PMID- 33283500 OWN - NLM STAT- MEDLINE DCOM- 20210407 LR - 20210407 IS - 1520-5851 (Electronic) IS - 0013-936X (Linking) VI - 55 IP - 1 DP - 2021 Jan 5 TI - Spatial Distribution of Microplastics in Surficial Benthic Sediment of Lake Michigan and Lake Erie. PG - 373-384 LID - 10.1021/acs.est.0c06087 [doi] AB - The spatial distribution, concentration, particle size, and polymer compositions of microplastics in Lake Michigan and Lake Erie sediment were investigated. Fibers/lines were the most abundant of the five particle types characterized. Microplastic particles were observed in all samples with mean concentrations for particles greater than 0.355 mm of 65.2 p kg(-1) in Lake Michigan samples (n = 20) and 431 p kg(-1) in Lake Erie samples (n = 12). Additional analysis of particles with size 0.1250-0.3549 mm in Lake Erie resulted in a mean concentration of 631 p kg(-1). The majority of polymers in Lake Michigan samples were poly(ethylene terephthalate) (PET), high-density polyethylene (HDPE), and semisynthetic cellulose (S.S. Cellulose), and in Lake Erie samples were S.S. Cellulose, polypropylene (PP), and poly(vinyl chloride) (PVC). Polymer density estimates indicated that 85 and 74% of observed microplastic particles have a density greater than 1.1 g cm(-3) for Lake Michigan and Lake Erie, respectively. The current study provided a multidimensional dataset on the spatial distribution of microplastics in benthic sediment from Lake Michigan and Lake Erie and valuable information for assessment of the fate of microplastics in the Great Lakes. FAU - Lenaker, Peter L AU - Lenaker PL AUID- ORCID: 0000-0002-9469-6285 AD - Upper Midwest Water Science Center, U.S. Geological Survey, 8505 Research Way, Middleton, Wisconsin 53562, United States. FAU - Corsi, Steven R AU - Corsi SR AUID- ORCID: 0000-0003-0583-5536 AD - Upper Midwest Water Science Center, U.S. Geological Survey, 8505 Research Way, Middleton, Wisconsin 53562, United States. FAU - Mason, Sherri A AU - Mason SA AD - Department of Chemistry and Biochemistry, State University of New York at Fredonia, 280 Central Avenue, Science Complex 340, Fredonia, New York 14063, United States. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20201207 PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - 0 (Microplastics) RN - 0 (Plastics) RN - 0 (Water Pollutants, Chemical) SB - IM MH - Environmental Monitoring MH - Geologic Sediments MH - Lakes MH - Michigan MH - *Microplastics MH - Plastics MH - *Water Pollutants, Chemical/analysis EDAT- 2020/12/08 06:00 MHDA- 2021/04/10 06:00 CRDT- 2020/12/07 08:42 PHST- 2020/12/08 06:00 [pubmed] PHST- 2021/04/10 06:00 [medline] PHST- 2020/12/07 08:42 [entrez] AID - 10.1021/acs.est.0c06087 [doi] PST - ppublish SO - Environ Sci Technol. 2021 Jan 5;55(1):373-384. doi: 10.1021/acs.est.0c06087. Epub 2020 Dec 7.