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Environmental Science and Pollution Research

, Volume 25, Issue 30, pp 30122–30131 | Cite as

Contamination of Indian sea salts with microplastics and a potential prevention strategy

  • Chandan Krishna Seth
  • Amritanshu Shriwastav
Research Article

Abstract

This study reports the contamination of Indian sea salts with different microplastic particles, as a consequence of using contaminated sea water. Samples from all eight brands of investigated sea salts were found contaminated, and concentrations of these particles ranged from 103 ± 39 to 56 ± 49 particles kg−1 of salt. Both fibers and fragments were observed with large variation in size. Eighty percent of the extracted fibers and the fragments were smaller than 2000 μm and 500 μm respectively. Extracted particles were mostly polyesters, polyethylene terephthalate (PET), polyamide, polyethylene, and polystyrene. Their total mass concentration was also estimated as 63.76 μg kg−1 of salt. These results are significant, since India is a leading producer and exporter of sea salts. A simple sand filtration of artificially contaminated sea water could effectively (> 85% removal by weight and > 90% removal by number) remove these microplastics and has the potential for preventing the transfer of microplastics into the salt from contaminated sea waters.

Keywords

Microplastics Sea salts Marine pollution Sand filtration Health effects 

Notes

Acknowledgements

Sophisticated Analytical Instrument Facility (SAIF) at IIT Bombay, established with the support of Department of Science and Technology, Government of India, is acknowledged for providing access to the FTIR facility.

Funding information

This work was partially supported by the IIT Bombay Seed Grant (16IRCCSG018).

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Centre for Environmental Science and EngineeringIndian Institute of Technology BombayMumbaiIndia

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