World's Best Scientists 2026 revealed!
Robert J. Letcher

Robert J. Letcher

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Environmental Sciences
Canada
2026

D-Index & Metrics

Environmental Sciences

D-Index
109
Citations
38340
World Ranking
219
National Ranking
8

Research.com Recognitions

  • 2026 - Research.com Environmental Sciences in Canada Leader Award
  • 2025 - Research.com Environmental Sciences in Canada Leader Award
  • 2023 - Research.com Environmental Sciences in Canada Leader Award

Overview

Robert J. Letcher is affiliated with Carleton University in Canada and conducts research primarily in the field of Environmental Science. Their work focuses extensively on subfields such as Health, Toxicology and Mutagenesis, Ecology, Environmental Chemistry, Atmospheric Science, and Pollution.

Their research covers a range of topics, including:

  • Toxic Organic Pollutants Impact
  • Per- and polyfluoroalkyl substances research
  • Mercury impact and mitigation studies
  • Marine animal studies overview
  • Effects and risks of endocrine disrupting chemicals
  • Atmospheric chemistry and aerosols
  • Environmental Toxicology and Ecotoxicology

Robert J. Letcher has contributed to numerous scientific publications, with some of the most cited papers being:

  • "Side-chain fluorinated polymer surfactants in biosolids from wastewater treatment plants," 2020, Journal of Hazardous Materials
  • "Organophosphate (OP) diesters and a review of sources, chemical properties, environmental occurrence, adverse effects, and future directions," 2021, Environment International
  • "Functional Group-Dependent Screening of Organophosphate Esters (OPEs) and Discovery of an Abundant OPE Bis-(2-ethylhexyl)-phenyl Phosphate in Indoor Dust," 2020, Environmental Science & Technology
  • "Mercury contamination and potential health risks to Arctic seabirds and shorebirds," 2022, The Science of The Total Environment
  • "Established and emerging organophosphate esters (OPEs) and the expansion of an environmental contamination issue: A review and future directions," 2023, Journal of Hazardous Materials

The venues where Robert J. Letcher frequently publishes include:

  • Environmental Science & Technology
  • The Science of The Total Environment
  • Environmental Pollution
  • Environmental Research
  • SSRN Electronic Journal

The scientist often collaborates with colleagues including:

  • Kim J. Fernie
  • Runé Dietz
  • Chunsheng Liu
  • Christian Sonne
  • Shaogang Chu

Best Publications

  • Biological Monitoring of Polyfluoroalkyl Substances: A Review

    Magali Houde;Jonathan W. Martin;Robert J. Letcher;Keith R. Solomon

  • Monitoring of perfluorinated compounds in aquatic biota: an updated review.

    Magali Houde;Amila O. De Silva;Derek C. G. Muir;Robert J. Letcher

  • In Vitro Estrogenicity of Polybrominated Diphenyl Ethers, Hydroxylated PBDEs, and Polybrominated Bisphenol A Compounds

    I.A.T.M. Meerts;R.J. Letcher;S. Hoving;G. Marsh

  • Exposure and effects assessment of persistent organohalogen contaminants in arctic wildlife and fish.

    Robert J. Letcher;Jan Ove Bustnes;Rune Dietz;Bjørn M. Jenssen

  • Metabolism in the toxicokinetics and fate of brominated flame retardants—a review

    Heldur Hakk;Robert J. Letcher

  • 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

  • Debromination of the Flame Retardant Decabromodiphenyl Ether by Juvenile Carp (Cyprinus carpio) following Dietary Exposure

    Heather M. Stapleton;Mehran Alaee;Robert J. Letcher;Joel E. Baker

  • What are the toxicological effects of mercury in Arctic biota

    Rune Dietz;Christian Sonne;Niladri Basu;Birgit Braune

  • Debromination of polybrominated diphenyl ether congeners BDE 99 and BDE 183 in the intestinal tract of the common carp (Cyprinus carpio).

    Heather M. Stapleton;Robert J. Letcher;Joel E. Baker

  • Methyl Sulfone and Hydroxylated Metabolites of Polychlorinated Biphenyls

    Robert J. Letcher;Eva Klasson-Wehler;Ake Bergman

  • Predicting global killer whale population collapse from PCB pollution

    Jean-Pierre Desforges;Ailsa Hall;Bernie McConnell;Aqqalu Rosing-Asvid

  • Exposure to polybrominated diphenyl ethers (PBDEs): changes in thyroid, vitamin A, glutathione homeostasis, and oxidative stress in American kestrels (Falco sparverius).

    Kim J. Fernie;J. Laird Shutt;Greg Mayne;David Hoffman

  • Flame retardants and methoxylated and hydroxylated polybrominated diphenyl ethers in two Norwegian Arctic top predators: glaucous gulls and polar bears.

    Jonathan Verreault;Geir W. Gabrielsen;Shaogang Chu;Derek C. G. Muir

  • Effects of chloro-s-triazine herbicides and metabolites on aromatase activity in various human cell lines and on vitellogenin production in male carp hepatocytes.

    J. Thomas Sanderson;Robert J. Letcher;Marjoke Heneweer;J. P. Giesy

  • A review on organophosphate Ester (OPE) flame retardants and plasticizers in foodstuffs: Levels, distribution, human dietary exposure, and future directions.

    Jianhua Li;Luming Zhao;Robert J. Letcher;Yayun Zhang

  • Metabolism of polybrominated diphenyl ethers (PBDEs) by human hepatocytes in vitro.

    Heather M. Stapleton;Shannon M. Kelly;Ruoting Pei;Robert J. Letcher

  • Ozone treatment and the depletion of detectable pharmaceuticals and atrazine herbicide in drinking water sourced from the upper Detroit River, Ontario, Canada.

    Wenyi Hua;Erin R. Bennett;Robert J. Letcher

  • A Review of Organophosphate Esters in the Environment from Biological Effects to Distribution and Fate.

    Alana K. Greaves;Robert J. Letcher

  • Temporal Trends and Spatial Distribution of Non-polybrominated Diphenyl Ether Flame Retardants in the Eggs of Colonial Populations of Great Lakes Herring Gulls

    Lewis T. Gauthier;Dave Potter;Craig E. Hebert;Robert J. Letcher

  • Brominated flame retardants in polar bears (Ursus maritimus) from Alaska, the Canadian Arctic, East Greenland, and Svalbard.

    Derek C.G. Muir;Sean Backus;Andrew E. Derocher;Rune Dietz

  • Circumpolar study of perfluoroalkyl contaminants in polar bears (Ursus maritimus).

    Marla Smithwick;Scott A. Mabury;Keith R. Solomon;Christian Sonne

  • Current-Use Flame Retardants in the Eggs of Herring Gulls (Larus argentatus) from the Laurentian Great Lakes

    Lewis T Gauthier;Craig E Hebert;D V Chip Weseloh;Robert J Letcher

Frequent Co-Authors

Christian Sonne
Christian Sonne Aarhus University
Rune Dietz
Rune Dietz Aarhus University
Derek C. G. Muir
Derek C. G. Muir Environment and Climate Change Canada
Guanyong Su
Guanyong Su Nanjing University of Science and Technology
Frank F. Rigét
Frank F. Rigét Aarhus University
Bjørn Munro Jenssen
Bjørn Munro Jenssen Norwegian University of Science and Technology
Erik W. Born
Erik W. Born University of Alberta
Melissa A. McKinney
Melissa A. McKinney McGill University
Geir W. Gabrielsen
Geir W. Gabrielsen Norwegian Polar Institute
John P. Giesy
John P. Giesy University of Saskatchewan

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