pt) Open Access
N4 – Ricardo J. N. Bettencourt da Silva, A Democratização da Metrologia, Revista – Medições e Ensaios, 13 (2016) 15-21. (spmet.pt) Open Access
N3 – Ricardo J. N. Bettencourt da Silva, Júlia R. Santos, M. Filomena G. F. C. Camões, Avaliação do desempenho de um método analítico em função da origem do analito, Química – Boletim da Sociedade Portuguesa de Química 86 (2002) 47-50. (www.spq.pt) Open Access
N2 – Ricardo J. N. Bettencourt da Silva, M. Ascensão Trancoso, João Seabra e Barros, Incertezas de Interpolação de um Resultado duma Calibração em Espectrometria de Absorção Atómica, Indústria da Água 29 (1998) 37-43.
N1 – Ricardo J. N. Bettencourt da Silva, M. Filomena G. F. C. Camões, Electroforese Capilar, Química – Boletim da Sociedade Portuguesa de Química 56 (1995) 26-32. (www.spq.pt) Open Access
(2024/11/11)