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Liu X, Hong X, Song H, Zhang T, Chen K, Chu J. Exploring source-specific ecological risks of PAHs near oil platforms in the Yellow River Estuary, Bohai Sea. MARINE POLLUTION BULLETIN 2024; 207:116870. [PMID: 39173476 DOI: 10.1016/j.marpolbul.2024.116870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/23/2024] [Accepted: 08/16/2024] [Indexed: 08/24/2024]
Abstract
The Yellow River Estuary (YRE) is one of highly remarkable regions profoundly impacted by human activities, with numerous oil platforms dispersed throughout. In this area, offshore oil exploitation may pose significant ecological risks. To comprehensively evaluate the quantitative impacts of oil field exploitation on the marine coastal ecosystem, this study investigated the occurrence, sources, and ecological risks associated with 16 polycyclic aromatic hydrocarbons (PAHs) in seawater and sediment near oil platforms in the YRE. We found that 1) The concentrations of PAHs decreased from the surface seawater to sediments; 2) The ecological risk level of PAHs in seawater exceeded that in sediments; 3) terrestrial sources (combustion), rather than offshore oil drilling activities, significantly influenced regional ecological risks through processes of atmospheric deposition and surface runoff. These findings provide essential data for future estuarine research efforts while supporting mitigation measures aimed at addressing marine environmental pollution related to oil production activities.
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Affiliation(s)
- Xin Liu
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China; First Institute of Oceanography, MNR, Qingdao 266061, PR China
| | - Xuguang Hong
- First Institute of Oceanography, MNR, Qingdao 266061, PR China
| | - Hongjun Song
- First Institute of Oceanography, MNR, Qingdao 266061, PR China
| | - Tong Zhang
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China; First Institute of Oceanography, MNR, Qingdao 266061, PR China
| | - Kan Chen
- First Institute of Oceanography, MNR, Qingdao 266061, PR China.
| | - Jiansong Chu
- College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China.
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2
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Barathan M, Ng SL, Lokanathan Y, Ng MH, Law JX. Plant Defense Mechanisms against Polycyclic Aromatic Hydrocarbon Contamination: Insights into the Role of Extracellular Vesicles. TOXICS 2024; 12:653. [PMID: 39330582 PMCID: PMC11436043 DOI: 10.3390/toxics12090653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2024] [Revised: 08/22/2024] [Accepted: 09/04/2024] [Indexed: 09/28/2024]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are persistent organic pollutants that pose significant environmental and health risks. These compounds originate from both natural phenomena, such as volcanic activity and wildfires, and anthropogenic sources, including vehicular emissions, industrial processes, and fossil fuel combustion. Their classification as carcinogenic, mutagenic, and teratogenic substances link them to various cancers and health disorders. PAHs are categorized into low-molecular-weight (LMW) and high-molecular-weight (HMW) groups, with HMW PAHs exhibiting greater resistance to degradation and a tendency to accumulate in sediments and biological tissues. Soil serves as a primary reservoir for PAHs, particularly in areas of high emissions, creating substantial risks through ingestion, dermal contact, and inhalation. Coastal and aquatic ecosystems are especially vulnerable due to concentrated human activities, with PAH persistence disrupting microbial communities, inhibiting plant growth, and altering ecosystem functions, potentially leading to biodiversity loss. In plants, PAH contamination manifests as a form of abiotic stress, inducing oxidative stress, cellular damage, and growth inhibition. Plants respond by activating antioxidant defenses and stress-related pathways. A notable aspect of plant defense mechanisms involves plant-derived extracellular vesicles (PDEVs), which are membrane-bound nanoparticles released by plant cells. These PDEVs play a crucial role in enhancing plant resistance to PAHs by facilitating intercellular communication and coordinating defense responses. The interaction between PAHs and PDEVs, while not fully elucidated, suggests a complex interplay of cellular defense mechanisms. PDEVs may contribute to PAH detoxification through pollutant sequestration or by delivering enzymes capable of PAH degradation. Studying PDEVs provides valuable insights into plant stress resilience mechanisms and offers potential new strategies for mitigating PAH-induced stress in plants and ecosystems.
