World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
69
Citations
20437
World Ranking
6110
National Ranking
1860

Richard G. Zepp 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 Richard G. Zepp 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: 156 publications — 16th percentile

16% of scientists in this discipline score the same or lower.

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

Richard G. Zepp 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 Richard G. Zepp 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: 69 D-Index — 66th percentile

66% of scientists in this discipline score the same or lower.

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

Overview

Richard G. Zepp is affiliated with the Environmental Protection Agency in the United States. Their research primarily spans the domains of Environmental Science and Earth and Planetary Sciences, with notable contributions to the subfields of Health, Toxicology and Mutagenesis, Atmospheric Science, Pollution, Industrial and Manufacturing Engineering, and Global and Planetary Change.

Their work addresses several key topics including Microplastics and Plastic Pollution, Recycling and Waste Management Techniques, Atmospheric Ozone and Climate, Climate Change and Health Impacts, Air Quality and Health Impacts, Atmospheric Chemistry and Aerosols, and Climate Change and Geoengineering.

Frequent co-authors collaborating with Richard G. Zepp include Anthony L. Andrady, Paul W. Barnes, Janet F. Bornman, S. Madronich, and Marcel A. K. Jansen.

The main venues for their publications are Photochemical & Photobiological Sciences, Environmental Science Nano, Global Change Biology, Nature Nanotechnology, and The Science of The Total Environment.

Notable recent publications by Zepp include:

  • Nano-enabled pesticides for sustainable agriculture and global food security, 2022, Nature Nanotechnology
  • Oxidation and fragmentation of plastics in a changing environment; from UV-radiation to biological degradation, 2022, The Science of The Total Environment
  • Environmental effects of stratospheric ozone depletion, UV radiation, and interactions with climate change: UNEP Environmental Effects Assessment Panel, Update 2020, 2021, Photochemical & Photobiological Sciences
  • Environmental effects of stratospheric ozone depletion, UV radiation and interactions with climate change: UNEP Environmental Effects Assessment Panel, update 2019, 2020, Photochemical & Photobiological Sciences
  • Environmental effects of stratospheric ozone depletion, UV radiation, and interactions with climate change: UNEP Environmental Effects Assessment Panel, Update 2021, 2022, Photochemical & Photobiological Sciences

Best Publications

  • Hydroxyl radical formation in aqueous reactions (pH 3-8) of iron(II) with hydrogen peroxide : the photo-fenton reaction

    Richard G. Zepp;Bruce C. Faust;Juerg Hoigne

  • Role of photoreactions in the formation of biologically labile compounds from dissolved organic matter

    Mary Ann Moran;Richard G. Zepp

  • Carbon loss and optical property changes during long‐term photochemical and biological degradation of estuarine dissolved organic matter

    Mary Ann Moran;Wade M. Sheldon;Richard G. Zepp

  • Nitrate-induced photooxidation of trace organic chemicals in water.

    Richard G. Zepp;Juerg. Hoigne;Heinz. Bader

  • Photochemistry of aqueous iron(III)-polycarboxylate complexes : roles in the chemistry of atmospheric and surface waters

    Bruce C. Faust;Richard G. Zepp

  • Photosensitized transformations involving electronic energy transfer in natural waters: role of humic substances

    Richard G. Zepp;Patricia F. Schlotzhauer;R. Merritt. Sink

  • Dissolved organic fluorophores in southeastern US coastal waters: correction method for eliminating Rayleigh and Raman scattering peaks in excitation–emission matrices

    Richard G Zepp;Wade M Sheldon;Mary Ann Moran

  • Photochemical production of dissolved inorganic carbon from terrestrial organic matter: significance to the oceanic organic carbon cycle

    W. L. Miller;R. G. Zepp

  • Rates of direct photolysis in aquatic environment

    Unknown

  • Factors Influencing Photoreactions of Dissolved Organic Matter in a Coastal River of the Southeastern United States

    Huizhen Gao;Richard G. Zepp

  • Photochemical release of biologically available nitrogen from aquatic dissolved organic matter

    Karen L. Bushaw;Richard G. Zepp;Matthew A. Tarr;Daniel Schulz-Jander

  • Photochemistry of natural waters

    Oliver C. Zafiriou;Jacques Joussot-Dubien;Richard G. Zepp;Rod G. Zika

  • Release characteristics of selected carbon nanotube polymer composites

    Christopher Kingston;Richard Zepp;Anthony Andrady;Darrell Boverhof

  • Environmental effects of ozone depletion, UV radiation and interactions with climate change: UNEP Environmental Effects Assessment Panel, update 2017

    G. H. Bernhard;R. E. Neale;P. W. Barnes;P. J. Neale

  • Photoproduction of hydrated electrons from natural organic solutes in aquatic environments.

    Richard G. Zepp;Andre M. Braun;Juerg. Hoigne;Jerry A. Leenheer

  • Absorbance, absorption coefficient, and apparent quantum yield: A comment on common ambiguity in the use of these optical concepts

    Chuanmin Hu;Frank E. Muller-Karger;Richard G. Zepp

  • Interactive effects of solar UV radiation and climate change on biogeochemical cycling

    R. G. Zepp;D. J. Erickson;N. D. Paul;B. Sulzberger

  • Sunlight-mediated inactivation of health-relevant microorganisms in water: a review of mechanisms and modeling approaches

    Kara L. Nelson;Alexandria B. Boehm;Robert J. Davies-Colley;Michael C. Dodd

  • Reactive Oxygen Species in Natural Waters

    Neil V. Blough;Richard G. Zepp

  • Comparison of photochemical behavior of various humic substances in water: I. Sunlight induced reactions of aquatic pollutants photosensitized by humic substances

    Richard G. Zepp;George L. Baughman;Patricia F. Schlotzhauer

  • Potential release scenarios for carbon nanotubes used in composites

    Bernd Nowack;Raymond M. David;Heinz Fissan;Howard Morris

  • Reactivity of the carbonate radical with aniline derivatives

    Richard A. Larson;Richard G. Zepp

Frequent Co-Authors

Nigel D. Paul
Nigel D. Paul Lancaster University
William L. Miller
William L. Miller University of Georgia
Mary Ann Moran
Mary Ann Moran University of Georgia
David J. Erickson
David J. Erickson Oak Ridge National Laboratory
Carlos L. Ballaré
Carlos L. Ballaré University of Buenos Aires
Richard McKenzie
Richard McKenzie National Institute of Water and Atmospheric Research
Alkiviadis F. Bais
Alkiviadis F. Bais Aristotle University of Thessaloniki
Donat-P. Häder
Donat-P. Häder University of Erlangen-Nuremberg
Janet F. Bornman
Janet F. Bornman Curtin University
Mercedes M. C. Bustamante
Mercedes M. C. Bustamante University of Brasília

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