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Microplastic contamination in Indonesian consumable salts
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Researchers analyzed both traditionally produced and commercial branded sea salts from Indonesia and found microplastics in all samples tested. Traditionally produced salts contained the highest contamination levels, with up to 3,753 particles per kilogram, though branded salts also contained significant amounts. The study indicates that sea salt is a notable dietary source of microplastic exposure for consumers.
Microplastics were discovered in sea salts worldwide because they are directly supplied by seawater. This study explores the contamination of five traditionally produced and 10 branded sea salts with microplastics. The highest number of particles was found in the traditionally produced salt (563 items) an abundance of 106.67–3753.33 items/kg. Branded salts had abundance of 25.67 to 866.67 items/kg. There was no significant difference (p > 0.540) in the amount and abundance between these salts. The most predominant shape of microplastics was fiber. The particles sizes ranged from 17 μm to 4.86 mm. The predominant polymers were polyethylene terephthalate and polypropylene. The results indicate both traditionally produced and branded salts are contaminated with microplastics. It is necessary to implement technology to eliminate microplastics from abiotic sea salt to protect health and the environment.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.