World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
62
Citations
14412
World Ranking
8781
National Ranking
52

Joaquim A. Nóbrega publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Joaquim A. Nóbrega sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 342 publications — 71st percentile

71% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Joaquim A. Nóbrega D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Joaquim A. Nóbrega sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 62 D-Index — 52nd percentile

52% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

Joaquim A. Nóbrega is affiliated with the Federal University of São Carlos in Brazil. Their research primarily focuses on the field of Chemistry, with a significant body of work within Analytical Chemistry. Other subfields of study include Materials Chemistry, Organic Chemistry, Electrochemistry, and Food Science.

The scientist's work spans various main research topics, notably analytical chemistry methods development and electrochemical analysis and applications. Additional topics of interest encompass pesticide residue analysis and safety, crystallization and solubility studies, X-ray diffraction in crystallography, heavy metals in the environment, and mass spectrometry techniques and applications.

Joaquim A. Nóbrega has published extensively, with recent papers appearing between 2020 and 2022. Some of the recent publications include:

  • Dispersive liquid-liquid microextraction based on deep eutectic solvent for elemental impurities determination in oral and parenteral drugs by inductively coupled plasma optical emission spectrometry (2021, Analytica Chimica Acta)
  • Calculating limits of detection and defining working ranges for multi-signal calibration methods (2020, Journal of Analytical Atomic Spectrometry)
  • Ruthenium(II) Phosphine/Mercapto Complexes: Their in Vitro Cytotoxicity Evaluation and Actions as Inhibitors of Topoisomerase and Proteasome Acting as Possible Triggers of Cell Death Induction (2020, Inorganic Chemistry)
  • Is MIP-OES a suitable alternative to ICP-OES for trace element analysis? (2022, Journal of Analytical Atomic Spectrometry)
  • Effects of multiwalled carbon nanotubes co-exposure with cadmium on zebrafish cell line: Metal uptake and accumulation, oxidative stress, genotoxicity and cell cycle (2020, Ecotoxicology and Environmental Safety)

The frequent coauthors in Joaquim A. Nóbrega's publications include Legna Colina-Vegas, Alzir A. Batista, Fernanda C. Pinheiro, E.E. Castellano, and Ariane Isis Barros.

Nóbrega's research has appeared in several publication venues, with repeated contributions to The Cambridge Structural Database, Journal of Analytical Atomic Spectrometry, Microchemical Journal, Journal of the Brazilian Chemical Society, and Advances in Sample Preparation.

Best Publications

  • Equilibrium studies for the sorption of chromium and nickel from aqueous solutions using raw rice bran

    E.A. Oliveira;S.F. Montanher;A.D. Andrade;J.A. Nóbrega

  • Determination of lead in blood by tungsten coil electrothermal atomic absorption spectrometry

    Francisco J. Krug;Márcia M. Silva;Pedro V. Oliveira;Joaquim A. Nóbrega

  • Determination of ytterbium in animal faeces by tungsten coil electrothermal atomic absorption spectrometry

    Éder C. Lima;Francisco J. Krug;Joaquim A. Nóbrega;Ana Rita A. Nogueira

  • Determination of cadmium in biological materials by tungsten coil atomic absorption spectrometry

    Maria F. Giné;Francisco J. Krug;Vânia A. Sass;Boaventura F. Reis

  • Chemical modifiers in a tungsten coil electrothermal atomizer.

    Carlos G. Bruhn;José Y. Neira;Gonzalo D. Valenzuela;Joaquim A. Nóbrega

  • Atomization of Al in a tungsten coil electrothermal atomic absorption spectrophotometer.

