World's Best Scientists 2026 revealed!
Award Badge
Environmental Sciences
Canada
2023

D-Index & Metrics

Environmental Sciences

D-Index
64
Citations
13430
World Ranking
2349
National Ranking
96

Chemistry

D-Index
61
Citations
11068
World Ranking
9410
National Ranking
245

Paul A. Helm 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 Paul A. Helm 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: 139 publications — 35th percentile

35% of scientists in this discipline score the same or lower.

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

Paul A. Helm 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 Paul A. Helm 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: 64 D-Index — 77th percentile

77% 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

  • 2023 - Research.com Environmental Sciences in Canada Leader Award

Overview

Paul A. Helm is affiliated with the Ministry of the Environment, Conservation and Parks in Canada. Their research primarily focuses on environmental science with a strong emphasis on pollution and industrial processes linked to environmental impact.

The main fields of study for Paul A. Helm include environmental science, with subfields covering pollution, industrial and manufacturing engineering, health, toxicology and mutagenesis, water science and technology, and molecular biology.

Their research topics encompass:

  • Microplastics and plastic pollution
  • Recycling and waste management techniques
  • Toxic organic pollutants impact
  • Pharmaceutical and antibiotic environmental impacts
  • Effects and risks of endocrine disrupting chemicals
  • Water treatment and disinfection
  • Metabolomics and mass spectrometry studies

Paul A. Helm has authored papers published in several frequent venues:

  • Environmental Science & Technology
  • ACS ES&T Water
  • Journal of Great Lakes Research
  • The Science of The Total Environment
  • Archives of Environmental Contamination and Toxicology

Recent notable papers include:

  • Microplastics entering northwestern Lake Ontario are diverse and linked to urban sources (2020, Water Research)
  • Sampling and Quality Assurance and Quality Control: A Guide for Scientists Investigating the Occurrence of Microplastics Across Matrices (2020, Applied Spectroscopy)
  • The Tire Wear Compounds 6PPD-Quinone and 1,3-Diphenylguanidine in an Urban Watershed (2021, Archives of Environmental Contamination and Toxicology)
  • Evidence of Microplastic Translocation in Wild-Caught Fish and Implications for Microplastic Accumulation Dynamics in Food Webs (2021, Environmental Science & Technology)
  • Detection of selected tire wear compounds in urban receiving waters (2021, Environmental Pollution)

Frequent co-authors collaborating with Paul A. Helm include:

  • Chelsea M. Rochman
  • Miriam L. Diamond
  • Karl J. Jobst
  • Sonya Kleywegt
  • Liisa M. Jantunen

This combination of frequent venues, research topics, and collaborations indicates an active engagement in studies related to environmental contamination, particularly involving microplastics, toxic pollutants, and emerging contaminants in aquatic ecosystems.

Best Publications

  • Sources and sinks of microplastics in Canadian Lake Ontario nearshore, tributary and beach sediments

    Anika Ballent;Patricia L. Corcoran;Odile Madden;Paul A. Helm

  • Fluorinated organic compounds in an eastern Arctic marine food web.

    Gregg T Tomy;Wes Budakowski;Thor Halldorson;Paul A Helm

  • Persistent organic pollutants and mercury in marine biota of the Canadian Arctic: An overview of spatial and temporal trends

    B.M. Braune;P.M. Outridge;A.T. Fisk;D.C.G. Muir

  • Hidden plastics of Lake Ontario, Canada and their potential preservation in the sediment record

    Patricia L. Corcoran;Todd Norris;Trevor Ceccanese;Mary Jane Walzak

  • Impacts of temperature and selected chemical digestion methods on microplastic particles.

    Keenan Munno;Paul A. Helm;Donald A. Jackson;Chelsea Rochman

  • Temporal and spatial variabilities of atmospheric polychlorinated biphenyls (PCBs), organochlorine (OC) pesticides and polycyclic aromatic hydrocarbons (PAHs) in the Canadian Arctic: Results from a decade of monitoring

    H. Hung;P. Blanchard;C.J. Halsall;T.F. Bidleman

  • Microplastics entering northwestern Lake Ontario are diverse and linked to urban sources

    Jelena Grbić;Paul Helm;Samantha Athey;Chelsea M. Rochman

  • Sampling and Quality Assurance and Quality Control: A Guide for Scientists Investigating the Occurrence of Microplastics Across Matrices.

    Susanne M Brander;Violet Compton Renick;Melissa M Foley;Clare Steele

  • Isomers of dechlorane plus in Lake Winnipeg and Lake Ontario food webs.

