Toward an ecotoxicological risk assessment of microplastics: Comparison of available hazard and exposure data in freshwaters.
Freshwater
Microplastics
Probabilistic risk assessment
Probabilistic species sensitivity distribution
Journal
Environmental toxicology and chemistry
ISSN: 1552-8618
Titre abrégé: Environ Toxicol Chem
Pays: United States
ID NLM: 8308958
Informations de publication
Date de publication:
02 2019
02 2019
Historique:
received:
27
09
2018
revised:
09
11
2018
accepted:
19
11
2018
pubmed:
30
11
2018
medline:
11
5
2019
entrez:
30
11
2018
Statut:
ppublish
Résumé
Microplastics have been detected in freshwaters all over the world in almost all samples, and ecotoxicological studies have shown adverse effects of microplastics on organisms. However, no risk assessment of microplastics has been performed specifically in freshwater so far. The aim of the present study was therefore to review all exposure and ecotoxicity data available for microplastics in freshwaters and to perform a preliminary probabilistic risk assessment. The exposure probability distribution was based on 391 concentrations measured in Asia, Europe, and North America. Because exposure data are mainly available in particle number-based metrics but results from hazard studies are mostly mass-based, the hazard results were converted into particle number concentrations. A statistical analysis of the hazard data showed that there was no significant influence of particle shape or type of polymer on the no-observed-effect concentration. The predicted-no-effect concentration (PNEC) was calculated as the fifth percentile of the probabilistic species sensitivity distribution, based on 53 values from 14 freshwater species, to have a mode of 7.4 × 10
Identifiants
pubmed: 30488983
doi: 10.1002/etc.4323
pmc: PMC6849787
doi:
Substances chimiques
Hazardous Substances
0
Plastics
0
Water Pollutants, Chemical
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
436-447Informations de copyright
© 2018 SETAC.
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