Cited by 172Microplastics and Plastic PollutionEnvironmental Toxicology and EcotoxicologyPharmaceutical and Antibiotic Environmental Impacts

Advancing the quality of environmental microplastic research

Connors, Kristin A., Dyer, Scott D., Belanger, Scott E.·2017·Environmental Toxicology and Chemistry

Abstract

Investigations into the environmental fate and effects of microplastics have been gaining momentum. Small, insoluble polymeric particles are implicated by scientists in a wide variety of studies that are used to suggest a potential for widespread impacts in freshwater and marine pelagic and sediment environments. An exponential growth in scientific publications and an increase in regulatory attention have occurred. However, despite these efforts, the environmental hazard of these particles is still unknown. To evaluate the hazard of microplastics within a risk assessment context, we need a way to evaluate the quality of experimental studies. We performed a thorough review of the quality and focus of environmental microplastic research, to understand the methodologies employed and how this may assist or distract from the ability of environmental risk assessors to evaluate microplastics. We provide guidance to improve the reliability and relevance of ecotoxicological studies for regulatory and broader environmental assessments. Nine areas of needed improvement are identified and discussed. Important data gaps and experimental limitations are highlighted. Environ Toxicol Chem 2017;36:1697-1703. © 2017 SETAC.

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Crossref · 10.1002/etc.3829

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42 of 42 references verified0 citation errors · 0 not checkable

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  • Nonstandardized laboratory bioassays and unrealistic exposure scenarios impede understanding of microplastic risks.

    “The use of nonstandardized laboratory bioassays and unrealistic exposure scenarios hinders the understanding of the risks associated with microplastics.9,22,23”
  • Effect assessments for microplastics should target traditional ecotoxicological thresholds such as LC50 or EC50, and fitting dose-response models requires sufficient doses and replication.

    “Moreover, an effect assessment for microplastics should aim at detecting the effect thresholds for traditional end points in ecotoxicology (i.e., LC50 or EC50),22 and for this, sufficient doses and replication are needed in order to fit dose–response models, which are commonly used in chemical risk assessment.9”
  • Concerns have been raised about the quality, reliability, and usability of the limited ecological effect data on microplastics.

    “Current studies have mainly focused on the ingestion of microplastics;3 however, the quality, reliability, and usability of the few ecological effect data published have been put into question.22,23”

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Authors
Connors, K. A., Dyer, S. D., & Belanger, S. E.
Affiliations
Procter & Gamble (United States) (US)
Corresponding author
Connors, Kristin A.
Venue
Environmental Toxicology and Chemistry
Published
2017-07-01
Volume
36
Issue
7
Pages
1697-1703
ISSN
  • 0730-7268 (ISSN-L)
  • 1552-8618
OpenAlex
W2617126571
Cited by
172
References
42
Citations by year
2026: 6 · 2025: 13 · 2024: 14 · 2023: 20 · 2022: 22 · 2021: 27 · 2020: 29 · 2019: 14 · 2018: 23 · 2017: 4
FWCI
8.62
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Toxicology and Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Pollution › Microplastics and Plastic Pollution
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
Keywords
microplastics, research quality, environmental risk assessment, research design, data gaps, experimental limitations, regulatory evaluation, sediment microplastics
MeSH terms
Animals, Daphnia, Environmental Monitoring, Fishes, Particle Size, Plastics, Publishing, Research, Water Pollutants, Chemical, Zooplankton, Risk Assessment

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