We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Characteristics of expanded polystyrene microplastics on island beaches in the Pearl River Estuary: abundance, size, surface texture and their metals-carrying capacity
AI summary Read the abstract
Researchers surveyed expanded polystyrene microplastic contamination on five island beaches in the Pearl River Estuary, finding abundances ranging from 328 to over 82,000 particles per square meter. The study found that beach-collected EPS microplastics carried significantly higher heavy metal concentrations than new EPS products, suggesting these particles accumulate metals from surrounding sediments and seawater over time.
While expanded polystyrene (EPS) microplastics have been widely recognized as one of the most important components of plastic litter in the intertidal zones of the global ocean, our understanding of their environmental fate on island beaches is insufficient. In this study, we intended to reveal that the latest EPS microplastic pollution status on 5 island beaches in the Pearl River Estuary, China, by comprehensively assessing the abundance, distribution, size, surface texture and carrying capacity of heavy metals (Cd, As, Cr, Ni, Cu, Pb, Mn, Fe, Al). High level of EPS microplastic abundance ranged from 328 to 82,276 particles m was found, with the highest abundance at Guishan Island and the lowest at Dong'ao Island. Spatial distribution of EPS microplastic abundance was significantly different among different islands. EPS microplastics in the size range of 1-2 mm were the most abundant. The content of heavy metals in EPS microplastics collected on the beaches was greater than that in the new EPS products. The average concentrations of heavy metals in EPS microplastics from 5 islands are Cd (0.27 ± 0.19 μg g), As (5.50 ± 3.84 μg g), Cr (14.9 ± 8.25 μg g), Cu (15.0 ± 7.66 μg g), Ni (17.2 ± 17.6 μg g), Pb (24.8 ± 7.39 μg g), Mn (730 ± 797 μg g), Fe (8340 ± 4760 μg g), and Al (9624 ± 6187 μg g), respectively. The correlation between heavy metals in EPS microplastics and sediments was better than that between heavy metals in EPS microplastics and seawater. The study results indicated that EPS microplastics could act as a carrier for the transport of heavy metals, which might pose a threat to biological and human health.
More Papers Like This
Association of metals with expanded polystyrene in the marine environment
AI summary Read the abstract
Researchers analyzed metals associated with beached expanded polystyrene fragments from marine environments and found that EPS accumulates heavy metals on its surfaces, potentially concentrating toxic contaminants and delivering them to organisms that ingest EPS pieces.
Hong Kong at the Pearl River Estuary: A hotspot of microplastic pollution
AI summary Read the abstract
Beach surveys around Hong Kong found microplastic densities averaging over 5,500 items per square meter, higher than many other reported coastal areas, with expanded polystyrene dominating. The high contamination reflects Hong Kong's position at the heavily polluted Pearl River Estuary and underscores the regional plastic pollution problem.
Spatial variation of floatable plastic debris and microplastics in the Pearl River Estuary, South China
AI summary Read the abstract
Researchers quantified and characterized microplastics and large plastic debris in surface water from the Inner Lingding Bay of the Pearl River Estuary, finding both types present at all sites with mean abundances of 2.376 and 0.110 items per square meter respectively, predominantly as fibers from multiple sources.
Heavy metals contamination of sedimentary microplastics in Hong Kong
AI summary Read the abstract
Researchers conducted the first study of heavy metal contamination on microplastics found on sandy beaches in Hong Kong. They found that polyethylene, polypropylene, and polystyrene were the most common plastic types, with iron, zinc, and manganese being the most concentrated metals. Samples from western Hong Kong sites near the Pearl River had significantly higher metal concentrations, suggesting the river is a major source of heavy metals on microplastics.
Spatial Distribution, Key Influencing Factors, and Ecological Risk of Microplastics in Pearl River Estuary Water and Sediments
AI summary Read the abstract
Researchers mapped the distribution of microplastics in the water and sediments of the Pearl River Estuary in China and identified the key factors driving contamination levels. Fibers were the most common microplastic type found, and human activity along the coast strongly influenced pollution patterns. The study also assessed ecological risks and provides a framework for understanding how microplastics accumulate in heavily populated estuarine environments.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.