    Gregg T. Tomy;Kerri Pleskach;Nargis Ismail;D. Michael Whittle

  • Sampling in the Great Lakes for pharmaceuticals, personal care products, and endocrine-disrupting substances using the passive polar organic chemical integrative sampler.

    Hongxia Li;Paul A. Helm;Chris D. Metcalfe

  • The Tire Wear Compounds 6PPD-Quinone and 1,3-Diphenylguanidine in an Urban Watershed

    Cassandra Johannessen;Paul Helm;Brent Lashuk;Viviane Yargeau

  • Dechlorane Plus Levels in Sediment of the Lower Great Lakes

    E. D. Sverko;Gregg T. Tomy;Chris H. Marvin;Donna Zaruk

  • Evidence of Microplastic Translocation in Wild-Caught Fish and Implications for Microplastic Accumulation Dynamics in Food Webs.

    Hayley K. McIlwraith;Joel Kim;Paul Helm;Paul Helm;Satyendra P. Bhavsar;Satyendra P. Bhavsar

  • Chlordane enantiomers and temporal trends of chlordane isomers in arctic air.

    Terry F. Bidleman;Liisa M. M. Jantunen;Paul A. Helm;Eva Brorström-Lunden

  • Passive sampling methods for contaminated sediments: Scientific rationale supporting use of freely dissolved concentrations

    Philipp Mayer;Thomas F Parkerton;Rachel G Adams;John G Cargill

  • Detection of selected tire wear compounds in urban receiving waters.

    Cassandra Johannessen;Paul Helm;Chris D. Metcalfe

  • Current combustion-related sources contribute to polychlorinated naphthalene and dioxin-like polychlorinated biphenyl levels and profiles in air in Toronto, Canada.

    Paul A. Helm;Terry F. Bidleman

  • The effects of dissolved organic matter and pH on sampling rates for polar organic chemical integrative samplers (POCIS).

    Hongxia Li;Paul A. Helm;Gordon Paterson;Chris D. Metcalfe

  • Enantioselective bioaccumulation of hexabromocyclododecane and congener-specific accumulation of brominated diphenyl ethers in an eastern Canadian Arctic marine food web.

    Gregg T. Tomy;Kerri Pleskach;Tyler Oswald;Thor Halldorson

  • Brominated and chlorinated flame retardants in Lake Ontario, Canada, lake trout (Salvelinus namaycush) between 1979 and 2004 and possible influences of food-web changes

    Nargis Ismail;Sarah B. Gewurtz;Sarah B. Gewurtz;Kerri Pleskach;D. Michael Whittle

  • Passive sampling methods for contaminated sediments: Scientific rationale supporting use of freely dissolved concentrations

    Philipp Mayer;Thomas F Parkerton;John G Cargill;Jay Gan

Frequent Co-Authors

Chris H. Marvin
Chris H. Marvin Environment and Climate Change Canada
Eric J. Reiner
Eric J. Reiner Ministry of the Environment, Conservation and Parks
Liisa M. Jantunen
Liisa M. Jantunen University of Toronto
Gary A. Stern
Gary A. Stern University of Manitoba
Gregg T. Tomy
Gregg T. Tomy University of Manitoba
Terry F. Bidleman
Terry F. Bidleman Umeå University
Derek C. G. Muir
Derek C. G. Muir Environment and Climate Change Canada
Satyendra P. Bhavsar
Satyendra P. Bhavsar University of Toronto
Chris D. Metcalfe
Chris D. Metcalfe Trent University
Chelsea M. Rochman
Chelsea M. Rochman University of Toronto

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Pursuing a career in Environmental Sciences often intersects with diverse fields such as sociology, education, and social work. For those interested in understanding human-environment interactions, a bachelors degree in sociology online can provide valuable insights into societal behaviors and community impacts on the environment.

Educators aiming to advance their expertise may explore streamlined options like an edd without dissertation, allowing them to gain leadership skills without the extensive dissertation process. Furthermore, transitioning between degrees is supported by pathways such as eds to edd programs, helping professionals enhance their qualifications efficiently.

For those passionate about social welfare aspects of environmental issues, exploring options like the cheapest online dsw programs can open doors to advanced social work careers with a focus on sustainability and community health. These diverse online degrees offer flexible, affordable routes for building a multifaceted career in Environmental Sciences.

Best Scientists Citing Paul A. Helm

Trending Scientists

Recently Published Articles