Ecological indicators and source diagnostic ratios of aliphatic and polyaromatic hydrocarbons in marine sediments of Qatar
<p dir="ltr">The marine ecosystems surrounding oil and gas production sites are particularly vulnerable to ecological harm that may be affected by its operations. In this study, we examined the composition, contaminant sources, and the potential ecological risk of aliphatic hydrocarb...
محفوظ في:
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| مؤلفون آخرون: | , , |
| منشور في: |
2023
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إضافة وسم
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| _version_ | 1864513549528727552 |
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| author | Maryam A. Abdulla (16303297) |
| author2 | Azenith B. Castillo (16303300) Christopher Collins (5929154) Tom Sizmur (2838560) |
| author2_role | author author author |
| author_facet | Maryam A. Abdulla (16303297) Azenith B. Castillo (16303300) Christopher Collins (5929154) Tom Sizmur (2838560) |
| author_role | author |
| dc.creator.none.fl_str_mv | Maryam A. Abdulla (16303297) Azenith B. Castillo (16303300) Christopher Collins (5929154) Tom Sizmur (2838560) |
| dc.date.none.fl_str_mv | 2023-12-01T00:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.rsma.2023.103042 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Ecological_indicators_and_source_diagnostic_ratios_of_aliphatic_and_polyaromatic_hydrocarbons_in_marine_sediments_of_Qatar/23498273 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Biological sciences Ecology Environmental sciences Environmental biotechnology Pollution and contamination Petroleum hydrocarbons Aliphatic hydrocarbons Polycyclic aromatic hydrocarbons Diagnostic ratio Ecological assessment |
| dc.title.none.fl_str_mv | Ecological indicators and source diagnostic ratios of aliphatic and polyaromatic hydrocarbons in marine sediments of Qatar |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">The marine ecosystems surrounding oil and gas production sites are particularly vulnerable to ecological harm that may be affected by its operations. In this study, we examined the composition, contaminant sources, and the potential ecological risk of aliphatic hydrocarbons (AH) and polyaromatic hydrocarbons (PAH) in the marine sediments along the western coast of Qatar. The ∑AHs concentration ranged from <0.10 to 246 ng⋅g<sup>−1</sup> (site SD2) while the ∑PAH concentration ranged from <0.10 to 44 ng⋅g<sup>−1</sup> (site SD10). Pollution concentration profile was site specific where AH and PAH concentrations were relatively higher within close proximity to the oil and gas production. TOC appeared to be positively correlated with PAH and therefore a good indicator for PAH but not for AH. Low molecular weight even-carbon numbered alkanes (<i>n</i>-C10-18) were more abundant than the higher molecular weight (<i>n</i>-C20-34) AHs. The∑16PAHs compositional analysis mean concentrations were composed of 2-ring (6%), 3-ring (18%), 4-ring (48%), 5-ring (28%), and 6-ring (0.14%), respectively. Fluoranthene obtained the highest concentration of 11 ng⋅g<sup>−1</sup> (site SD10). Diagnostic ratios and hydrocarbon parameters suggested mixed sources of petrogenic, pyrolytic, and biomass except for vehicular traffic. The overall results for AH and PAH indicated low pollution based on pollution criteria and were below the threshold limit set by the National Oceanic and Atmospheric Administration (NOAA) and the Canadian Sediment Quality Guidelines (CSQG). This suggests low probability of a negative toxic effect caused by these contaminants however, continuous long term-monitoring is needed to ensure these pollutants do not exceed the current levels.</p><h2>Other Information</h2><p dir="ltr">Published in: Regional Studies in Marine Science<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="http://dx.doi.org/10.1016/j.rsma.2023.103042" target="_blank">http://dx.doi.org/10.1016/j.rsma.2023.103042</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_57bc2978a96c2ea8c7079ef1d566fc3b |
| identifier_str_mv | 10.1016/j.rsma.2023.103042 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/23498273 |
