Microplastic contamination of table salts from Taiwan, including a global review SCIE SCOPUS

Cited 59 time in WEB OF SCIENCE Cited 75 time in Scopus
Title
Microplastic contamination of table salts from Taiwan, including a global review
Author(s)
Lee, Hyemi; Kunz, Alexander; Shim, Won Joon; Walther, Bruno A.
KIOST Author(s)
Shim, Won Joon(심원준)
Alternative Author(s)
심원준
Publication Year
2019-07-12
Abstract
Plastic pollution is a rapidly worsening environmental problem, especially in oceanic habitats. Environmental pollution with microplastic particles is also causing food consumed by humans to be increasingly polluted, including table salts. Therefore, we present the first study which focuses only on table salt products purchased in Taiwan which we examined for the presence of microplastics. We used Fourier transform infrared spectroscopy to identify the polymer type of each particle. Within 4.4 kg of salt, we detected 43 microplastic particles which averages to 9.77 microplastic particles/kg. The identified polymer types were, in descending abundance, polypropylene, polyethylene, polystyrene, polyester, polyetherimide, polyethylene terephthalate, and polyoxymethylene. We combined our novel results with those of previous studies to provide the first global review of microplastic contamination of table salts. We found that 94% of salt products tested worldwide contained microplastics, with 3 out of 27 polymer types (polyethylene terephthalate, polypropylene, polyethylene) accounting for the majority of all particles. Averaging over seven separate studies, table salts contain a mean of 140.2 microplastic particles/kg. With a mean annual salt consumption of similar to 3.75 kg/year, humans therefore annually ingest several hundred microplastic particles from salt alone.
ISSN
2045-2322
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/576
DOI
10.1038/s41598-019-46417-z
Bibliographic Citation
SCIENTIFIC REPORTS, v.9, 2019
Publisher
NATURE PUBLISHING GROUP
Subject
MARINE-ENVIRONMENT; PLASTIC DEBRIS; HUMAN HEALTH; POLLUTION; IDENTIFICATION; ADDITIVES; INGESTION; BEACHES; MICRO; FISH
Type
Article
Language
English
Document Type
Article
Publisher
NATURE PUBLISHING GROUP
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