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Affiliation(s)
- Muttiah Barathan
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia
| | - Sook Luan Ng
- Department of Craniofacial Diagnostics and Biosciences, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur 50300, Malaysia
| | - Yogeswaran Lokanathan
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia
| | - Min Hwei Ng
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia
| | - Jia Xian Law
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia
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3
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Qian Y, Zheng H, Ouyang X, Lin Y, Cai M. Distinct anthropogenic signatures: A comparative analysis of polycyclic aromatic hydrocarbons in sediments from two southeastern Chinese bays. MARINE POLLUTION BULLETIN 2024; 203:116489. [PMID: 38759463 DOI: 10.1016/j.marpolbul.2024.116489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 05/08/2024] [Accepted: 05/09/2024] [Indexed: 05/19/2024]
Abstract
Sansha and Luoyuan Bay are influenced by different industrial structure, but the sources and pollution status of polycyclic aromatic hydrocarbons (PAHs), especially alkylated PAHs, are poorly understood. We studied 25 PAHs in surface sediments from the two bays. The results showed that PAHs concentrations in Sansha and Luoyuan Bay sediment range from 6.54 to 479.28 ng/g and 118.82 to 2984.09 ng/g, respectively. Alkylated PAHs dominated in Sansha (48.86 % of Σ25PAHs), while 3-ring PAHs dominated in Luoyuan (36.32 % of ∑25PAHs). Results of sources analysis indicated oil spills as the main PAHs source in Sansha, and domestic emissions and fossil fuel combustion in Luoyuan. Ecological risk assessment of showed low sediment risk, but in Luoyuan was higher than in Sansha. Compared with Luoyuan Bay, Sansha Bay emits less industrial pollutants, so the pollution is lower than Luoyuan Bay. Increased attention to protecting Luoyuan Bay is recommended.
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Affiliation(s)
- Yingying Qian
- School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361021, China; Xiamen Key Laboratory of Membrane Research and Application, Xiamen 361024, China
| | - Haowen Zheng
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Xiamen Marine Vocational and Technical College, Xiamen 361102, China; Key Laboratory of Marine Chemistry and Application Technology, Xiamen University, Xiamen 361102, China; College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China
| | - Xia Ouyang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Xiamen Marine Vocational and Technical College, Xiamen 361102, China; Key Laboratory of Marine Chemistry and Application Technology, Xiamen University, Xiamen 361102, China; College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China
| | - Yan Lin
- School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361021, China; Xiamen Key Laboratory of Membrane Research and Application, Xiamen 361024, China.
| | - Minggang Cai
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Xiamen Marine Vocational and Technical College, Xiamen 361102, China; Key Laboratory of Marine Chemistry and Application Technology, Xiamen University, Xiamen 361102, China; College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China.
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4
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Qian Y, Liang M, Zhao Z, Zhang Z, Cai M, Lin Y. Does mangrove leave falling dominate the bury of polycyclic aromatic hydrocarbons in the mangrove of China? MARINE ENVIRONMENTAL RESEARCH 2024; 194:106318. [PMID: 38218006 DOI: 10.1016/j.marenvres.2023.106318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/21/2023] [Accepted: 12/20/2023] [Indexed: 01/15/2024]
Abstract
Mangrove wetlands are vital coastal ecosystems that can absorb and accumulate pollutants. Polycyclic aromatic hydrocarbons (PAHs) are persistent organic pollutants that pose potential risks to ecosystems and human health. However, their source and transport fate in mangrove areas are poorly understood. This study investigates 29 PAHs pollution of water and sediment in Zhangjiangkou Mangrove Wetland, the northernmost large-scale mangrove wetland reserve in China. We examine the distribution, source, transport mechanisms and risk assessment of PAHs. The results show that the concentrations of PAHs in mangrove sediment range from 55.62 to 347.36 ng/g (DW), with 5-ring PAHs being the dominant species. While the concentrations of PAHs in surface water range from 10.61 to 46.39 ng/L, with 2-ring PAHs and alkylated PAHs being the dominant species. The PAHs concentrations in surface water and sediment of river are higher than those in mangrove area, indicating that mangrove water could receive PAHs through tidal exchange. Based on diagnostic ratios (DRs), principal component analysis (PCA), and positive matrix factorization (PMF), we infer that the leaf deposition (48.55%) could be an important pathway of PAHs in mangrove sediment except for river water transport (51.45%), while the PAHs in estuary water originate mainly from point sources such as biomass burning (50.96%) and traffic emission (49.04%). The range of toxic equivalents in surface water and sediment was 2.73-16.09 ng TEQ g-1 and 0.03-3.63 ng/L, respectively. Although the ecological risk assessment suggests that the PAHs pollution in surface water and sediment poses a low risk, we recommend more attention to the protection of the mangrove ecosystem. This study reveals that mangrove leaf falling might be a significant mechanism of PAH sequestration in the mangrove system, which deserves more attention in future research.
