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61,005 resultsShowing papers similar to Occurrence and spatial distribution of phthalate esters in sediments of the Bohai and Yellow seas
ClearOccurrences of organophosphorus esters and phthalates in the microplastics from the coastal beaches in north China
Researchers investigated organophosphorus esters and phthalates associated with microplastics collected from 28 coastal beaches across the Bohai and Yellow Sea in northern China, finding that these plastic-associated chemical pollutants may transfer to organisms via plastic ingestion.
Distribution and risks of microplastics and phthalate esters in the transition from inland river systems to estuarine and nearshore regions of the Yellow Sea, China
Researchers mapped the distribution of microplastics and phthalate chemicals across rivers, estuaries, and nearshore waters of the Yellow Sea in China. They found that pollution levels were highest in upstream urban areas and decreased toward more rural downstream zones, with fibers and polyethylene being the most common types. The study highlights how inland human activity drives microplastic and chemical contamination that eventually reaches the ocean.
Characteristics and Health Risks of Phthalate Ester Contamination in Soil and Plants in Coastal Areas of South China
Researchers investigated phthalate ester contamination across 37 sites in coastal South China, finding widespread contamination in both soil and plants with concentrations posing potential health risks, particularly from the plasticizers DEHP and DBP.
Risk Assessment of Phthalate Esters in Baiyangdian Lake and Typical Rivers in China
Researchers assessed phthalate ester contamination in Baiyangdian Lake and surrounding rivers in China, finding widespread distribution of these endocrine-disrupting chemicals at concentrations that pose ecological risks to aquatic organisms, particularly during warmer seasons.
Contaminant occurrence, distribution and ecological risk assessment of phthalate esters in the Persian Gulf
This study measured phthalate esters, chemicals commonly used as plastic softeners, in water samples from the Persian Gulf and assessed their ecological risk. Several phthalate compounds were detected at levels that pose potential risks to aquatic organisms. These chemicals are classified as endocrine disruptors and possible carcinogens, and since they leach from microplastics in water, their presence highlights how plastic pollution can introduce harmful chemicals into marine environments and the seafood supply.
Phthalate esters in the Largest River of Asia: An exploration as indicators of microplastics
Researchers conducted the first investigation of phthalate ester (PAE) pollution throughout Yangtze River sediments, finding 14 of 16 PAE types at all sites with concentrations related to urbanization and industrial activity, and explored their potential as chemical proxy indicators for microplastic pollution patterns. Strong correlations between PAEs and microplastic distribution suggest that PAEs could serve as soluble chemical tracers for microplastic contamination in large river systems.
PAEs and PBDEs in plastic fragments and wetland sediments in Yangtze estuary
Researchers quantified phthalates (PAEs) and polybrominated diphenyl ethers (PBDEs) in plastic fragments and wetland sediments from the Yangtze Estuary, finding ΣPAE concentrations of 26.8-4241.8 µg/g and ΣPBDE concentrations up to 250.1 µg/g in plastic samples, confirming that plastic debris acts as a reservoir for these hazardous additives in estuarine environments.
Contamination of Phthalic Acid Esters (PAEs) in Surface Sediment Samples Collected from Rao Cai River in Ha Tinh, Vietnam
Researchers optimized a solid phase extraction combined with GC-MS method to quantify nine phthalic acid esters (PAEs) in surface sediment samples from the Rao Cai River in Ha Tinh, Vietnam, finding total PAE concentrations ranging from 72.4 to 1390 ng/g dry weight. Di-(2-ethylhexyl) phthalate (DEHP) was the dominant compound detected across all samples, and risk quotient analysis indicated that diisobutyl phthalate posed a medium ecological risk to fish.
Phthalate esters and plastic debris abundance in the Red Sea and Sharm Obhur and their ecological risk level.
Researchers measured plastic debris and phthalate ester concentrations in seawater from the Red Sea, finding both were present and correlated with each other. Phthalates are chemical plasticizers that leach from plastic debris, raising concerns about combined exposure to plastic particles and their associated chemical pollutants in marine environments.
Assessing the potential risk and relationship between microplastics and phthalates in surface seawater of a heavily human-impacted metropolitan bay in northern China
A survey of Jiaozhou Bay in northern China found a strong correlation between microplastic abundance and concentrations of phthalate plasticizers in surface seawater, with both higher near river inputs and sewage treatment plants. The ecological risk from phthalates was moderate for one compound (di-n-butyl phthalate), and overall microplastic pollution levels were also moderate.
Occurrence and distribution of microplastics-sorbed phthalic acid esters (PAEs) in coastal psammitic sediments of tropical Atlantic Ocean, Gulf of Guinea
Researchers investigated microplastic pollution and phthalate ester (PAE) contamination in littoral sediments at five beaches along the Gulf of Guinea, finding 3424 microplastic particles per square meter dominated by PET fragments. Ecological risk assessment indicated that DEHP and dibutyl phthalate sorbed to microplastics pose medium to high biological risks to marine organisms in the region.
