作者
Naveenkumar Ashok Yaranal, Senthilmurugan Subbiah, Kaustubha Mohanty
发表日期
2021/2/1
期刊
Environmental Technology & Innovation
卷号
21
页码范围
101253
出版商
Elsevier
简介
Microplastics (MPs) present in edible salts may create a potential health hazard for humans. The occurrence of MPs in edible salts and their extraction procedure is limited. In this work, we have developed a facile and cost-effective protocol for the extraction and separation of MPs from the edible salt sample. The visual assessment was performed to identify the shape, size, number, and color of microplastic particles using light and fluorescence microscopy. The composition of the sample was analyzed by micro-Raman spectroscopy. A wide range of MPs were found: 1400∼ 1900 particles/kg in refined sea salt, 1900∼ 2300/kg in unrefined sea salts, and 200∼ 400/kg in rock salts. A relatively high number of MPs were found in sea salts rather than rock salts. Sheet type MPs with size 1∼ 4 μ m were observed in rock salts. The most common MPs were polyethylene (PE), polypropylene (PP), polyethylene terephthalate …
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