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Affiliation(s)
- Yingying Qian
- School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361021, China; Xiamen Key Laboratory of Membrane Research and Application, Xiamen 361024, China
| | - Meiru Liang
- School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361021, China; Xiamen Key Laboratory of Membrane Research and Application, Xiamen 361024, China
| | - Zixing Zhao
- School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361021, China; Xiamen Key Laboratory of Membrane Research and Application, Xiamen 361024, China
| | - Zihang Zhang
- School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361021, China; Xiamen Key Laboratory of Membrane Research and Application, Xiamen 361024, China
| | - Minggang Cai
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Key Laboratory of Marine Chemistry and Application Technology, Xiamen University, Xiamen 361102, China; College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China
| | - Yan Lin
- School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361021, China; Xiamen Key Laboratory of Membrane Research and Application, Xiamen 361024, China.
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5
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Lin Y, Cen Z, Peng J, Yu H, Huang P, Huang Q, Lu Z, Liu M, Ke H, Cai M. Occurrence and sources of microplastics and polycyclic aromatic hydrocarbons in surface sediments of Svalbard, Arctic. MARINE POLLUTION BULLETIN 2022; 184:114116. [PMID: 36152495 DOI: 10.1016/j.marpolbul.2022.114116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 08/30/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
Due to the distinct environment condition and geographic location, Svalbard has been recognized as a potential pollution reservoir in the Arctic. In this study, 8 surface sediment samples were collected from two fjords in Svalbard (Kongsfjorden and Rijpfjorden) in 2017, and they were searched for microplastics and polycyclic aromatic hydrocarbons (PAHs). PAHs were also investigated in 10 soil samples of Ny-Ålesund for local anthropogenic source analysis. The level of microplastics and other anthropogenic particles ranged from not detected (ND) to 4.936 particles/kg dry weight (DW). Fiber was the only shape of the microplastics found and three polymers (polyester, rayon and cellulose) were detected, which suggested that fisheries-related debris and textile materials were possible sources of microplastics and anthropogenic particles. For PAHs, the level of ∑26PAH was 9.2 ng/g to 67.1 ng/g (DW), and were dominated by lnP and BghiP, indicating petroleum combustion source. Further analysis revealed that traffic emissions from cars and diesel combustion from a local power plant were major sources of PAHs in soils of Ny-Alesund, while traffic emissions from ships were the dominate source of PAHs in sediments of Kongsfjorden and Rijpfjorden. A higher level of PAHs was observed in Ny-Alesund, confirming an anthropogenic input, while transport via ocean currents might contribute to the higher abundance of microplastics in Rijpfjorden. Further research and even long-term observation of pollutants are needed to fully understand the pollution status in polar regions.
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Affiliation(s)
- Yan Lin
- School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361021, China; Xiamen Key Laboratory of Membrane Research and Application, Xiamen 361024, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Zhengnan Cen
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China
| | - Jinping Peng
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
| | - Huimin Yu
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China
| | - Peng Huang
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China; College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Qinghui Huang
- College of Environmental Science and Engineering, Tongji University, Shanghai 200082, China
| | - Zhibo Lu
- College of Environmental Science and Engineering, Tongji University, Shanghai 200082, China
| | - Mengyang Liu
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Hongwei Ke
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Minggang Cai
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China.
