Riverine microplastic pollution matters: A case study in the Zhangjiang River of Southeastern China

Pan, Zhong; Sun, Yinan; Liu, Qianlong; Lin, Chunye; Sun, Xiaoqi; He, Qing; Zhou, Kaiwen; Lin, Hui

doi:10.1016/j.marpolbul.2020.111516

Cited by 86 publications

(32 citation statements)

References 43 publications

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“…This is strengthened by the fact that only a few polymer types (PE, PP, and PS) were positively identified. Studies characterized by comparably low sample volumes report higher microplastic concentrations than this study (Pan et al 2020;Sekudewicz et al 2021). Extrapolating results based on few liters to one cubic meter may lead to overestimating the microplastic abundance due to a non-representative sample volume.…”

Section: Discussioncontrasting

confidence: 55%

“… Identification Mean/median min–max 63 μm-system (min–max) 20 μm-system (min–max) Mao et al 2020 CHN River Pump, filtration 50 64 H 2 O 2 (30%)/100 °C Nile red, Raman n.r. 7–700** 121–347 272–430 Pan et al 2020 CHN River Metal bucket, filtration 20 330 H 2 O 2 (30%) with 0.05 M FeSO 4 Visual, Raman 246/n.r. 50–275 22–64 28–44 Stanton et al 2020 GBR River Metal bucket, filtration 30 63 H 2 O 2 (30%) Visual, FTIR n.r.…”

Section: Discussionmentioning

confidence: 99%

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Microplastic concentrations, characteristics, and fluxes in water bodies of the Tollense catchment, Germany, with regard to different sampling systems

Tamminga

Hengstmann

Deuke

et al. 2021

Environ Sci Pollut Res

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The widespread presence of microplastics in multiple environmental compartments has largely been demonstrated. Assessing the ecological risk that microplastics pose is, at the present stage, hindered due to methodical differences. Moreover, different methods hamper meaningful comparisons between studies and data on microplastics <300 μm is scarce. Therefore, we focused on microplastics >20 μm in freshwater and sampling-related aspects in this concern. Sampling was conducted between 2018 and 2020 in the Tollense catchment in northeastern Germany and was carried out by in situ pump filtration. Two different sampling systems (cutoff sizes 20 μm and 63 μm) were applied to filter water volumes of 0.075–1.836 m3. Retained particles were analyzed by a combination of Nile red staining and micro-Raman spectroscopy. Thereby, we found microplastic concentrations between 123 and 1728 particles m−3 using the 63-μm cut-off size and between 1357 and 2146 particles m−3 using the 20-μm cut-off size. Local hydrodynamics (discharge and flow velocity) and land cover are likely influencing the observed microplastic concentrations and fluxes. The variability between both sampling systems cannot fully be explained by the different mesh sizes used. We argue that differentiation between a theoretical cut-off size (finest mesh) and a factual cut-off size (reliable quantification) can help to understand sampling related differences between studies.

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Section: Discussioncontrasting

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Microplastic concentrations, characteristics, and fluxes in water bodies of the Tollense catchment, Germany, with regard to different sampling systems

Tamminga

Hengstmann

Deuke

et al. 2021

Environ Sci Pollut Res

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“…Comparison of microplastic particle abundance in surface water across the globe with this study (Table 3) indicates a wide variation from as low as 0.73 particles/m 3 in Lake Victoria of Uganda (Egessa et al, 2020) to as high as 30, 800 particles/m 3 in the Winyah Bay of USA (Gray et al, 2018). Generally, the results in this study were relatively higher compared to other studies (Desforges et al, 2014;Zhao et al, 2014;Tsang et al, 2017;Simon-Sánchez et al, 2019;Egessa et al, 2020;Pan et al, 2020;Suresh et al, 2020). As for the Philippine setting, the abundance of microplastics in the surface waters of Meycauayan River and Tullahan River were at higher levels as compared to Tunasan River in Laguna, Lawaye River in Batangas, and creeks in Makati City (Argota et al, 2018;Espiritu et al, 2019;Lumongsod and Tanchuling, 2019).…”

Section: Abundance Of Microplasticscontrasting

confidence: 40%

Microplastics Occurrence in Surface Waters and Sediments in Five River Mouths of Manila Bay

Osorio

Tanchuling

Diola

2021

Front. Environ. Sci.