    Pedro O. Luccas;Joaquim A. Nóbrega;Pedro V. Oliveira;Francisco J. Krug

  • Determination of dysprosium and europium in sheep faeces by graphite furnace and tungsten coil electrothermal atomic absorption spectrometry

    Júlio C.J Silva;Edivaldo E Garcia;Ana Rita A Nogueira;Joaquim A Nóbrega

  • Determination of Cobalt in Animal Feces by Tungsten Coil Atomic Absorption Spectrophotometry

    Gisele S. Lopes;Ana Rita A. Nogueira;Pedro V. Oliveira;Joaquim A. Nóbrega

  • Influence of Na, K, Ca and Mg on lead atomization by tungsten coil atomic absorption spectrometry

    Pedro V. de Oliveira;Francisco J. Krug;Marcia Messias da Silva;Joaquim de Araújo Nóbrega

  • Espectrometria Atômica com Atomização Eletrotérmica em Superfícies Metálicas

    Joaquim de A. Nóbrega;Márcia M. Silva;Pedro V. de Oliveira;Francisco J. Krug e Nivaldo Baccan

  • Determination of cadmium in hair and blood by tungsten coil electrothermal atomic absorption spectrometry with chemical modifiers.

    Carlos G Bruhn;José Y Neira;Gonzalo D Valenzuela;Joaquim A Nóbrega

  • Determination of cadmium and lead in mussels by tungsten coil electrothermal atomic absorption spectrometry.

    C.G. Bruhn;N.A. San Francisco;J.Y. Neira;J.A. Nóbrega

  • Avaliacão de programas de aquecimento para espectrometria de absorção atômica com atomizacão eletrotérmica em filamento de tungstênio

    Pedro V. Oliveira;Marciana Catanho;Joaquim A. Nóbrega;Pedro O. Luccas

  • Study of chemical modifiers for the determination of chromium in biological materials by tungsten coil electrothermal atomic absorption spectrometry

    C. G. Bruhn;J. Y. Neira;M. I. Guzmán;M. M. Darder

  • Thermogravimetric investigations on the mechanism of decomposition of Pb compounds on a tungsten surface

    Daniele M Santos;Pedro O Luccas;Joaquim A Nóbrega;Éder T.G Cavalheiro

  • Effect of acid concentration on closed-vessel microwave-assisted digestion of plant materials

    Geórgia C.L Araújo;Geórgia C.L Araújo;Mário H Gonzalez;Mário H Gonzalez;Antônio G Ferreira;Ana Rita A Nogueira

  • Sample preparation in alkaline media

    Joaquim A. Nóbrega;Mirian C. Santos;Rafael A. de Sousa;Solange Cadore

  • Determination of residual carbon by inductively-coupled plasma optical emission spectrometry with axial and radial view configurations

    Sandro T Gouveia;Fernando V Silva;Fernando V Silva;Letı́cia M Costa;Ana Rita A Nogueira

  • Flow analysis strategies to greener analytical chemistry. An overview

    Fábio R. P. Rocha;Joaquim A. Nóbrega;Orlando Fatibello Filho

  • Comparison of heating extraction procedures for Al, Ca, Mg, and Mn in tea samples.

    Letícia M. Costa;Sandro T. Gouveia;Joaquim A. Nóbrega

Frequent Co-Authors

Francisco José Krug
Francisco José Krug Universidade de São Paulo
Orlando Fatibello-Filho
Orlando Fatibello-Filho Federal University of São Carlos
Erico M.M. Flores
Erico M.M. Flores Universidade Federal de Santa Maria
Sergio Luis Costa Ferreira
Sergio Luis Costa Ferreira Federal University of Bahia
Márcia M. C. Ferreira
Márcia M. C. Ferreira State University of Campinas
Antonio Canals
Antonio Canals University of Alicante
Boaventura F. Reis
Boaventura F. Reis Universidade de São Paulo
Ramon M. Barnes
Ramon M. Barnes University of Massachusetts Amherst
Marco Aurélio Zezzi Arruda
Marco Aurélio Zezzi Arruda State University of Campinas
Eder C. Lima
Eder C. Lima Federal University of Rio Grande do Sul

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