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6
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Lakhmanov DE, Kozhevnikov AY, Pokryshkin SA, Semiletov IP, Kosyakov DS. Polycyclic aromatic hydrocarbons in the Siberian Arctic seas sediments. MARINE POLLUTION BULLETIN 2022; 180:113741. [PMID: 35596996 DOI: 10.1016/j.marpolbul.2022.113741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 06/15/2023]
Abstract
Polycyclic Aromatic Hydrocarbons (PAHs) are among the main persistent organic pollutants in the Arcticwhich enter the polar region from lower latitudes by air transport and ocean currents and accumulate in marine sediments. This work represents the first study in 25 years of the least studied and hard-to-reach areas of Siberian arctic seas. Sixteen priority PAHs as well as 1- and 2-methylnaphthalenes were analyzed by gas chromatography - tandem mass spectrometry in the twenty-four sediment samples taken from Kara, Laptev and East Siberian Seas in October 2020. The obtained sum concentrations ranged from 31 to 223 ng/ g with the greatest contribution of phenanthrene, benzo[b]fluoranthene, benzo[k]fluoranthene, as well as naphthalene and its methyl derivatives while the greatest PAH levels were observed in Laptev Sea. No correlations between sum PAH concentration, total organic carbon and black carbon contents were found. The toxic equivalent in benzo[a]pyrene units was from 2.2-18.2 ng/ g that shows the general safe environmental situation in the region. The overall PAH level is comparable with the data obtained in 1990s which indicates a long-term persistence of pollution despite an overall decline in global PAH emissions. The main sources of PAHs involve mainly coal/biomass and liquid fuel combustion with weaker contribution of petroleum sources.
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Affiliation(s)
- Dmitry E Lakhmanov
- Laboratory of Environmental Analytical Chemistry, Core Facility Center "Arktika", M.V. Lomonosov Northern (Arctic) Federal University, 163002 Arkhangelsk, Russia.
| | - Aleksandr Yu Kozhevnikov
- Laboratory of Environmental Analytical Chemistry, Core Facility Center "Arktika", M.V. Lomonosov Northern (Arctic) Federal University, 163002 Arkhangelsk, Russia
| | - Sergey A Pokryshkin
- Laboratory of Environmental Analytical Chemistry, Core Facility Center "Arktika", M.V. Lomonosov Northern (Arctic) Federal University, 163002 Arkhangelsk, Russia
| | - Igor P Semiletov
- International Arctic Research Center, University of Alaska Fairbanks, AK 99775, Fairbanks, USA; Pacific Oceanological Institute, Russian Academy of Sciences, 690041 Vladivostok, Russia; Institute of Natural Resources, Geology and Mineral Exploration, Tomsk National Research Polytechnic University, 634034 Tomsk, Russia
| | - Dmitry S Kosyakov
- Laboratory of Environmental Analytical Chemistry, Core Facility Center "Arktika", M.V. Lomonosov Northern (Arctic) Federal University, 163002 Arkhangelsk, Russia
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7
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Peng B, Hossain KB, Lin Y, Zhang M, Zheng H, Yu J, Meng X, Wang J, Cui Y, Wu B, Lou L, Cai M. Assessment and sources identification of microplastics, PAHs and OCPs in the Luoyuan Bay, China: Based on multi-statistical analysis. MARINE POLLUTION BULLETIN 2022; 175:113351. [PMID: 35123274 DOI: 10.1016/j.marpolbul.2022.113351] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/12/2021] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
Luoyuan Bay is a mariculture influenced water body located in southeastern China. Multi-statistical techniques were applied to 21 sampling locations in the bay to identify the sources of microplastics and other pollutants in the sediment. In microplastics detection, fragment was the most abundant shape (~36%), and rayon was the dominant polymer (~59%). The size of more than 48% of total microplastics observed was less than 200 μm. The study showed that the upper part of Luoyuan Bay was dominated by microplastic pollution, while the lower part of the bay was dominated by persistent organic pollutants (PAHs, OCPs). Mariculture is one of the main sources of pollution in Luoyuan Bay. Apart from mariculture, there were additional sources such as industry, land reclamation, port, and so on; industry and land reclamation were the leading sources of microplastics, while port, industry, and mariculture were the primary sources of PAHs and OCPs.
