Distribution and possible sources of polycyclic aromatic hydrocarbons (PAHs) and metals in marine surface sediments off northern Mozambique

Liquid natural gas (LNG) exploration has started off the coast of northern Mozambique, in the Rovuma Basin, East Africa. In advance of gas production, we collected in 2018 over 100 samples of surface sediments from 40 locations in the pristine and exploration areas at water depths of 5–2000 m. We ha...

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Veröffentlicht in:	Marine pollution bulletin 2021-02, Vol.163, p.111952, Article 111952
Hauptverfasser:	Boitsov, S., Newman, B.K., Muiambo, H.F., Chaúque, E.F.C., Serigstad, B., Malauene, B.S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Africa, Eastern Anthropogenic factors Aromatic compounds Aromatic hydrocarbons Arsenic Background levels Barium Baseline studies Contamination Drilling Environmental Monitoring Environmental perception Exploration Gas production Geologic Sediments Grain size Harbors Heavy metals Hydrocarbons Indian Ocean Islands Liquefied natural gas LNG Metals Mozambique Natural gas Natural gas exploration Northern Mozambique Channel Oil and gas production Oil exploration Organic carbon PAHs Petroleum Polycyclic aromatic hydrocarbons Polycyclic Aromatic Hydrocarbons - analysis Rovuma Basin Sediment Sediment composition Sediment samples Sediments Total organic carbon Water depth Water Pollutants, Chemical - analysis
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Zusammenfassung:	Liquid natural gas (LNG) exploration has started off the coast of northern Mozambique, in the Rovuma Basin, East Africa. In advance of gas production, we collected in 2018 over 100 samples of surface sediments from 40 locations in the pristine and exploration areas at water depths of 5–2000 m. We have determined the levels of hydrocarbons (total hydrocarbon contents (THC) and 49 individual PAHs), heavy metals, arsenic, grain size and total organic carbon. While sediment composition varied strongly from coarse sediment to high mud contents (
ISSN:	0025-326X 1879-3363
DOI:	10.1016/j.marpolbul.2020.111952