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 |
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| container_title | Marine pollution bulletin |
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| creator | Boitsov, S. Newman, B.K. Muiambo, H.F. Chaúque, E.F.C. Serigstad, B. Malauene, B.S. |
| description | 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 ( |
| doi_str_mv | 10.1016/j.marpolbul.2020.111952 |
| format | Article |
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[Display omitted]
•Over 100 sediment samples from northern Mozambique were studied for PAHs and metals.•Significant anthropogenic pollution only found at one site within Pemba harbor.•Coarse sediments at coastal and seamount locations have trace amounts of pollutants.•Background levels are found at most deep-sea locations with fine-grained sediments.•Elevated levels of barium and THC are found at some Rovuma Basin exploration wells.</description><identifier>ISSN: 0025-326X</identifier><identifier>EISSN: 1879-3363</identifier><identifier>DOI: 10.1016/j.marpolbul.2020.111952</identifier><identifier>PMID: 33461077</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>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</subject><ispartof>Marine pollution bulletin, 2021-02, Vol.163, p.111952, Article 111952</ispartof><rights>2020 Elsevier Ltd</rights><rights>Copyright © 2020 Elsevier Ltd. All rights reserved.</rights><rights>Copyright Elsevier BV Feb 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c399t-39353c4ff992f0c41c8f7ed22b23519a102d4d580ec8d68a9710bde9d5ac03963</citedby><cites>FETCH-LOGICAL-c399t-39353c4ff992f0c41c8f7ed22b23519a102d4d580ec8d68a9710bde9d5ac03963</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.marpolbul.2020.111952$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/33461077$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Boitsov, S.</creatorcontrib><creatorcontrib>Newman, B.K.</creatorcontrib><creatorcontrib>Muiambo, H.F.</creatorcontrib><creatorcontrib>Chaúque, E.F.C.</creatorcontrib><creatorcontrib>Serigstad, B.</creatorcontrib><creatorcontrib>Malauene, B.S.</creatorcontrib><title>Distribution and possible sources of polycyclic aromatic hydrocarbons (PAHs) and metals in marine surface sediments off northern Mozambique</title><title>Marine pollution bulletin</title><addtitle>Mar Pollut Bull</addtitle><description>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 (<63 μm), background levels of hydrocarbons and metals were found in most samples. We found anthropogenic contamination at one site in Pemba harbor. We observed no petroleum-related contamination, including the Palma area with numerous exploration wells. Elevated concentrations of barium and THC at some locations in this area are attributed to drilling activities but are not considered to be of environmental concern.
[Display omitted]
•Over 100 sediment samples from northern Mozambique were studied for PAHs and metals.•Significant anthropogenic pollution only found at one site within Pemba harbor.•Coarse sediments at coastal and seamount locations have trace amounts of pollutants.•Background levels are found at most deep-sea locations with fine-grained sediments.•Elevated levels of barium and THC are found at some Rovuma Basin exploration wells.</description><subject>Africa, Eastern</subject><subject>Anthropogenic factors</subject><subject>Aromatic compounds</subject><subject>Aromatic hydrocarbons</subject><subject>Arsenic</subject><subject>Background levels</subject><subject>Barium</subject><subject>Baseline studies</subject><subject>Contamination</subject><subject>Drilling</subject><subject>Environmental Monitoring</subject><subject>Environmental perception</subject><subject>Exploration</subject><subject>Gas production</subject><subject>Geologic Sediments</subject><subject>Grain size</subject><subject>Harbors</subject><subject>Heavy metals</subject><subject>Hydrocarbons</subject><subject>Indian Ocean Islands</subject><subject>Liquefied natural gas</subject><subject>LNG</subject><subject>Metals</subject><subject>Mozambique</subject><subject>Natural gas</subject><subject>Natural gas exploration</subject><subject>Northern Mozambique Channel</subject><subject>Oil and gas production</subject><subject>Oil exploration</subject><subject>Organic carbon</subject><subject>PAHs</subject><subject>Petroleum</subject><subject>Polycyclic aromatic hydrocarbons</subject><subject>Polycyclic Aromatic Hydrocarbons - analysis</subject><subject>Rovuma Basin</subject><subject>Sediment</subject><subject>Sediment composition</subject><subject>Sediment samples</subject><subject>Sediments</subject><subject>Total organic carbon</subject><subject>Water depth</subject><subject>Water Pollutants, Chemical - analysis</subject><issn>0025-326X</issn><issn>1879-3363</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFUctuFDEQtKKgZAn5hWApFzjMxo8Zz_i4Co8gBZEDSNwsjx-KVzP2YnuQll_gp-llQ66c2mpVVbuqEHpNyZoSKm6261nnXZrGZVozwmBLqezYCVrRoZcN54KfohUhrGs4E9_P0ctStoSQnvX0DJ1z3gpK-n6Ffr8LpeYwLjWkiHW0eJdKCePkcElLNq7g5GE37c3eTMFgndOsKzwe9zYno_OYYsFvHjZ35e1f_uyqngoOEcMXQwSdJXttYDobZhfrQdHjmHJ9dDniz-mXnsfwY3Gv0AsPVHf5NC_Qtw_vv97eNfdfPn663dw3hktZGy55x03rvZTME9NSM_jeWcZGxjsqNSXMtrYbiDODFYOWPSWjddJ22hAuBb9A10fdXU5wtlS1BasRTiomBOQoWCsB1R9RJkMi2Xm1ywEs7RUl6lCC2qrnEtShBHUsAZhXT_rLODv7zPuXOgA2R4ADlz-Dy6qY4KKBgLIzVdkU_nvkDzDdn1g</recordid><startdate>202102</startdate><enddate>202102</enddate><creator>Boitsov, S.