We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Concentrations and distribution of phthalate esters in the seamount area of the Tropical Western Pacific Ocean
Summary
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.
A total of 14 phthalate esters (PAEs) were analysed by gas chromatography-mass spectrometry (GC-MS) to better understand its occurrence and distribution in seawater samples of M2 seamount in the Tropical Western Pacific Ocean (TWPO). The concentrations of ΣPAEs in the seawater ranged from 12.13 ng L to 60.69 ng L (av. 28.86 ng L), dominated by dibutyl phthalate (DBP), di(2‑ethylhexyl) phthalate (DEHP) and diisobutyl phthalate (DiBP). ΣPAEs concentrations in the southwest of the seamount were lower than those in the northeast, with the minima appearing above the seamount summit. Current-seamount interaction was reckoned to be the principal driving factors in the distribution of PAEs. DEHP posed a medium risk in seawater, suggesting that marine plastic pollution has become an urgent environmental issue that calls for more attention and actions. Microplastics leaching and atmospheric deposition might be the potential sources of PAEs.
Sign in to start a discussion.
More Papers Like This
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.
Occurrence and spatial distribution of phthalate esters in sediments of the Bohai and Yellow seas
Six phthalate esters were measured in sediments of the Bohai and Yellow seas, with sum concentrations averaging 9.1 ng/g and DEHP as the dominant compound (median 3.77 ng/g), with highest concentrations in coastal areas near industrial activity. The study provides baseline data on phthalate distribution in two important semi-enclosed Chinese seas and identifies associated risks to marine organisms.
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.
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.
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.