Distribution Dynamics of Phthalate Esters in Surface Water and Sediment of the Middle-Lower Hanjiang River, China
Researchers investigated the distribution dynamics of six phthalate ester congeners in surface water and sediment of the middle-lower Hanjiang River in China, assessing the migration, transformation, and potential human health risks of these endocrine-disrupting chemicals.
Study of the Spatiotemporal Variations, Source Determination, and Potential Ecological Risk of Organophosphate Esters in Typical Coastal Tourist Resorts in China
This study analyzed the spatial distribution and ecological risk of twelve organophosphate ester (OPE) flame retardants in water and sediment from nineteen coastal tourist resorts along China's Shandong Peninsula. OPEs are plastic additives and flame retardants that leach from plastic products into the environment, and their co-occurrence with microplastics in coastal waters represents a combined chemical pollution concern.
Microplastic pollution in sediments from the Bohai Sea and the Yellow Sea, China
Researchers sampled sediments from the Bohai Sea and Yellow Sea and found widespread microplastic contamination, with fibers and fragments as the dominant forms, and higher concentrations near river mouths and urban coastlines.
Distribution of phthalates in Marseille Bay (NW Mediterranean Sea)
Researchers measured six phthalate plasticizer compounds in seawater from Marseille Bay over a full year, finding total concentrations of 130–1,330 ng/L dominated by DEHP, with elevated bottom-water levels in summer suggesting that resuspension of phthalate-laden sediment or plastic debris drives seasonal contamination patterns.
Presence of Phthalate Esters Used as Common Plasticisers in Maltese Shoreline Sand
Researchers conducted the first study of phthalate plasticisers DBP and DEHP in Maltese shoreline sand, analyzing 75 samples from busy and secluded beaches via UPLC-MS/MS. Concentrations varied significantly by beach, with anthropogenic activities and beach topography driving uneven spatial distributions of both compounds.
Phthalate diester occurrence in marine feed and food (Mediterranean Sea)
Researchers detected phthalate diesters in Mediterranean Sea zooplankton, fish, and bivalves, with DEHP found in all zooplankton samples and 30% of fish, demonstrating how microplastics transport these endocrine-disrupting chemicals through marine food webs.
Concentrations and distribution of phthalate esters in the seamount area of the Tropical Western Pacific Ocean
Researchers investigated phthalate ester (PAE) concentrations in seawater at the M2 seamount in the Tropical Western Pacific Ocean, finding total PAE concentrations ranging from 12.13 to 60.69 ng/L and dominated by DBP, DEHP, and DiBP. The spatial distribution of PAEs was shaped by current-seamount interactions, with lower concentrations above the seamount summit.
Fate, source and mass budget of sedimentary microplastics in the Bohai Sea and the Yellow Sea
The fate, sources, and mass budget of microplastics in sediments of the Bohai Sea and Yellow Sea were investigated, finding average abundances of 137 and 119 items/kg respectively and identifying land-based river inputs and fisheries activities as dominant sources.
Assessment of plastic pollution in the Bohai Sea: Abundance, distribution, morphological characteristics and chemical components
Plastic pollution in the surface water and sediments of China's Bohai Sea was assessed, finding widespread contamination with fragments and pellets, and identifying shipping, river discharge, and coastal aquaculture as major sources.
Microplastics in offshore sediment in the Yellow Sea and East China Sea, China
Microplastics were found in offshore sediment samples from the Southern Yellow Sea and East China Sea, with concentrations and polymer types reflecting both local and distant anthropogenic sources. The study expands the known distribution of seafloor microplastic contamination in China's coastal seas and identifies fishing activities as a likely contributor.
A case study of distribution and characteristics of microplastics in surface water and sediments of the seas around Shenzhen, southern coastal area of China
This study characterized microplastics in surface water and sediments at 14 sites in the seas around Shenzhen, China, finding concentrations of 3.8 to 7.8 particles per liter in water and 26,000 to 100,000 particles per kilogram in sediments. Fibers and films dominated, polyethylene was the main polymer, and ecological risk was assessed as high, with microplastic abundance correlating with urbanization rate.
Organophosphate Triesters and Their Transformation Products in Sediments of Mangrove Wetlands in the Beibu Gulf, South China Sea
Researchers measured organophosphate ester pollutants and their breakdown products in sediments from three mangrove wetlands in China's Beibu Gulf for the first time. They found these contaminants were present at all sampling sites, with mangrove wetlands retaining higher concentrations than adjacent areas. The study indicates that mangrove sediments serve as sinks for these emerging pollutants, which are commonly associated with plastic products and flame retardants.
Can Phthalates Be Considered as Microplastic Tracers in the Mediterranean Marine Environment?
This study assessed whether phthalate plasticizers could serve as tracers for microplastic pollution in Mediterranean coastal waters, examining their occurrence, distribution, and interactions with the marine environment in one of the world's plastic pollution hotspots.