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Affiliation(s)
- Bo Peng
- Nanjing Centre, China Geological Survey, Nanjing 210016, China
| | - Kazi Belayet Hossain
- Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China; Key Laboratory of Marine Chemistry and Application (Xiamen University), Fujian Province University; College of Environment and Ecology, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Yan Lin
- Key Laboratory of Marine Chemistry and Application (Xiamen University), Fujian Province University; College of Ocean and Earth Science, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361102, China
| | - Mingyu Zhang
- College of Ocean and Earth Science, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Haowen Zheng
- College of Ocean and Earth Science, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Junjie Yu
- Nanjing Centre, China Geological Survey, Nanjing 210016, China
| | - Xiangliang Meng
- Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China; College of Environment and Ecology, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Jilong Wang
- Nanjing Centre, China Geological Survey, Nanjing 210016, China
| | - Yaozong Cui
- College of Ocean and Earth Science, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Bin Wu
- Nanjing Centre, China Geological Survey, Nanjing 210016, China
| | - Linghao Lou
- College of Ocean and Earth Science, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China
| | - Minggang Cai
- Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China; Key Laboratory of Marine Chemistry and Application (Xiamen University), Fujian Province University; College of Environment and Ecology, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Science, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China.
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8
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Corminboeuf A, Montero-Serrano JC, St-Louis R, Dalpé A, Gélinas Y. Pre- and post-industrial levels of polycyclic aromatic hydrocarbons in sediments from the Estuary and Gulf of St. Lawrence (eastern Canada). MARINE POLLUTION BULLETIN 2022; 174:113219. [PMID: 34871900 DOI: 10.1016/j.marpolbul.2021.113219] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 11/22/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
The concentrations of 23 polycyclic aromatic hydrocarbons (PAHs; 16 parent PAHs and 7 alkyl-PAHs) were determined in 45 surface sediment and 7 basal sediment box core samples retrieved from the Estuary and Gulf of St. Lawrence in eastern Canada. The concentration sums of 16 priority PAHs (Σ16PAHs) in the surface sediments (representing modern times or at least younger than the last decade) ranged from 71 to 5672 ng g-1. Σ16PAHs in the basal sediments ranged from 93 to 172 ng g-1 among the pre-industrial samples (pre-1900 common era or CE) and from 1216 to 1621 ng g-1 among the early post-industrial samples (~1930s and ~1940s CE). The highest Σ16PAH values occurred in samples retrieved from the Baie-Comeau-Matane area, an area affected by intense industrial anthropogenic activities. Source-diagnostic PAH ratios suggest a predominance of pyrogenic sources via atmospheric deposition, with a minor contribution of petrogenic seabed pockmark sources. The PAH concentrations in the sediments from the study areas reveal low ecological risks to benthic or other organisms living near the water-sediment interface.
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Affiliation(s)
- Anne Corminboeuf
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, QC G5L 3A1, Canada.
| | - Jean-Carlos Montero-Serrano
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, QC G5L 3A1, Canada.
| | - Richard St-Louis
- Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC G5L 3A1, Canada
| | - Allyson Dalpé
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, QC G5L 3A1, Canada; Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC G5L 3A1, Canada; Département de Chimie, Université Laval, Pavillon Alexandre-Vachon, 1045 avenue de la Médecine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Yves Gélinas
- Geotop and Department of Chemistry and Biochemistry, Concordia University, 7141 Sherbrooke St. West, Montréal, Québec H4B 1R6, Canada
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9
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Corminboeuf A, Montero-Serrano JC, St-Louis R. Spatial and temporal distributions of polycyclic aromatic hydrocarbons in sediments from the Canadian Arctic Archipelago. MARINE POLLUTION BULLETIN 2021; 171:112729. [PMID: 34298327 DOI: 10.1016/j.marpolbul.2021.112729] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 07/08/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
The concentrations of 23 polycyclic aromatic hydrocarbons (PAHs; 16 parent and 7 alkylated PAHs) were determined in 113 surface marine sediment samples, 13 on-land sediment samples and 8 subsampled push cores retrieved from the Canadian Arctic Archipelago (CAA). PAHs were extracted via accelerated solvent extraction and quantified via gas chromatography-mass spectrometry. The sums of the concentrations of 16 priority PAHs in the surface sediments ranged from 7.8 to 247.7 ng g-1 (dry weight basis, dw). The PAH inputs to the sediments have remained constant during the last century. Source-diagnostic ratios and statistical analysis suggest that the PAHs in the CAA mainly originate from natural petrogenic sources, with some pyrogenic sources. Temporal trends did not indicate major source shifts and largely indicated petrogenic inputs. Overall, the sediments retrieved from the CAA have low PAH concentrations, which indicates a low ecological risk for benthic or other organisms living near the water-sediment interface.
