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Evaluation of microplastics in beach sediments along the coast of Dubai, UAE
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Researchers evaluated microplastic contamination in beach sediments from 16 Dubai coastal sites, finding an average concentration of 59.71 items/kg dry sediment with blue fibrous particles and polyethylene strings as the dominant types. XRF analysis of 480 microplastics identified 13 heavy metals on particle surfaces, including 5 priority pollutants, highlighting the dual contamination risk posed by plastics in this arid coastal environment.
Microplastic contamination in beach sediments along coast of Dubai is un-documented. In this study, microplastic contamination in beach sediments collected from the wrack lines of 16 beaches in Dubai was evaluated. Five samples were collected from each beach along a 100 m stretch using a 0.5 m by 0.5 m, quadrant. The number, color, and shape of microplastics were documented. The polymer types of large fibers and strings were identified through FT-IR analysis. 480 microplastics from each of the 16 beaches were selected to detect heavy metals using XRF analysis. The results showed that the average weight of microplastic is 0.33 mg per gram of dry sediment (or 953 mg·m) and the number of microplastic is 59.71 items per kg of dry sediment (or 165 items·m). Blue and fibrous microplastics were dominant. Polyethylene strings and fibers were abundantly found. 13 heavy metals were identified of which five are priority pollutants.
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