ArticleEnvironment & health (Washington, D.C.)2025
Microplastic Accumulation in Hong Kong's Marine Sediment: Spatial Pattern and Potential Sources.
Article in Environment & health (Washington, D.C.), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Biodegradation Mechanisms and Sustainable Governance of Marine Polypropylene Microplastics.Nanomaterials (Basel, Switzerland) · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Marine microplastic (MP) contamination has become a global issue due to its ubiquity, persistence, and potential ecological risks. Marine sediment is recognized as the final sink for marine microplastics and has therefore received increasing scientific attention. Currently, limited research has focused on microplastic pollution in the marine sediments of Hong Kong, China. In this study, we conducted a comprehensive investigation across Hong Kong to assess the abundance, polymer composition, and morphological characteristics of microplastics in marine sediments. Spatial pattern, risk assessment, and potential source analysis were further performed based on the field data. Our findings reveal that microplastics were unevenly distributed in Hong Kong's marine sediment with abundance ranging from 402.12 to 1507.96 items/kg (dry weight). The spatial pattern indicates higher microplastic accumulation in the western waters, with three hotspots at Deep Bay, Tai O, and Victoria Harbour. The dominant shapes of the observed microplastics were fibers and fragments. The major polymer types identified include polypropylene (PP), chlorinated polyethylene (CPE), and polyethylene (PE). The overall pollution load index (PLI) and pollution hazard index (PHI) were found to be at moderate levels. Notably, green PP was observed at 70% of sampling sites and accumulated in fishing farming areas and Victoria Harbor. It may be associated with regional intensive fishing and diverse anthropogenic activities. This research enhances our understanding of the health of Hong Kong's marine ecosystem and aids in the development of effective measures to mitigate marine microplastic pollution.
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