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Affiliation(s)
- Anne Corminboeuf
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, Geotop & Québec-Océan, 310 Allée des Ursulines, Rimouski, QC G5L 3A1, Canada.
| | - Jean-Carlos Montero-Serrano
- Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, Geotop & Québec-Océan, 310 Allée des Ursulines, Rimouski, QC G5L 3A1, Canada
| | - Richard St-Louis
- Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC G5L 3A1, Canada
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10
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Singha LP, Pandey P. Rhizosphere assisted bioengineering approaches for the mitigation of petroleum hydrocarbons contamination in soil. Crit Rev Biotechnol 2021; 41:749-766. [PMID: 33626996 DOI: 10.1080/07388551.2021.1888066] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The high demand for petroleum oil has led to hydrocarbon contamination in soil, including agricultural lands, and many other ecosystems across the globe. Physical and chemical treatments are effective strategies for the removal of high contamination levels and are useful for small areas, although with concerns of cost-effectiveness. Alternatively, several bacteria belonging to the Phylum: Proteobacteria, Bacteroidetes, Actinobacteria, Nocardioides, or Firmicutes are used for biodegradation of different hydrocarbons - aliphatic, polyaromatic hydrocarbons (PAH), and asphaltenes in the oil-contaminated soil. The rhizoremediation strategy with plant-microbe interactions has prospects to achieve the desired result in the field conditions. However, adequate biostimulation, and bioaugmentation with the suitable plant-microbe combination, and efficiency under a toxic environment needs to be evaluated. Modifying the microbiomes to achieve better biodegradation of contaminants is an upcoming strategy popularly known as microbiome engineering. In this review, rhizoremediation for the successful removal of the hydrocarbons have been critically discussed, with challenges for making it a feasible technology.HIGHLIGHTSPetroleum hydrocarbon contamination has increased around the globe.Rhizoremediation has the potential for the mitigation of pollutants from the contaminated sites.An accurate and detailed analysis of the physio-chemical and climatic conditions of the contaminated sites must be focused on.The suitable plant and bacteria, with other major considerations, may be employed for in-situ remediation.The appropriate data should be obtained using the omics approach to help toward the success of the rhizoremediation strategy.
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Affiliation(s)
| | - Piyush Pandey
- Department of Microbiology, Assam University, Silchar, India
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Chen A, Wu X, Simonich SLM, Kang H, Xie Z. Volatilization of polycyclic aromatic hydrocarbons (PAHs) over the North Pacific and adjacent Arctic Ocean: The impact of offshore oil drilling. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115963. [PMID: 33162218 DOI: 10.1016/j.envpol.2020.115963] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 10/15/2020] [Accepted: 10/27/2020] [Indexed: 06/11/2023]
Abstract
Air and seawater samples were collected in 2016 over the North Pacific Ocean (NPO) and adjacent Arctic Ocean (AO), and Polycyclic Aromatic Hydrocarbons (PAHs) were quantified in them. Atmospheric concentrations of ∑15 PAHs (gas + particle phase) were 0.44-7.0 ng m-3 (mean = 2.3 ng m-3), and concentrations of aqueous ∑15 PAHs (dissolved phase) were 0.82-3.7 ng L-1 (mean = 1.9 ng L-1). Decreasing latitudinal trends were observed for atmospheric and aqueous PAHs. Results of diagnostic ratios suggested that gaseous and aqueous PAHs were most likely to be related to the pyrogenic and petrogenic sources, respectively. Three sources, volatilization, coal and fuel oil combustion, and biomass burning, were determined by the PMF model for gaseous PAHs, with percent contributions of 10%, 44%, and 46%, respectively. The 4- ring PAHs underwent net deposition during the cruise, while some 3- ring PAHs were strongly dominated by net volatilization, even in the high latitude Arctic region. Offshore oil/gas production activities might result in the sustained input of low molecular weight 3- ring PAHs to the survey region, and further lead to the volatilization of them. Compared to the gaseous exchange fluxes, fluxes of atmospheric dry deposition and gaseous degradation were negligible. According to the extrapolated results, the gaseous exchange of semivolatile aromatic-like compounds (SALCs) may have a significant influence on the carbon cycling in the low latitude oceans, but not for the high latitude oceans.