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Microplastics have been increasingly documented globally in numerous environmental compartments. However, little information exists in the Philippines despite the fact that the country is considered to be one of the largest contributors of plastics in oceans. This study, considered as one of the pioneering microplastic research, evaluated the abundance, distribution, and composition of microplastic pollution in the mouths of five rivers, namely Cañas, Meycauayan, Parañaque, Pasig and Tullahan, draining to Manila Bay. Surface water and sediments samples were collected, then passed through a stack of sieves with sizes from 2.36 mm at the top to 0.075 mm at the bottom. These samples were digested to remove organic matter, and salt solutions were added to allow the microplastics to float. Extracted particles were examined under a stereo microscope, and quantified and categorized into shape, size, color, and type. Results show that microplastics were present ubiquitously at all river mouths but with concentrations varying from 1,580 to 57,665 particles/m3 (surface water) and 386 to 1,357 particles/kg (dry sediment). Fragment was the most abundant shape, while white, blue, and transparent were the most prevalent colors. Fourier Transform Infrared Spectroscopy (FTIR) analysis revealed that polypropylene (PP), high and low-density polyethylene (high-density polyethylene and low-density polyethylene) and polystyrene were the main types of microplastics present in the river mouths.

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“…Many of these toxic pollutants can enter the aquatic food chain, which could accumulate in aquatic foods and transfer to humans. Pan et al [54] also reported an average of 246 items m −3 of microplastics in a Chinese river consisting of PP (polypropene) and PE (polythene) as the major polymers.…”

Section: Plastic Pollutionmentioning

confidence: 96%

Impacts of COVID-19 on the Aquatic Environment and Implications on Aquatic Food Production

et al. 2021

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The COVID-19 pandemic, caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), resulted in ecological changes of aquatic ecosystems, affected the aquatic food supply chain, and disrupted the socio-economy of global populations. Due to reduced human activities during the pandemic, the aquatic environment was reported to improve its water quality, wild fishery stocks, and biodiversity. However, the sudden surge of plastics and biomedical wastes during the COVID-19 pandemic masked the positive impacts and increased the risks of aquatic pollution, especially microplastics, pharmaceuticals, and disinfectants. The transmission of SARS-CoV-2 from wastewater treatment plants to natural water bodies could have serious impacts on the environment and human health, especially in developing countries with poor waste treatment facilities. The presence and persistence of SARS-CoV-2 in human excreta, wastewaters, and sludge and its transmission to aquatic ecosystems could have negative impacts on fisheries and aquaculture industries, which have direct implications on food safety and security. COVID-19 pandemic-related environmental pollution showed a high risk to aquatic food security and human health. This paper reviews the impacts of COVID-19, both positive and negative, and assesses the causes and consequences of anthropogenic activities that can be managed through effective regulation and management of eco-resources for the revival of biodiversity, ecosystem health, and sustainable aquatic food production.

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Riverine microplastic pollution matters: A case study in the Zhangjiang River of Southeastern China

Cited by 86 publications

References 43 publications

Microplastic concentrations, characteristics, and fluxes in water bodies of the Tollense catchment, Germany, with regard to different sampling systems

Microplastic concentrations, characteristics, and fluxes in water bodies of the Tollense catchment, Germany, with regard to different sampling systems

Microplastics Occurrence in Surface Waters and Sediments in Five River Mouths of Manila Bay

Impacts of COVID-19 on the Aquatic Environment and Implications on Aquatic Food Production

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