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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 62 8781 7961 52 48 342 14412

Joaquim A. Nóbrega publications per year

The chart shows the history of publications by Joaquim A. Nóbrega between 1986 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Joaquim A. Nóbrega published across 40 years, from 1986 to 2025, averaging 10.1 papers a year. Output peaked at 26 publications in 2005. 7 of the 403 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1986 to 2025. Vertical axis: number of publications, 0 to 26. Peak 26 publications in 2005. 1986: 1 publication 1987: 1 publication 1988: 0 publications 1989: 1 publication 1990: 1 publication 1991: 3 publications 1992: 5 publications 1993: 3 publications 1994: 5 publications 1995: 7 publications 1996: 5 publications 1997: 6 publications 1998: 8 publications 1999: 12 publications 2000: 10 publications 2001: 19 publications 2002: 24 publications 2003: 11 publications 2004: 15 publications 2005: 26 publications 2006: 12 publications 2007: 14 publications 2008: 14 publications 2009: 16 publications 2010: 11 publications 2011: 21 publications 2012: 18 publications 2013: 18 publications 2014: 19 publications 2015: 12 publications 2016: 14 publications 2017: 15 publications 2018: 10 publications 2019: 12 publications 2020: 9 publications 2021: 9 publications 2022: 4 publications 2023: 5 publications 2024: 3 publications 2025: 4 publications
1986 2025

403 publications in total across all disciplines

View publications per year as a table
Joaquim A. Nóbrega: publications per year, 1986 to 2025
Year Publications
1986 1
1987 1
1988 0
1989 1
1990 1
1991 3
1992 5
1993 3
1994 5
1995 7
1996 5
1997 6
1998 8
1999 12
2000 10
2001 19
2002 24
2003 11
2004 15
2005 26
2006 12
2007 14
2008 14
2009 16
2010 11
2011 21
2012 18
2013 18
2014 19
2015 12
2016 14
2017 15
2018 10
2019 12
2020 9
2021 9
2022 4
2023 5
2024 3
2025 4
Total 403
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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.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 341–360 publications, is where this scientist sits. 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
61–80 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.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628 342
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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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.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 62–63 D-Index, is where this scientist sits. 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
40–41 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.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834 62
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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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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