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Affiliation(s)
- Afeng Chen
- Institute of Polar Environment & Anhui Key Laboratory of Polar Environment and Global Change, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, PR China; Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation, School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui, 241002, PR China
| | - Xiaoguo Wu
- Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation, School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui, 241002, PR China; Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR, 97331, USA.
| | - Staci L Massey Simonich
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR, 97331, USA
| | - Hui Kang
- Institute of Polar Environment & Anhui Key Laboratory of Polar Environment and Global Change, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, PR China
| | - Zhouqing Xie
- Institute of Polar Environment & Anhui Key Laboratory of Polar Environment and Global Change, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, PR China
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Lin Y, Liu L, Cai M, Rodenburg LA, Chitsaz M, Liu Y, Chen M, Deng H, Ke H. Isolating different natural and anthropogenic PAHs in the sediments from the northern Bering-Chukchi margin: Implications for transport processes in a warming Arctic. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 736:139608. [PMID: 32485380 DOI: 10.1016/j.scitotenv.2020.139608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/16/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) have become the dominating burden in the Arctic ecosystems, but their transport pathways and relative importance of different sources in the Arctic remained unclear, and this would be further complicated by climate change. Here we interpreted 27 PAHs in 34 surface sediments from the northern Bering-Chukchi margin. We integrated source apportionment methods (including diagnostic ratios, principal component analysis, hierarchical analysis, and positive matrix factorization (PMF) model) together with geochemistry parameters, which reveal a gradually clear picture of the spatial patterns of different sources. The total PAH concentrations (50.4 to 896.0 ng/g dw) exhibited a "hilly" shape with the increase of latitude, showing the highest level of PAHs in the northeast Chukchi Sea. The total BaP toxic equivalent quotient (TEQ) for carcinogenic compounds was from 1.06 to 33.3 ng TEQ/g. Most PAHs showed positive correlations with silt content, total organic carbon, stable carbon isotopes and black carbon (p < 0.01 or 0.05). Generally, source apportionment methods revealed an increasing petrogenic source of PAHs with latitudes. The PMF model further differentiated two petrogenic (36.7%), two pyrogenic (softwood and fossil fuel combustion, 35.5%) and one in-situ biogenic source (Perylene, 27.8%). An extremely high petrogenic signal was captured in the Canada Basin margin, possibly originating from the Mackenzie River via ice drifting with Beaufort Gyre, while another petrogenic source may come from coal deposit erosion by deglaciation. Softwood combustion (characterized by Retene) exhibited exclusively higher contribution in the northeast Chukchi Sea and might result from the increasing wildfire in Alaska due to climate change, whereas fossil fuel combustion exhibited similar contributions across different latitudes. Our results revealed natural PAHs as important "inside sources" in the Arctic, which are highly sensitive to global warming and deserves more attention.
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Affiliation(s)
- Yan Lin
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Lin Liu
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Minggang Cai
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China.
| | - Lisa A Rodenburg
- Department of Environmental Sciences, Rutgers University, New Brunswick 08901, USA
| | - Mahdi Chitsaz
- Department of Environmental Sciences, Rutgers University, New Brunswick 08901, USA
| | - Yanguang Liu
- Key Laboratory of Marine Geology and Metallogeny, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Mian Chen
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Hengxiang Deng
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Hongwei Ke
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
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Kahkashan S, Wang X, Chen J, Bai Y, Ya M, Wu Y, Cai Y, Wang S, Saleem M, Aftab J, Inam A. Concentration, distribution and sources of perfluoroalkyl substances and organochlorine pesticides in surface sediments of the northern Bering Sea, Chukchi Sea and adjacent Arctic Ocean. CHEMOSPHERE 2019; 235:959-968. [PMID: 31561312 DOI: 10.1016/j.chemosphere.2019.06.219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 06/11/2019] [Accepted: 06/27/2019] [Indexed: 06/10/2023]
Abstract
Perfluoroalkyl substances (PFAS) and organochlorine pesticides (OCPs) in surface sediments were investigated from the Bering Sea, the Chukchi Sea and adjacent Arctic Ocean in 2010. Total concentrations (dry weight) of Σ14PFAS in surface sediments (0.85 ± 0.22 ng g-1) of the Bering Sea were lower than that in the Chukchi Sea and adjacent Arctic Ocean (1.27 ± 0.53 ng g-1). Perfluoro-butanoic acid (PFBS) and perfluoro-octanoic acid (PFOA) were the dominant PFAS in these areas. The concentrations of Σ15OCPs in the sediment of the Bering Sea (13.00 ± 6.17 ng g-1) was slightly higher than that in the Chukchi and Arctic Ocean (12.05 ± 2.27 ng g-1). The most abundant OCPs were hexachlorocyclohexane isomers (HCHs) and dichlorodiphenyltrichloroethane (DDT) and its metabolites. The composition patterns of HCHs and DDTs indicated that they were mainly derived from the early residues via river runoff. Increasing trends of PFAS, HCHs and DDTs in surface sediments from the Bering Sea to the Arctic Ocean were found, indicating oceanic transport. In summary, the concentrations of OCPs were orders of magnitude greater than the observed PFAS concentrations, and the concentrations of PFAS and OCPs in surface sediments from the Bering Sea to the Chukchi Sea and adjacent Arctic Ocean are at the low to moderate levels by comparing with other coastal and marine sediments worldwide.
