PMID- 34953262 OWN - NLM STAT- MEDLINE DCOM- 20220128 LR - 20220128 IS - 1879-3363 (Electronic) IS - 0025-326X (Linking) VI - 174 DP - 2022 Jan TI - High levels of microplastics in commercial salt and industrial salterns in Sri Lanka. PG - 113239 LID - S0025-326X(21)01273-X [pii] LID - 10.1016/j.marpolbul.2021.113239 [doi] AB - This study provides the first analysis and quantification of MPs in salt products in Sri Lanka. Commercial table salt brands, rock salt, lab-grade NaCl and raw salt from three salterns were analysed using microscopy and Fourier transform infrared spectroscopy. All salt samples were contaminated with MPs: in commercial salts products it ranged from 11 to 193 items/kg, rock salts had 64 items/kg and lab grade NaCl had 253 +/- 8.9 items/kg. The MP levels in salterns varied significantly: Hambantota 3345.7 +/- 311.4 items/kg, Puttalam 272.3 +/- 10.6 items/kg, and Elephant Pass 36.3 +/- 4.5 items/kg. Predominantly, MPs were presented as fibres, followed by fragments. Of the 23 polymer types identified; low-density polyethylene (LDPE; 17%), resin dispersion (15%) and high-density polyethylene (HDPE; 12%) were notable. This study provides the first comparison of MPs in raw salt and commercial salt. This information is important to trace the pollutant sources and then to take steps to eliminate MPs in food products consumed. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Kapukotuwa, R W M G K AU - Kapukotuwa RWMGK AD - Postgraduate Institute of Science, University of Peradeniya, Peradeniya 20400, Sri Lanka. FAU - Jayasena, N AU - Jayasena N AD - Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine & Animal Science, University of Peradeniya, Peradeniya 20400, Sri Lanka. FAU - Weerakoon, K C AU - Weerakoon KC AD - Department of Zoology, Faculty of Natural Sciences, The Open University of Sri Lanka, Nugegoda, Sri Lanka. FAU - Abayasekara, C L AU - Abayasekara CL AD - Department of Botany, Faculty of Science, University of Peradeniya, Peradeniya 20400, Sri Lanka. FAU - Rajakaruna, R S AU - Rajakaruna RS AD - Postgraduate Institute of Science, University of Peradeniya, Peradeniya 20400, Sri Lanka; Department of Zoology, Faculty of Science, University of Peradeniya, Peradeniya 20400, Sri Lanka. Electronic address: rupikar@pdn.ac.lk. LA - eng PT - Journal Article DEP - 20211222 PL - England TA - Mar Pollut Bull JT - Marine pollution bulletin JID - 0260231 RN - 0 (Microplastics) RN - 0 (Plastics) RN - 0 (Sodium Chloride, Dietary) RN - 0 (Water Pollutants, Chemical) RN - 451W47IQ8X (Sodium Chloride) SB - IM MH - Environmental Monitoring MH - *Microplastics MH - Plastics MH - Sodium Chloride MH - Sodium Chloride, Dietary MH - Sri Lanka MH - *Water Pollutants, Chemical/analysis OTO - NOTNLM OT - Microplastics OT - Plastic pollution OT - Polymer type OT - Salterns OT - Table salt EDAT- 2021/12/26 06:00 MHDA- 2022/01/29 06:00 CRDT- 2021/12/25 20:07 PHST- 2021/07/13 00:00 [received] PHST- 2021/12/01 00:00 [revised] PHST- 2021/12/03 00:00 [accepted] PHST- 2021/12/26 06:00 [pubmed] PHST- 2022/01/29 06:00 [medline] PHST- 2021/12/25 20:07 [entrez] AID - S0025-326X(21)01273-X [pii] AID - 10.1016/j.marpolbul.2021.113239 [doi] PST - ppublish SO - Mar Pollut Bull. 2022 Jan;174:113239. doi: 10.1016/j.marpolbul.2021.113239. Epub 2021 Dec 22.