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A new study has found direct evidence that underwater avalanches (turbidity currents) carry large amounts of microplastics into the deep sea.
Researchers studied the Whittard Canyon near Ireland using underwater monitoring and sediment sampling.
They discovered that even canyons not connected to rivers can transport pollutants like microplastics to depths over 3 km.
These powerful underwater currents also move nutrients, helping support deep-sea ecosystems and biodiversity.
Microplastics
They are defined as plastics less than five millimetres in diameter.
It can be harmful to our ocean and aquatic life.
Under the influence of solar UV radiation, wind, currents, and other natural factors, plastic fragments into small particles, termed microplastics (particles smaller than 5 mm) or nanoplastics (particles smaller than 100 nm).
Classification:
Primary Microplastics: They are tiny particles designed for commercial use and microfibers shed from clothing and other textiles.
E.g., microbeads found in personal care products, plastic pellets, and plastic fibres.
Secondary Microplastics: They are formed from the breakdown of larger plastics, such as water bottles.
Exposure to environmental factors, primarily solar radiation and ocean waves, is the cause of this breakdown.
Applications of Microplastics:
Medical and Pharmaceutical Uses: Used in targeted drug delivery due to the capacity to absorb and release chemicals effectively.
Industrial Applications: Used in air-blasting technology for cleaning machinery and in the production of synthetic textiles.
Cosmetics and Personal Care Products: Used as exfoliating agents in facial scrubs, toothpaste, and other personal care products.
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