Microplastics in stormwater runoff in a semiarid region, Tijuana, Mexico

Piñón-Colin, Teresita de Jesus; Rodríguez-Jiménez, Rubén; Rogel-Hernández, Eduardo; Alvarez-Andrade, Adriana; Wakida, Fernando T.

doi:10.1016/j.scitotenv.2019.135411

Cited by 180 publications

(73 citation statements)

References 41 publications

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“…This lower concentration was because of sedimentation of MPs for seven Microplastics in sewage and highway runoff days or more following rainfall events. Concentrations of MPs (66-191 pieces / L) similar to those of our highway runoff samples have been reported for stormwater runoff samples (Piñon-Colin et al, 2020). As MP concentrations in the highway runoff were orders of magnitude higher than those in secondary effluents, road runoff may represent an important source of MPs in urban aquatic environments.…”

Section: Mps In Highway Runoffsupporting

confidence: 86%

Microplastics in urban wastewater and estuarine water: Importance of street runoff

Sugiura

Takada

et al. 2021

EMCR

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We measured microplastics [(MPs): 10 μm -5 mm] in untreated and secondary-treated sewage, highway runoff, and estuarine water in Tokyo, Japan, during both dry and wet weather. MPs smaller than 200 μm were predominant, making up > 60% of the total number, in all our water samples. The abundance of the MPs was 420 pieces / L in the influent and 8.7 pieces / L in the secondary effluent, indicating a removal efficiency of 98% during primary + secondary treatment. Of the measured polymers-polyethylene (PE), polypropylene, polystyrene, polyethyleneterephthalate (PET), polyethylene polypropylene copolymer, polyethylene polypropylene diene (PEPD), polyethylene vinyl acetate, and acrylonitrile styrene, PET was predominant in the sewage influent (88%) and effluent (49%) and its form was mostly fibrous, indicating contribution from laundry effluents. Highway runoff water samples contained high concentrations of MP (81-292 pieces / L). The highway runoff contained more PE (25%-49%) and PEPD (13%-30%) than PET (3%-12%) indicating contribution from debris from automobile tire wear and plastics weathered on the ground. MP concentrations in estuarine water samples were lower (1.4 -2.3 pieces / L in dry weather), and PET was predominant, at 52%-77%, indicating a dominant contribution from sewage effluent. Following rainfall, MP concentrations in the estuarine water increased to 1.8-4.3 pieces / L, and PEPD, in particular, increased significantly, with a proportion of 43%-52%, indicating the contribution of MPs derived from street runoff. Although analyses of molecular markers of sewage, i.e., linear alkylbenzenes and coprostanol, confirmed the input of combined sewer overflow (CSO) to the estuarine water, we did not observe any significant increase in PET fiber MPs, indicating that there was no significant increase in the contribution of MPs from sewage including CSO to the estuarine waters after a rain event. This study highlights the importance of street runoff as a source of MPs in urban aquatic environments. Further investigation should be performed to quantitatively access the individual sources and processes.

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Section: Mps In Highway Runoffsupporting

confidence: 86%

Microplastics in urban wastewater and estuarine water: Importance of street runoff

Sugiura

Takada

et al. 2021

EMCR

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“…Several studies produced new data regarding the accumulation of MP fragments, fibers, and SBR particles in stormwater retention ponds and demonstrated that there were significant differences in the concentrations thereof between sampling sites (Liu et al, 2019;Olesen et al, 2019); for example, sediments in stormwater retention ponds act as MP sinks (Olesen et al, 2019). Piñon-Colin et al (2020) provided the first data on MPs in stormwater from a semi-arid region, and found concentrations similar to those from previous studies. Other recent studies focusing on tire and bitumen wear particles showed a significant concentration of these particles in stormwater (Järlskog et al, 2020).…”

Section: Introductionmentioning

confidence: 69%

Microplastics and microfibers in urban runoff from a suburban catchment of Greater Paris

Treilles

Gaspéri

Gallard

et al. 2021

Environmental Pollution

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“…Microplastics trapped within sediments may eventually permeate into groundwaters or aquifers before re‐joining the water cycle (O’Connor et al, 2019; Re, 2019), or may be freed by storm and rain events that may resuspend trapped MPs and introduce them back into aquatic systems (Bondelind et al, 2020; Ockelford et al, 2020; Piñon‐Colin et al, 2020). Since freshwater and climatic factors may vary seasonally, there can also be some temporal variation, with environmental MP loadings typically being higher during wet seasons (Campanale et al, 2019; Eo et al, 2019; Kurniawan & Imron, 2019; Weideman et al, 2019; Yuan et al, 2019).…”

Section: Occurrence Of Mps In Freshwater Fishes: From Sources To Egestionmentioning

confidence: 99%

Microplastics in freshwater fishes: Occurrence, impacts and future perspectives

et al. 2021

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Microplastics (MPs) are small, plastic particles of various shapes, sizes and polymers.Although well studied in marine systems, their roles and importance in freshwater environments remain uncertain. Nevertheless, the restricted ranges and variable traits of freshwater fishes result in their communities being important receptors and strong bioindicators of MP pollution. Here, the current knowledge on MPs in freshwater fishes is synthesized, along with the development of recommendations for future research and sample processing. MPs are commonly ingested and passively taken up by numerous freshwater fishes, with ingestion patterns often related to individual traits (e.g. body size, trophic level) and environmental factors (e.g. local urbanization, habitat features). Controlled MP exposure studies highlight various effects on fish physiology, biochemistry and behaviour that are often complex, unpredictable, species-specific and nonlinear in respect of dose-response relationships.Egestion is typically rapid and effective, although particles of a particular shape and/ or size may remain, or translocate across the intestinal wall to other organs via the blood. Regarding future studies, there is a need to understand the interactions of MP pollution with other anthropogenic stressors (e.g. warming, eutrophication), with a concomitant requirement to increase the complexity of studies to enable impact assessment at population, community and ecosystem levels, and to determine whether there are consequences for processes, such as parasite transmission, where MPs could vector parasites or increase infection susceptibility. This knowledge will determine the extent to which MP pollution can be considered a major anthropogenic stressor of freshwaters in this era of global environmental change.

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Microplastics in stormwater runoff in a semiarid region, Tijuana, Mexico

Cited by 180 publications

References 41 publications

Microplastics in urban wastewater and estuarine water: Importance of street runoff

Microplastics in urban wastewater and estuarine water: Importance of street runoff

Microplastics and microfibers in urban runoff from a suburban catchment of Greater Paris

Microplastics in freshwater fishes: Occurrence, impacts and future perspectives

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