| publishDate | 2023 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Ecological indicators and source diagnostic ratios of aliphatic and polyaromatic hydrocarbons in marine sediments of QatarMaryam A. Abdulla (16303297)Azenith B. Castillo (16303300)Christopher Collins (5929154)Tom Sizmur (2838560)Biological sciencesEcologyEnvironmental sciencesEnvironmental biotechnologyPollution and contaminationPetroleum hydrocarbonsAliphatic hydrocarbonsPolycyclic aromatic hydrocarbonsDiagnostic ratioEcological assessment<p dir="ltr">The marine ecosystems surrounding oil and gas production sites are particularly vulnerable to ecological harm that may be affected by its operations. In this study, we examined the composition, contaminant sources, and the potential ecological risk of aliphatic hydrocarbons (AH) and polyaromatic hydrocarbons (PAH) in the marine sediments along the western coast of Qatar. The ∑AHs concentration ranged from <0.10 to 246 ng⋅g<sup>−1</sup> (site SD2) while the ∑PAH concentration ranged from <0.10 to 44 ng⋅g<sup>−1</sup> (site SD10). Pollution concentration profile was site specific where AH and PAH concentrations were relatively higher within close proximity to the oil and gas production. TOC appeared to be positively correlated with PAH and therefore a good indicator for PAH but not for AH. Low molecular weight even-carbon numbered alkanes (<i>n</i>-C10-18) were more abundant than the higher molecular weight (<i>n</i>-C20-34) AHs. The∑16PAHs compositional analysis mean concentrations were composed of 2-ring (6%), 3-ring (18%), 4-ring (48%), 5-ring (28%), and 6-ring (0.14%), respectively. Fluoranthene obtained the highest concentration of 11 ng⋅g<sup>−1</sup> (site SD10). Diagnostic ratios and hydrocarbon parameters suggested mixed sources of petrogenic, pyrolytic, and biomass except for vehicular traffic. The overall results for AH and PAH indicated low pollution based on pollution criteria and were below the threshold limit set by the National Oceanic and Atmospheric Administration (NOAA) and the Canadian Sediment Quality Guidelines (CSQG). This suggests low probability of a negative toxic effect caused by these contaminants however, continuous long term-monitoring is needed to ensure these pollutants do not exceed the current levels.</p><h2>Other Information</h2><p dir="ltr">Published in: Regional Studies in Marine Science<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="http://dx.doi.org/10.1016/j.rsma.2023.103042" target="_blank">http://dx.doi.org/10.1016/j.rsma.2023.103042</a></p>2023-12-01T00:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.rsma.2023.103042https://figshare.com/articles/journal_contribution/Ecological_indicators_and_source_diagnostic_ratios_of_aliphatic_and_polyaromatic_hydrocarbons_in_marine_sediments_of_Qatar/23498273CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/234982732023-12-01T00:00:00Z |
| spellingShingle | Ecological indicators and source diagnostic ratios of aliphatic and polyaromatic hydrocarbons in marine sediments of Qatar Maryam A. Abdulla (16303297) Biological sciences Ecology Environmental sciences Environmental biotechnology Pollution and contamination Petroleum hydrocarbons Aliphatic hydrocarbons Polycyclic aromatic hydrocarbons Diagnostic ratio Ecological assessment |
| status_str | publishedVersion |
| title | Ecological indicators and source diagnostic ratios of aliphatic and polyaromatic hydrocarbons in marine sediments of Qatar |
| title_full | Ecological indicators and source diagnostic ratios of aliphatic and polyaromatic hydrocarbons in marine sediments of Qatar |
| title_fullStr | Ecological indicators and source diagnostic ratios of aliphatic and polyaromatic hydrocarbons in marine sediments of Qatar |
| title_full_unstemmed | Ecological indicators and source diagnostic ratios of aliphatic and polyaromatic hydrocarbons in marine sediments of Qatar |
| title_short | Ecological indicators and source diagnostic ratios of aliphatic and polyaromatic hydrocarbons in marine sediments of Qatar |
| title_sort | Ecological indicators and source diagnostic ratios of aliphatic and polyaromatic hydrocarbons in marine sediments of Qatar |
| topic | Biological sciences Ecology Environmental sciences Environmental biotechnology Pollution and contamination Petroleum hydrocarbons Aliphatic hydrocarbons Polycyclic aromatic hydrocarbons Diagnostic ratio Ecological assessment |