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Microplastics in Freshwater Environment: A Case Study of River Gomti, Lucknow, India

2024
Amit K. Mishra, Jaswant Singh, Pratyush P. Mishra

Summary

Researchers investigated microplastic occurrence in water and sediment samples from the Gomti River in Lucknow, India, using standard extraction methods and microscopic identification and quantification. The study documents the types, shapes, and concentrations of microplastics present in this urban freshwater system and its implications as a transport pathway to the ocean.

Polymers
Study Type Environmental

Abstract Microplastics (MPs), present worldwide from the poles to the oceans, have become a key environmental concern, disturbed different ecosystems across the globe. Freshwater are major channels that transport microplastics from land to the oceans. Present study shows, occurrence of MPs in the Gomti River, Lucknow. Water and sediment were sampled from Gomti river and extraction process was carried out by standard methods. Microplastics were identified and quantified by using a stereo zoom microscope and Fourier Transform Infrared Spectroscopy. A total of 2489 particles were identified from analysed samples. Microplastic abundances in water samples ranged from 4.20 to 8.38 items L− 1, whereas in the sediment, ranged from 276 to 672 items kg− 1 d.w. The analysis showed that fibers dominated in both environmental matrices, accounting for 50.49% in water and 60.42% in sediment, respectively. Dominance of polyethylene and polypropylene was confirmed by FTIR analysis. This is the first study of the Gomti river at Lucknow. The findings will provide baseline data for future monitoring and assessment.

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