</creator><creator>Newman, B.K.</creator><creator>Muiambo, H.F.</creator><creator>Chaúque, E.F.C.</creator><creator>Serigstad, B.</creator><creator>Malauene, B.S.</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7T7</scope><scope>7TN</scope><scope>7TV</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>M7N</scope><scope>P64</scope><scope>SOI</scope></search><sort><creationdate>202102</creationdate><title>Distribution and possible sources of polycyclic aromatic hydrocarbons (PAHs) and metals in marine surface sediments off northern Mozambique</title><author>Boitsov, S. ; Newman, B.K. ; Muiambo, H.F. ; Chaúque, E.F.C. ; Serigstad, B. ; Malauene, B.S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c399t-39353c4ff992f0c41c8f7ed22b23519a102d4d580ec8d68a9710bde9d5ac03963</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Africa, Eastern</topic><topic>Anthropogenic factors</topic><topic>Aromatic compounds</topic><topic>Aromatic hydrocarbons</topic><topic>Arsenic</topic><topic>Background levels</topic><topic>Barium</topic><topic>Baseline studies</topic><topic>Contamination</topic><topic>Drilling</topic><topic>Environmental Monitoring</topic><topic>Environmental perception</topic><topic>Exploration</topic><topic>Gas production</topic><topic>Geologic Sediments</topic><topic>Grain size</topic><topic>Harbors</topic><topic>Heavy metals</topic><topic>Hydrocarbons</topic><topic>Indian Ocean Islands</topic><topic>Liquefied natural gas</topic><topic>LNG</topic><topic>Metals</topic><topic>Mozambique</topic><topic>Natural gas</topic><topic>Natural gas exploration</topic><topic>Northern Mozambique Channel</topic><topic>Oil and gas production</topic><topic>Oil exploration</topic><topic>Organic carbon</topic><topic>PAHs</topic><topic>Petroleum</topic><topic>Polycyclic aromatic hydrocarbons</topic><topic>Polycyclic Aromatic Hydrocarbons - analysis</topic><topic>Rovuma Basin</topic><topic>Sediment</topic><topic>Sediment composition</topic><topic>Sediment samples</topic><topic>Sediments</topic><topic>Total organic carbon</topic><topic>Water depth</topic><topic>Water Pollutants, Chemical - analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Boitsov, S.</creatorcontrib><creatorcontrib>Newman, B.K.</creatorcontrib><creatorcontrib>Muiambo, H.F.</creatorcontrib><creatorcontrib>Chaúque, E.F.C.</creatorcontrib><creatorcontrib>Serigstad, B.</creatorcontrib><creatorcontrib>Malauene, B.S.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Oceanic Abstracts</collection><collection>Pollution Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Marine pollution bulletin</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Boitsov, S.</au><au>Newman, B.K.</au><au>Muiambo, H.F.</au><au>Chaúque, E.F.C.</au><au>Serigstad, B.</au><au>Malauene, B.S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Distribution and possible sources of polycyclic aromatic hydrocarbons (PAHs) and metals in marine surface sediments off northern Mozambique</atitle><jtitle>Marine pollution bulletin</jtitle><addtitle>Mar Pollut Bull</addtitle><date>2021-02</date><risdate>2021</risdate><volume>163</volume><spage>111952</spage><pages>111952-</pages><artnum>111952</artnum><issn>0025-326X</issn><eissn>1879-3363</eissn><abstract>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 (<63 μm), background levels of hydrocarbons and metals were found in most samples. We found anthropogenic contamination at one site in Pemba harbor. We observed no petroleum-related contamination, including the Palma area with numerous exploration wells. Elevated concentrations of barium and THC at some locations in this area are attributed to drilling activities but are not considered to be of environmental concern.
[Display omitted]
•Over 100 sediment samples from northern Mozambique were studied for PAHs and metals.•Significant anthropogenic pollution only found at one site within Pemba harbor.•Coarse sediments at coastal and seamount locations have trace amounts of pollutants.•Background levels are found at most deep-sea locations with fine-grained sediments.•Elevated levels of barium and THC are found at some Rovuma Basin exploration wells.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>33461077</pmid><doi>10.1016/j.marpolbul.2020.111952</doi></addata></record> |
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| ispartof | Marine pollution bulletin, 2021-02, Vol.163, p.111952, Article 111952 |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | 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 |
| title | Distribution and possible sources of polycyclic aromatic hydrocarbons (PAHs) and metals in marine surface sediments off northern Mozambique |
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