World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
43
Citations
11755
World Ranking
6941
National Ranking
2471

Richard T. Wilkin publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Richard T. Wilkin sits on this spectrum.

41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 283 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 98 publications — 12th percentile

12% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

Richard T. Wilkin D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Richard T. Wilkin sits on this spectrum.

30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 199 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 19 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125+ D-Index: 99 scientists
30 D-Index 125+

This scientist: 43 D-Index — 29th percentile

29% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 125 D-Index or more.

Overview

Richard T. Wilkin is affiliated with the Environmental Protection Agency in the United States. Their research primarily focuses on environmental science, with significant contributions to environmental chemistry, health, toxicology and mutagenesis, geochemistry and petrology, pollution, and biomedical engineering.

Their work revolves around core topics such as mine drainage and remediation techniques, groundwater and isotope geochemistry, heavy metals in the environment, per- and polyfluoroalkyl substances (PFAS) research, toxic organic pollutants impact, arsenic contamination and mitigation, and radioactive element chemistry and processing.

Wilkin has published extensively in well-known scientific journals. Frequent publication venues include:

  • Environmental Science & Technology
  • The Science of The Total Environment
  • Geoscience Frontiers
  • Applied Geochemistry
  • Journal of Environmental Management

Among notable recent papers authored or co-authored by Wilkin are:

  • Rare-Earth Elements as Natural Tracers for In Situ Remediation of Groundwater, 2020, Environmental Science & Technology
  • Per- and polyfluoroalkyl substances in water and wastewater: A critical review of their global occurrence and distribution, 2021, The Science of The Total Environment
  • Limitations of Current Approaches for Predicting Groundwater Vulnerability from PFAS Contamination in the Vadose Zone, 2021, Groundwater Monitoring & Remediation
  • Long-term performance evaluation of zero-valent iron amended permeable reactive barriers for groundwater remediation - A mechanistic approach, 2022, Geoscience Frontiers
  • Mechanisms of water-rock interaction and implications for remediating flooded mine workings elucidated from environmental tracers, stable isotopes, and rare earth elements, 2023, Applied Geochemistry

Wilkin frequently collaborates with several researchers, including:

  • Michael Lawrinenko
  • Sudarshan Kurwadkar
  • Tony R. Lee
  • William C. Brandon
  • Matt Rovero

The scientist's research contributions span 37 publications classified under Environmental Science, with subfield emphasis in:

  • Environmental Chemistry
  • Health, Toxicology and Mutagenesis
  • Geochemistry and Petrology
  • Pollution
  • Biomedical Engineering

Best Publications

  • The size distribution of framboidal pyrite in modern sediments: an indicator of redox conditions

    R.T. Wilkin;H.L. Barnes;S.L. Brantley

  • Cadmium in soils and groundwater: A review.

    Andreas Kubier;Richard T. Wilkin;Thomas Pichler

  • Formation processes of framboidal pyrite

    R.T. Wilkin;H.L. Barnes

  • Per- and polyfluoroalkyl substances in water and wastewater: A critical review of their global occurrence and distribution.

    Sudarshan Kurwadkar;Sudarshan Kurwadkar;Jason Dane;Sushil R. Kanel;Mallikarjuna N. Nadagouda

  • Pyrite formation by reactions of iron monosulfides with dissolved inorganic and organic sulfur species

    R.T. Wilkin;H.L. Barnes

  • Reaction pathways in the Fe-S system below 100°C

    Liane G Benning;Rick T Wilkin;H.L Barnes

  • Formation of ferrihydrite and associated iron corrosion products in permeable reactive barriers of zero-valent iron.

    Yoko Furukawa;Jin Wook Kim;Janet Watkins;Richard T. Wilkin

  • History of water-column anoxia in the Black Sea indicated by pyrite framboid size distributions

    Richard T. Wilkin;Michael A. Arthur;Walter E. Dean

  • High-level arsenite removal from groundwater by zero-valent iron.

    Hsing-Lung Lien;Richard T. Wilkin

  • Chromium-removal processes during groundwater remediation by a zerovalent iron permeable reactive barrier.

    Richard T. Wilkin;Chunming Su;Robert G. Ford;Cynthia J. Paul

  • Long‐Term Performance of Permeable Reactive Barriers Using Zero‐Valent Iron: Geochemical and Microbiological Effects

    Richard T. Wilkin;Robert W. Puls;Guy W. Sewell

  • Speciation of arsenic in sulfidic waters

    Richard T Wilkin;Dirk Wallschläger;Robert G Ford

  • Laboratory evaluation of zero-valent iron to treat water impacted by acid mine drainage.

    Richard T. Wilkin;Mary S. McNeil

  • Variations in pyrite texture, sulfur isotope composition, and iron systematics in the Black Sea: evidence for Late Pleistocene to Holocene excursions of the o2-h2s redox transition

    Richard T. Wilkin;Michael A. Arthur

  • Geochemical impacts to groundwater from geologic carbon sequestration: controls on pH and inorganic carbon concentrations from reaction path and kinetic modeling.

    Richard T. Wilkin;Dominic C. DiGiulio

  • Fifteen-year assessment of a permeable reactive barrier for treatment of chromate and trichloroethylene in groundwater.

    Richard T. Wilkin;Steven D. Acree;Randall R. Ross;Robert W. Puls

  • Pyrite formation in an anoxic estuarine basin

    Richard T. Wilkin;H. L. Barnes

  • Pyrite formation in the water column and sediments of a meromictic lake

    Neil S. Suits;Rick T. Wilkin

  • In Situ Chemical Reduction of Cr(VI) in Groundwater Using a Combination of Ferrous Sulfate and Sodium Dithionite: A Field Investigation

    Ralph D. Ludwig;Chunming Su;Tony R. Lee;Richard T. Wilkin

  • Perchlorate behavior in a municipal lake following fireworks displays.

    Richard T. Wilkin;Dennis D. Fine;Nicole G. Burnett

Frequent Co-Authors

John T. Wilson
John T. Wilson Environmental Protection Agency
Michael A. Arthur
Michael A. Arthur Pennsylvania State University
Beth L. Parker
Beth L. Parker University of Guelph
Liane G. Benning
Liane G. Benning Freie Universität Berlin
Yongsong Huang
Yongsong Huang Brown University
Katherine H. Freeman
Katherine H. Freeman Pennsylvania State University
Kirk G. Scheckel
Kirk G. Scheckel Environmental Protection Agency
Timothy R. Filley
Timothy R. Filley University of Oklahoma
Susan L. Brantley
Susan L. Brantley Pennsylvania State University
Alexandra Navrotsky
Alexandra Navrotsky Arizona State University

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