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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Detection Methods Environmental Sources Human Health Effects Policy & Risk Remediation Sign in to save

Small-Size Microplastics in Urban Stormwater Runoff are Efficiently Trapped in a Bioretention Cell

ACS ES&T Water 2024 9 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Rachid Dris Kelsey Smyth, Kelsey Smyth, Kelsey Smyth, Kelsey Smyth, Johnny Gaspéri, Kelsey Smyth, Kelsey Smyth, Kelsey Smyth, Johnny Gaspéri, Kelsey Smyth, Johnny Gaspéri, Rachid Dris Rachid Dris Johnny Gaspéri, Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Shuyao Tan, Shuyao Tan, Shuyao Tan, Rachid Dris Shuyao Tan, Shuyao Tan, Shuyao Tan, Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Kelsey Smyth, Kelsey Smyth, Kelsey Smyth, Kelsey Smyth, Johnny Gaspéri, Kelsey Smyth, Kelsey Smyth, Kelsey Smyth, Kelsey Smyth, Rachid Dris Kelsey Smyth, Rachid Dris Johnny Gaspéri, Johnny Gaspéri, Shuyao Tan, Johnny Gaspéri, Elodie Passeport, Shuyao Tan, Shuyao Tan, Johnny Gaspéri, Johnny Gaspéri, Shuyao Tan, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Shuyao Tan, Johnny Gaspéri, Johnny Gaspéri, Shuyao Tan, Shuyao Tan, Johnny Gaspéri, Rachid Dris Johnny Gaspéri, Shuyao Tan, Rachid Dris Johnny Gaspéri, Rachid Dris Johnny Gaspéri, Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Johnny Gaspéri, Jennifer Drake, Rachid Dris Rachid Dris Rachid Dris Rachid Dris Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris Johnny Gaspéri, Jennifer Drake, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris Rachid Dris Rachid Dris Jennifer Drake, Rachid Dris Jennifer Drake, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris Elodie Passeport, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Tim Van Seters, Tim Van Seters, Shuyao Tan, Shuyao Tan, Tim Van Seters, Tim Van Seters, Shuyao Tan, Shuyao Tan, Rachid Dris Jennifer Drake, Elodie Passeport, Johnny Gaspéri, Johnny Gaspéri, Elodie Passeport, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Elodie Passeport, Elodie Passeport, Elodie Passeport, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris Rachid Dris Johnny Gaspéri, Jennifer Drake, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris Johnny Gaspéri, Johnny Gaspéri, Tim Van Seters, Elodie Passeport, Elodie Passeport, Johnny Gaspéri, Tim Van Seters, Rachid Dris Johnny Gaspéri, Jennifer Drake, Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Johnny Gaspéri, Rachid Dris Rachid Dris Johnny Gaspéri, Rachid Dris Jennifer Drake, Jennifer Drake, Jennifer Drake, Johnny Gaspéri, Jennifer Drake, Johnny Gaspéri, Elodie Passeport, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Elodie Passeport, Elodie Passeport, Johnny Gaspéri, Johnny Gaspéri, Elodie Passeport, Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Rachid Dris Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Shuyao Tan, Shuyao Tan, Rachid Dris Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris Johnny Gaspéri, Kelsey Smyth, Johnny Gaspéri, Johnny Gaspéri, Elodie Passeport, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Jennifer Drake, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Elodie Passeport, Johnny Gaspéri, Elodie Passeport, Rachid Dris Rachid Dris Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Johnny Gaspéri, Rachid Dris Johnny Gaspéri, Johnny Gaspéri, Rachid Dris

Summary

Researchers conducted a two-year field study showing that bioretention cells, a type of green stormwater infrastructure, effectively captured microplastics as small as 25 micrometers from urban runoff. The system retained over 80 percent of small microplastics, with fibers and fragments being the most commonly trapped types. The findings suggest that existing urban green infrastructure can serve double duty as a practical tool for reducing microplastic pollution in waterways.

Polymers
PE PP

As they decrease in size, microplastics pose increasing environmental and health risks. Previous work showed that bioretention cells, a type of low impact development (LID), are effective at removing microplastics greater than approximately 100 μm from urban stormwater runoff. This two-year field study investigates whether bioretention cells provide similar benefits by removing microplastics as small as 25 μm in size from urban stormwater. The use of automated μFTIR mapping allowed for the analysis of smaller microplastics, less than 100 μm, which, until recently, have rarely been analyzed in stormwater due to the difficulty of their identification. A 71% concentration decrease was observed in the bioretention cell. In this 25–100 μm size range, the median microplastic concentrations were 227 microplastics/L in the stormwater (i.e., the bioretention inlet) and 66.5 microplastics/L at the outlet. The most prevalent synthetic polymers were polypropylene and polyethylene. Rubber and fibers were not analyzed due to method limitations. No correlations between hydrologic characteristics and microplastic quantities were observed, highlighting that other factors are likely involved in the fate and transport of microplastics in stormwater, like weather-induced particle fragmentation. These results demonstrate that this filtration-based LID system continues to provide effective microplastic removal down to 25 μm.

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