Microplastic pollution in Vembanad Lake, Kerala, India: The first report of microplastics in lake and estuarine sediments in India

Shini, Sruthy; Ramasamy, E. V.

doi:10.1016/j.envpol.2016.12.038

Cited by 455 publications

(96 citation statements)

References 57 publications

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“…Microplastics (including synthetic fibres) \ 5 mm in size are of interest due to the likelihood of ingestion by freshwater organisms and, because they have large specific surface area, their potential for adsorption and leaching of associated contaminants and additives (Lobelle and Cunliffe 2011;Sanchez et al 2014;Faure et al 2015;Näkki et al 2017). Pellets and 'microbeads' specifically manufactured as microplastic forms (primary microplastics) may be found in freshwaters subject to large inputs of industrial drainage or effluent (Castañeda et al 2014;Lechner et al 2014;Corcoran et al 2015;Driedger et al 2015;Baldwin et al 2016;Horton et al 2017a;Horton and Dixon 2018), although secondary microplastics (derived from the breakdown of larger plastic items) dominate in freshwater sediments subject to more diffuse plastic waste sources (Free et al 2014;Driedger et al 2015;Faure et al 2015;Zhang et al 2016;Blettler et al 2017;Matsuguma et al 2017;Sruthy and Ramasamy 2017;Imhof et al 2018).…”

Section: Introductionmentioning

confidence: 99%

A temporal sediment record of microplastics in an urban lake, London, UK

et al. 2019

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A radionuclide-dated ( 210 Pb and 137 Cs) sediment core collected from Hampstead Pond No. 1, a North London lake, was used to provide novel data on the historical accumulation of microplastic waste in the urban environment. Microplastics were extracted from sediments by sieving and dense-liquid separation. Fibres of anthropogenic origin dominated the assemblage. Microplastics were first identified by microscopy before Raman spectroscopy of selected particles was used to determine the composition of synthetic polymers and dyes. Polystyrene microplastic particles were identified, in addition to synthetic fibres of polyacrylonitrile, polyvinyl chloride and fibres containing synthetic dyes. Concentrations of total microplastics in the sediment samples ranged from detection level to 539 particles per kilogram of dried sediment. Proliferation of microplastics is evident in the core from the late 1950s to the present. Relatively low numbers of particles were found in older sediments, comparable to laboratory blanks, highlighting the difficulty of extending a plastic chronostratigraphy back to the early twentieth century. This study shows that, with optimisation, routine extraction of microplastics from radionuclide-dated lake sediments can add an important temporal perspective to our understanding of microplastics in aquatic systems.

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Section: Introductionmentioning

confidence: 99%

A temporal sediment record of microplastics in an urban lake, London, UK

et al. 2019

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“…Polyethylene chains have high resistance to the biodegradation due to their hydrocarbon backbone which are inert and do not have functional groups such as carbonyl or hydroxyl groups . Waste disposal of the packaging materials which are made from the polyethylene leads to many problems and pollution of the environment . Some strategies are used to overcome these problems.…”

Section: Introductionmentioning

confidence: 99%

Photodegradation of low‐density polyethylene with prooxidant and photocatalyst

Gharehdashli

Mortazavi

Rashidi

2020

J of Applied Polymer Sci

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Low‐density polyethylene (LDPE) composite films with trisilver phosphate (Ag3PO4) and cadmium selenide (CdSe) particles as photocatalysts and manganese stearate as prooxidant were prepared. The film samples were irradiated under UV and visible light and their photodegradation were evaluated using Fourier‐transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, and differential scanning calorimetry. The carbonyl index of the photocatalyst containing samples was very higher than the pure irradiated LDPE and even prooxidant containing film. The morphologies of the irradiated composite films were completely changed and had many cavities and cracks. The thermal stability of the composites was very lower than the pure polyethylene. However the crystallinity of the LDPE films with photocatalysts was enhanced contrarily the LDPE film with manganese stearate. Generally the results showed that the combination of the prooxidant with photocatalyst have synergistic effect on the photodegradation of the LDPE and can be used to accelerate the degradation of the polyethylene films.

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“…Accumulation of small pieces of plastic (<5 mm), also known as microplastics, in aquatic habitats including marine (Browne et al, 2007;Galloway & Lewis, 2017), freshwater (Eriksen et al, 2013;Lechner et al, 2014;Peng et al, 2018;Su et al, 2016) and estuarine (Sruthy and Ramasamy, 2017) environments has received increasing attention in the recent years and concerns are arising regarding their potential adverse effects (e.g., Thompson et al, 2004;Eerkes-Medrano et al, 2015). In light of these discoveries, plastic pollution has been declared to be one of the most critical environmental issues of our time by the United Nations Environment Programme (UNEP, 2016).…”

Section: Introductionmentioning

confidence: 99%

Reproductive toxicity of primary and secondary microplastics to three cladocerans during chronic exposure

Jaikumar

Brun

Vijver

et al. 2019

Environmental Pollution

170

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Microplastic pollution in Vembanad Lake, Kerala, India: The first report of microplastics in lake and estuarine sediments in India

Cited by 455 publications

References 57 publications

A temporal sediment record of microplastics in an urban lake, London, UK

A temporal sediment record of microplastics in an urban lake, London, UK

Photodegradation of low‐density polyethylene with prooxidant and photocatalyst

Reproductive toxicity of primary and secondary microplastics to three cladocerans during chronic exposure

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