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61,005 resultsShowing papers similar to Occurrence and Sources of Polycyclic Aromatic Hydrocarbons and Factors Influencing Their Accumulation in Surface Sediment of a Deep-Sea Depression, Namely, the Tatar Trough (Tatar Strait, the Sea of Japan)
ClearPOLYCYCLIC AROMATIC HYDROCARBONS (PAHs) IN INDRAMAYU COASTAL, WEST JAVA: DISTRIBUTION, SOURCE, AND ECOLOGICAL RISK ASSESSMENT
Researchers assessed the distribution, sources, and ecological risk of polycyclic aromatic hydrocarbons in seawater and sediment samples from Indramayu Coast in West Java, Indonesia. Low molecular weight PAHs dominated, and source analysis pointed to both petrogenic and pyrogenic origins.
Contamination Levels and Accumulation Profiles of Polycyclic Aromatic Hydrocarbons (PAHs) in Surface Sediments from South Central Coast of Vietnam
Polycyclic aromatic hydrocarbons were quantified in surface sediments from the South Central Coast of Vietnam, characterizing sources, spatial distribution, and potential ecological risk from these hydrophobic persistent organic pollutants.
Distribution Characteristics and Pollution Sources Analysis of Polycyclic Aromatic Hydrocarbons and Phthalate Esters in the Seawater of Land-Based Outlets around Zhanjiang Bay in Spring
Researchers analyzed the distribution and potential sources of polycyclic aromatic hydrocarbons (PAHs) in environmental samples, using molecular diagnostic ratios and receptor modeling to distinguish combustion-derived from petroleum-derived PAH inputs. The study found that mixed petrogenic and pyrogenic sources contributed to contamination, with spatial patterns reflecting proximity to traffic corridors and industrial zones.
Voyaging of halogenated polycyclic aromatic hydrocarbons, an emerging group of pollutants, on micro-mesoplastics in the marine environment.
Researchers detected 61 of 75 target halogenated polycyclic aromatic hydrocarbons in micro-mesoplastics collected from coastal environments in Sri Lanka and Japan, finding that plastic surfaces accumulate these emerging pollutants at concentrations far exceeding surrounding sediments and that chlorinated PAHs dominated over brominated forms at both sites.
Extraction and determination of microplastics and associated PAHs in seawater and beach sediments from the northwestern part of the Caspian Sea
Researchers collected microplastics and beach sediments from the northwestern Caspian Sea and used GC-MS to characterize polycyclic aromatic hydrocarbons adsorbed on the MPs, finding PAH profiles consistent with petroleum combustion sources and documenting MP-PAH co-contamination in this landlocked sea.
Polycyclic aromatic hydrocarbons affiliated with microplastics in surface waters of Bohai and Huanghai Seas, China
Microplastics collected from surface waters of the Bohai and Huanghai Seas in China were found to carry polycyclic aromatic hydrocarbons (PAHs) at concentrations exceeding those in surrounding water, acting as concentrators of these carcinogenic compounds. The study documents that microplastics in heavily industrialized Chinese coastal seas accumulate PAHs that can be transferred to organisms that ingest them.
Concentration of polycyclic aromatic hydrocarbons (PAHs) in sediments from the Tampamachoco lagoon, Tuxpan River mouth, Gulf of Mexico
This paper is not about microplastics; it characterizes polycyclic aromatic hydrocarbon (PAH) contamination in sediments of a Mexican coastal lagoon, focusing on sources like fossil fuel combustion — with no substantive discussion of microplastic pollution.
Meta-Analysis of a New Georeferenced Database on Polycyclic Aromatic Hydrocarbons in Western and Central Mediterranean Seafood
This meta-analysis built a georeferenced database of polycyclic aromatic hydrocarbon (PAH) contamination in Western and Central Mediterranean seafood, finding that PAH levels vary significantly by species biology, habitat, and proximity to pollution sources. Filter-feeding organisms and those in coastal areas showed higher contamination levels. PAHs are among the hydrophobic organic pollutants that readily adsorb onto microplastic surfaces, making microplastics potential vectors for concentrating and transporting these carcinogens through marine food webs.
Characterization of Microplastics and Adsorbed/Dissolved Polycyclic Aromatic Hydrocarbons in the Biggest River System in Saitama and Tokyo, Japan
This study characterized microplastics and associated polycyclic aromatic hydrocarbons in the Arakawa River, the largest river system in Tokyo, finding an average of 2.21 pieces per cubic meter with polyethylene comprising 55.9 percent of polymer types. PAH concentrations showed seasonal variation, with higher levels observed in winter.
Microplastics contributed much less than organic matter to the burial of polycyclic aromatic hydrocarbons by sediments in the past decades: a case study from an urban lake
Researchers analyzed sediment cores from an urban Chinese lake to understand how microplastics and polycyclic aromatic hydrocarbons (PAHs) have accumulated over recent decades. They found that microplastics contributed relatively little to PAH burial compared to organic matter, but microplastic abundance increased steadily alongside industrialization.
Microplastics and polycyclic aromatic hydrocarbons (PAHs) in Xiamen coastal areas: Implications for anthropogenic impacts
Researchers measured both microplastic abundance and polycyclic aromatic hydrocarbon (PAH) concentrations in surface water and sediments of Xiamen coastal areas in southeast China. The study found that microplastic distribution correlated with urbanization and industrial activity patterns, suggesting that anthropogenic inputs drive co-contamination of coastal environments with both microplastics and chemical pollutants.
