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Ian T. Cousins

Ian T. Cousins

Stockholm University
Sweden

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Environmental Sciences
Sweden
2026

D-Index & Metrics

Environmental Sciences

D-Index
86
Citations
34151
World Ranking
705
National Ranking
10

Chemistry

D-Index
84
Citations
30804
World Ranking
2774
National Ranking
40

Ian T. Cousins 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 Ian T. Cousins 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: 220 publications — 70th percentile

70% of scientists in this discipline score the same or lower.

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

Ian T. Cousins 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 Ian T. Cousins 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: 86 D-Index — 93rd percentile

93% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2026 - Research.com Environmental Sciences in Sweden Leader Award

Overview

Ian T. Cousins is affiliated with Stockholm University in Sweden and has a research focus predominantly within the domain of Environmental Science. Their work includes extensive investigation into per- and polyfluoroalkyl substances (PFAS), environmental chemistry, toxicology, and atmospheric science.

Their published papers cover various aspects of PFAS, addressing chemical definitions, environmental persistence, and planetary boundary frameworks. Key recent papers include:

  • "An overview of the uses of per- and polyfluoroalkyl substances (PFAS)" (2020) published in Environmental Science Processes & Impacts
  • "Outside the Safe Operating Space of a New Planetary Boundary for Per- and Polyfluoroalkyl Substances (PFAS)" (2022) published in Environmental Science & Technology
  • "A New OECD Definition for Per- and Polyfluoroalkyl Substances" (2021) published in Environmental Science & Technology
  • "The high persistence of PFAS is sufficient for their management as a chemical class" (2020) published in Environmental Science Processes & Impacts
  • "Are Fluoropolymers Really of Low Concern for Human and Environmental Health and Separate from Other PFAS?" (2020) published in Environmental Science & Technology

Cousins frequently collaborates with several researchers, including Martin Scheringer, Zhanyun Wang, Juliane Glüge, Rainer Lohmann, and Jamie C. DeWitt. This network has contributed to advancing understanding of chemical pollutants, toxicology, and environmental impacts.

Their publications appear mainly in the following scientific journals:

  • Environmental Science & Technology
  • Zenodo (CERN European Organization for Nuclear Research)
  • Environmental Science Processes & Impacts
  • Environmental Science & Technology Letters
  • ACS Environmental Au

Their primary fields of study include:

  • Environmental Science

Within these fields, key subfields of study encompass:

  • Health, Toxicology and Mutagenesis
  • Environmental Chemistry
  • Atmospheric Science
  • Mechanical Engineering
  • Materials Chemistry

The main research topics covered by Cousins include:

  • Per- and polyfluoroalkyl substances research
  • Toxic Organic Pollutants Impact
  • Atmospheric chemistry and aerosols
  • Air Quality and Health Impacts
  • Carbon Dioxide Capture Technologies
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Effects and risks of endocrine disrupting chemicals

Best Publications

  • Perfluoroalkyl and polyfluoroalkyl substances in the environment: Terminology, classification, and origins

    Robert C Buck;James Franklin;Urs Berger;Jason M Conder

  • Sources, fate and transport of perfluorocarboxylates.

    Konstantinos Prevedouros;Ian T. Cousins;Robert C. Buck;Stephen H. Korzeniowski

  • An overview of the uses of per- and polyfluoroalkyl substances (PFAS)

    Juliane Glüge;Martin Scheringer;Ian T. Cousins;Jamie C. DeWitt

  • A Never-Ending Story of Per- and Polyfluoroalkyl Substances (PFASs)?

    Zhanyun Wang;Jamie C. DeWitt;Christopher P. Higgins;Ian T. Cousins

  • Fluorinated alternatives to long-chain perfluoroalkyl carboxylic acids (PFCAs), perfluoroalkane sulfonic acids (PFSAs) and their potential precursors

    Zhanyun Wang;Ian T. Cousins;Martin Scheringer;Konrad Hungerbühler

  • Global emission inventories for C4-C14 perfluoroalkyl carboxylic acid (PFCA) homologues from 1951 to 2030, Part I: production and emissions from quantifiable sources.

    Zhanyun Wang;Ian T. Cousins;Martin Scheringer;Robert C. Buck

  • Outside the Safe Operating Space of a New Planetary Boundary for Per- and Polyfluoroalkyl Substances (PFAS)

    Unknown

  • Estimating consumer exposure to PFOS and PFOA.

