Characterization of plastic debris from surface waters of the eastern Arabian Sea–Indian Ocean
Autor: | Sudeep Naidu, M. V. Ramana Murthy, Gupta Gvm, L. Mawii, G. Anitha, P. Mishra, Bhavani Narayanaswamy, V. Ranga Rao, V. Anil Kumar |
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Rok vydání: | 2021 |
Předmět: |
0106 biological sciences
Microplastics 010604 marine biology & hydrobiology 010501 environmental sciences Aquatic Science Plankton Oceanography 01 natural sciences Pollution Debris Fishing line Indian ocean Abundance (ecology) Environmental science Marine ecosystem Plastic pollution Indian Ocean Plastics Ecosystem Water Pollutants Chemical Environmental Monitoring 0105 earth and related environmental sciences |
Zdroj: | Marine Pollution Bulletin. 169:112468 |
ISSN: | 0025-326X |
Popis: | The quantity of floating plastic debris (FPD) is continuously being increased in the oceans. To assess their size, structure, and composition along the eastern Arabian Sea (EAS), FPD samples were collected by using a surface plankton net. The microplastic size fraction (0.5–5 mm) was the most prevalent accounting for >50% of the total, followed by mesoplastics (5–25 mm; ~40%) and macroplastics (>25 mm; ~10%). The collected FPDs were categorized into five different types and eight colours. Attenuated Total Reflectance-Fourier Transform Infrared Spectrometry (ATR-FTIR) analysis of the plastics revealed that polypropylene, polyethylene, and nylon were the most dominant polymers, and these comprised mostly of fibre/fishing line. The abundance of FPD in the EAS (0.013 ± 0.012 no.s/m3) was found to be very low compared to elsewhere. The prevalent microplastics presence in the oceans might have occurred mainly by the degradation of larger items. It increases bioavailability, and hence, is a risk to marine ecosystems. |
Databáze: | OpenAIRE |
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