Occurrence, characteristics, and risk assessment of microplastics and polycyclic aromatic hydrocarbons associated with microplastics in surface water and sediments of the Konya Closed Basin, Turkey
For the first time, researchers characterized microplastic abundance, composition, and morphology in surface water and sediments of the inland Konya Closed Basin in Turkey, and assessed polycyclic aromatic hydrocarbon (PAH) contamination associated with microplastic surfaces. Both microplastics and PAHs were detected throughout the basin's freshwater resources, with microplastics acting as vectors concentrating these toxic organic compounds.
Atmospheric Deposition of Polycyclic Aromatic Hydrocarbons (PAHs) in the Coastal Urban Environment of Poland: Sources and Transport Patterns
Researchers measured polycyclic aromatic hydrocarbon deposition in fine particulate matter at a Baltic Sea coastal urban site in Poland across four seasons in 2019. Mean daily Sigma-13 PAH deposition flux was 229 nanograms per square meter per day, with a clear seasonal pattern peaking in winter due to residential coal burning and reduced photodegradation.
Profile distribution of polycyclic aromatic hydrocarbons in coastal soils of the Lower Don and Taganrog Bay, Russia
This study analyzed the distribution of polycyclic aromatic hydrocarbons (PAHs) — persistent toxic pollutants — through soil profiles in the coastal zone of the Lower Don River and Taganrog Bay in Russia. PAHs co-occur with microplastics in polluted coastal environments and pose overlapping risks to soil and aquatic ecosystems.
Seasonal variation, source identification, and health risk assessment of atmospheric polycyclic aromatic hydrocarbons (PAHs) in Ulsan, South Korea
Researchers monitored air pollution at a residential site in South Korea over three seasons and found that cancer-causing polycyclic aromatic hydrocarbons (PAHs) — byproducts of coal and oil burning — were highest in winter and partly blew in from China and North Korea, with some lesser-studied PAH types posing underappreciated health risks.
Sources and Distribution of Polycyclic Aromatic Hydrocarbons and Microplastics in Sediments from the Gulf of Trieste
Researchers characterized the distribution, concentration, and sources of polycyclic aromatic hydrocarbons and microplastics in marine sediments from the Gulf of Trieste using FTIR spectroscopy and density separation. PAH concentrations were highest near harbors and marinas and were of both pyrogenic and petrogenic origin, while microplastics peaked at 125 particles per 100 g dry weight in coastal areas with filaments and fragments of polyethylene and polypropylene (100-300 µm) dominating.
Sources, Occurrences, and Risks of Polycyclic Aromatic Hydro-Carbons (PAHs) in Bangladesh: A Review of Current Status
This review examines levels of polycyclic aromatic hydrocarbons (PAHs), toxic chemicals from burning fossil fuels, across water, soil, air, and seafood in Bangladesh, finding concentrations higher than in most other countries. Health assessments revealed both cancer and non-cancer risks to residents from eating contaminated seafood. While focused on PAHs rather than microplastics directly, the findings are relevant because microplastics can absorb and concentrate these same cancer-causing chemicals, potentially worsening human exposure.
Revisiting the analytical determination of PAHs in environmental samples: An update on recent advances
This review critically examines recent advances in sample preparation and instrumental methods for determining polycyclic aromatic hydrocarbons in environmental matrices including air, water, soil, and biota.
Persistent Halogenated Organic Pollutants in Deep-Water-Deposited Particulates from South China Sea
Researchers measured background levels of persistent halogenated organic pollutants (POPs) in deep-water-deposited particulates from the South China Sea, providing baseline data for a region with limited prior POP measurements. The study characterised concentrations of multiple compound classes and assessed spatial distribution patterns in offshore marine sediments.
Interdecadal Distribution of Persistent Organic Pollutants in Deep-Sea Chemosynthetic Bivalves
Researchers detected persistent organic pollutants including PCBs, PAHs, and organochlorine pesticides in deep-sea chemosynthetic bivalves collected over multiple decades, finding that POPs have penetrated even chemosynthetic ecosystems far from surface pollution sources.
Persistent organic pollutants are still present in surface marine sediments from the Seto Inland Sea, Japan
Researchers measured legacy persistent organic pollutants (PCBs, DDTs, HCHs, chlordanes) in surface sediments across Japan's Seto Inland Sea and found that historically contaminated deep sediments, resuspended by currents, continue to elevate surface concentrations despite decades of regulatory bans.
First assessment of Polycyclic Aromatic Hydrocarbons contamination and associated human health risk in Mullet (Liza aurata) from Tunisia: case of Bizerte and Ghar El Melh Lagoons
Researchers measured 15 priority polycyclic aromatic hydrocarbons (PAHs) in mullet (Liza aurata) muscle tissue from two Tunisian lagoons (Bizerte and Ghar El Melh) in the first assessment of PAH contamination in biota from these ecosystems. PAH levels were comparable to or lower than global fish specimens, with chemical profiles indicating both petrogenic and pyrolytic anthropogenic sources.
Tar patties are hotspots of hydrocarbon turnover and nitrogen fixation during a nearshore pollution event in the oligotrophic southeastern Mediterranean Sea
After an oil spill in the Mediterranean Sea, researchers found that tar patties washed ashore became hotspots of microbial activity, with communities of bacteria actively breaking down hydrocarbons. The study reveals how tar and plastic debris in marine environments interact with microbial communities, affecting local ocean chemistry.
Correlation between Polycyclic Aromatic Hydrocarbons in Wharf Roach (Ligia spp.) and Environmental Components of the Intertidal and Supralittoral Zone along the Japanese Coast
Researchers measured polycyclic aromatic hydrocarbon (PAH) concentrations in wharf roaches, mussels, and environmental media at 12 coastal sites in Japan, finding that wharf roaches accumulate PAHs primarily from food (drifting seaweed) and sediment, suggesting their utility as bioindicators of coastal PAH pollution.