    David Trudel;Lea Horowitz;Matthias Wormuth;Martin Scheringer

  • Hazard assessment of fluorinated alternatives to long-chain perfluoroalkyl acids (PFAAs) and their precursors: status quo, ongoing challenges and possible solutions.

    Zhanyun Wang;Ian T. Cousins;Martin Scheringer;Konrad Hungerbuehler

  • Tracking the pathways of human exposure to perfluorocarboxylates.

    Robin Vestergren;Ian T. Cousins

  • A New OECD Definition for Per- and Polyfluoroalkyl Substances.

    Zhanyun Wang;Andreas M Buser;Ian T Cousins;Silvia Demattio

  • Human exposure, hazard and risk of alternative plasticizers to phthalate esters

    Thuy T. Bui;Georgios Giovanoulis;Anna Palm Cousins;Jörgen Magnér

  • Towards the review of the European Union Water Framework Directive: Recommendations for more efficient assessment and management of chemical contamination in European surface water resources.

    Werner Brack;Werner Brack;Valeria Dulio;Marlene Ågerstrand;Ian Allan

  • Comparing the toxic potency in vivo of long-chain perfluoroalkyl acids and fluorinated alternatives

    Melissa I. Gomis;Robin Vestergren;Daniel Borg;Ian T. Cousins

  • The high persistence of PFAS is sufficient for their management as a chemical class

    Ian T. Cousins;Jamie C. DeWitt;Juliane Glüge;Gretta Goldenman

  • Are Fluoropolymers Really of Low Concern for Human and Environmental Health and Separate from Other PFAS

    Rainer Lohmann;Ian T Cousins;Jamie C DeWitt;Juliane Glüge

  • The Madrid Statement on Poly- and Perfluoroalkyl Substances (PFASs)

    Arlene Blum;Simona A. Balan;Martin Scheringer;Xenia Trier

  • Assessing the environmental fate of chemicals of emerging concern: a case study of the polybrominated diphenyl ethers

    Anna Palm;Ian T. Cousins;Donald Mackay;Mats Tysklind

  • Biodegradation of microcystin-LR by indigenous mixed bacterial populations

    I.T. Cousins;D.J. Bealing;H.A. James;A. Sutton

  • A review of the processes involved in the exchange of semi-volatile organic compounds (SVOC) across the air–soil interface

    Ian T. Cousins;Angus J. Beck;Kevin C. Jones

  • Modeling global-scale fate and transport of perfluorooctanoate emitted from direct sources.

    James Armitage;Ian T. Cousins;Robert C. Buck;Konstantinos Prevedouros

  • Using COSMOtherm to predict physicochemical properties of poly- and perfluorinated alkyl substances (PFASs)

    Zhanyun Wang;Matthew MacLeod;Ian T. Cousins;Martin Scheringer

  • A Multimedia Assessment of the Environmental Fate of Bisphenol A

    I.T. Cousins;C.A. Staples;G.M. Kleĉka;D. Mackay

  • Comparative assessment of the global fate and transport pathways of long-chain perfluorocarboxylic acids (PFCAs) and perfluorocarboxylates (PFCs) emitted from direct sources.

    James M Armitage;Matthew Macleod;Ian T Cousins

Frequent Co-Authors

Martin Scheringer
Martin Scheringer ETH Zurich
Urs Berger
Urs Berger Helmholtz Centre for Environmental Research
Matthew MacLeod
Matthew MacLeod Stockholm University
Donald Mackay
Donald Mackay Trent University
Kevin C. Jones
Kevin C. Jones Lancaster University
Leo Posthuma
Leo Posthuma Radboud University
Dorte Herzke
Dorte Herzke Norwegian Institute for Air Research
Konrad Hungerbühler
Konrad Hungerbühler ETH Zurich
Werner Brack
Werner Brack Helmholtz Centre for Environmental Research
Rolf Altenburger
Rolf Altenburger Helmholtz Centre for Environmental Research

External Links

Personal website of Ian T. Cousins Google Scholar page

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Related Online Degrees & Career Pathways

For those interested in Environmental Sciences, exploring related online degree options can broaden career prospects. Programs like dsw programs online offer pathways into social work fields that intersect with environmental justice and community wellbeing.

Additionally, pursuing a broader foundation through cheapest online general studies degree programs can provide essential skills across disciplines, useful for multidisciplinary environmental roles.

If you prefer a straightforward academic path, understanding what is the easiest bachelor's degree to get may guide you in choosing degrees that balance workload with career goals related to environmental sciences.

For more specialized training, consider a focused program such as a geologist degree online. It equips students with in-depth knowledge of earth systems, an essential component of environmental science careers.

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