气候变化领域集成服务门户(CCPortal): Fate of particle-bound polycyclic aromatic hydrocarbons in the river-influenced continental margin of the northern Gulf of Mexico

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DOI	10.1016/j.marpolbul.2019.02.046
	Fate of particle-bound polycyclic aromatic hydrocarbons in the river-influenced continental margin of the northern Gulf of Mexico
	Adhikari P.L.; Maiti K.; Bam W.
发表日期	2019
ISSN	0025326X
起始页码	350
结束页码	362
卷号	141
英文摘要	This study utilizes suspended particles and seafloor sediments collected from the northern Gulf of Mexico (GOM) continental margin to study the fate, transport, residence times and accumulation rates of particle-bound polycyclic aromatic hydrocarbons (PAHs). Total particulate-PAHs and particulate organic carbon (POC) varied between 0.9 and 7.0 ng/L, and 4–131 μg/L, respectively. Particulate-PAHs were positively correlated with POC, while both particulate-PAHs and POC were negatively correlated with salinity (P-value < 0.05). These results show that the river-derived particle influx and associated POC are important vectors for transport and fate of particulate-PAHs in the river-dominated northern GOM continental ecosystems. The composition of underlying seafloor sediment-PAHs were not correlated to the water column particulate-PAHs, which is attributed to re-mineralization, sediment resuspension/redistribution and different timescales of comparison. The 210Pb-derived residence time of particles and associated particulate-PAHs in water column varied between 2 and 39 days. Residence times of particulate-PAHs were significantly correlated with seafloor sediment-PAHs accumulation rates, shorter water column residence times leading to higher PAHs accumulation rates. © 2019 Elsevier Ltd
英文关键词	Hydrophobic organic compounds (HOCs); Northern Gulf of Mexico (GOM); Particulate organic carbon (POC); Polycyclic aromatic hydrocarbons (PAHs); Residence times of particulate PAHs
语种	英语
scopus关键词	Aromatization; Hydrocarbons; Mineral oils; Organic carbon; Rivers; Suspended sediments; Hydrophobic organic compound; Northern Gulf of Mexico; Particulate organic carbon; Polycyclic aromatic hydrocarbons (PAHS); Residence time; Polycyclic aromatic hydrocarbons; anthracene; benzo[a]pyrene; benzo[b]fluoranthene; benzo[ghi]perylene; benz[a]anthracene; chrysene; dibenzothiophene derivative; dibenz[a,h]anthracene; fluoranthene; indeno[1,2,3 cd]pyrene; lead 210; naphthalene; organic carbon; particulate organic carbon; perylene; phenanthrene; polycyclic aromatic hydrocarbon; pyrene; unclassified drug; polycyclic aromatic hydrocarbon; sea water; continental margin; deep-sea sediment; environmental fate; organic carbon; organic compound; PAH; particulate organic matter; river; salinity; seafloor; water column; water quality; Article; carbon nitrogen ratio; chemical composition; concentration (parameter); controlled study; correlation analysis; Gulf of Mexico; higher molecular weight; lower molecular weight; middle molecular weight; mineralization; molecular weight; particle resuspension; remineralization; retention time; river; salinity; sediment; sedimentation rate; total organic carbon; traffic and transport; analysis; chemistry; ecosystem; environmental monitoring; Louisiana; particulate matter; procedures; Texas; water pollutant; Atlantic Ocean; Gulf of Mexico; Ecosystem; Environmental Monitoring; Geologic Sediments; Gulf of Mexico; Louisiana; Particulate Matter; Polycyclic Aromatic Hydrocarbons; Rivers; Seawater; Texas; Water Pollutants, Chemical
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150020
作者单位	Department of Marine and Ecological Sciences, Florida Gulf Coast University, Fort Myers, FL 33965, United States; College of the Coast and Environment, Louisiana State University, Baton Rouge, LA 70803, United States
推荐引用方式 GB/T 7714	Adhikari P.L.,Maiti K.,Bam W.. Fate of particle-bound polycyclic aromatic hydrocarbons in the river-influenced continental margin of the northern Gulf of Mexico[J],2019,141.
APA	Adhikari P.L.,Maiti K.,&Bam W..(2019).Fate of particle-bound polycyclic aromatic hydrocarbons in the river-influenced continental margin of the northern Gulf of Mexico.Marine Pollution Bulletin,141.
MLA	Adhikari P.L.,et al."Fate of particle-bound polycyclic aromatic hydrocarbons in the river-influenced continental margin of the northern Gulf of Mexico".Marine Pollution Bulletin 141(2019).