Abstract
Plastics having number of applications all over the world and its great usage lead to rapid increase in plastic production and disposal. Around 400 million tons of plastics produced per year worldwide, out of this only 18% of plastics recycled that has led to its poor disposal practice because discharged plastics overcome in the environment for several 100 years either in their original or fragmented form. The fragmentation of particles are caused by several factors like wind currents, wave currents, abrasions etc., leading to various sizes which are classified as macro- (≥25mm), meso-(<25mm–5mm) micro- (<5mm–1μm) and further Nano-plastics (<1μm).This study manly focusses on quantification of Micro plastics which can be identified in different shapes such as spherical beads (pellets), films, fragments, foam, fibers etc., and are generally composed of polyethylene (0.91-0.97 g/mL), polypropylene (0.94 g/mL), polyvinyl chloride (1.4 g/mL), and polystyrene (1.05 g/mL). For this analysis of micro plastic existence, the water samples have been collected from two locations such as Adyar and Cooum estuaries. 10 samples have been collected each location and carried over to the laboratory for FTIR- Spectrometer (Fourier Transform Infrared Spectrometer) analysis along with the protocol laid by the NOAA. Typical infrared spectrum covers between 2.5 µm to 25 µm (4000 to 400 ).
Highlights
In these last few years, global annual demand for plastics has gradually growing
Micro plastics occur in different shapes like beads, which are considered as primary pollutants as they are highly resistant to deformation because of their size, thickness and properties
Besides these there are minute size micro plastics confined between 5mm to 0.3mm both visible and not visible to human eye that are present in samples that are analyzed by laboratory methods
Summary
Plastics are well designed for a number of uses as a flexible medium weight solid and translucent materials [1] Their deposition in surface waters is increased significant use of plastics resulting in contaminated waters and oceans creating chemical imbalances in aquatic environment..This topic has become increasingly interested in environmental research, with the study of evidences addressing accumulation of plastic litters and its Revised Manuscript Received on June 22, 2020. Durable and are chemically resistant these properties of plastics add on and make them non-biodegradable Besides these, their low expense, outstanding properties of oxygen / moisture inhibitors, bio stiffness and light weight render them outstanding packaging material. Plastics are considered to be the best packaging materials as they are highly resistant to chemical attacks, durable and flexible, often clear and inert to oxygen and moisture entry. Micro plastics occur in different shapes like beads, which are considered as primary pollutants as they are highly resistant to deformation because of their size, thickness and properties
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