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Affiliation(s)
- Sanober Kahkashan
- State Key Laboratory of Marine Environmental Science, College of the Environment & Ecology, Xiamen University, Xiamen, 361102, China; Key Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China; National Institute of Oceanography, Clifton, Block-1, Karachi, 75600, Pakistan
| | - Xinhong Wang
- State Key Laboratory of Marine Environmental Science, College of the Environment & Ecology, Xiamen University, Xiamen, 361102, China.
| | - Jianfang Chen
- Key Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China
| | - Youcheng Bai
- Key Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration & Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China
| | - Miaolei Ya
- State Key Laboratory of Marine Environmental Science, College of the Environment & Ecology, Xiamen University, Xiamen, 361102, China
| | - Yuling Wu
- State Key Laboratory of Marine Environmental Science, College of the Environment & Ecology, Xiamen University, Xiamen, 361102, China
| | - Yizhi Cai
- State Key Laboratory of Marine Environmental Science, College of the Environment & Ecology, Xiamen University, Xiamen, 361102, China
| | - Siquan Wang
- State Key Laboratory of Marine Environmental Science, College of the Environment & Ecology, Xiamen University, Xiamen, 361102, China
| | - Monawwar Saleem
- National Institute of Oceanography, Clifton, Block-1, Karachi, 75600, Pakistan
| | - Javed Aftab
- National Institute of Oceanography, Clifton, Block-1, Karachi, 75600, Pakistan
| | - Asif Inam
- National Institute of Oceanography, Clifton, Block-1, Karachi, 75600, Pakistan
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Araujo FM, Azevedo GC, Nogueira FDS, Matos RC, Matos MAC. Eco-friendly Method for the Determination of Polycyclic Aromatic Hydrocarbons in Sediments by HS-SPME-GC/MS. Chromatographia 2019. [DOI: 10.1007/s10337-019-03825-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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Poirier MC, Lair S, Michaud R, Hernández-Ramon EE, Divi KV, Dwyer JE, Ester CD, Si NN, Ali M, Loseto LL, Raverty SA, St. Leger JA, van Bonn WG, Colegrove K, Burek-Huntington KA, Suydam R, Stimmelmayr R, Wise JP, Wise SS, Beauchamp G, Martineau D. Intestinal polycyclic aromatic hydrocarbon-DNA adducts in a population of beluga whales with high levels of gastrointestinal cancers. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2019; 60:29-41. [PMID: 30307653 PMCID: PMC6320268 DOI: 10.1002/em.22251] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/29/2018] [Accepted: 08/29/2018] [Indexed: 05/14/2023]
Abstract
Carcinogenic polycyclic aromatic hydrocarbons (PAHs) were disposed directly into the Saguenay River of the St. Lawrence Estuary (SLE) by local aluminum smelters (Quebec, Canada) for 50 years (1926-1976). PAHs in the river sediments are likely etiologically related to gastrointestinal epithelial cancers observed in 7% of 156 mature (>19-year old) adult beluga found dead along the shorelines. Because DNA adduct formation provides a critical link between exposure and cancer induction, and because PAH-DNA adducts are chemically stable, we hypothesized that SLE beluga intestine would contain PAH-DNA adducts. Using an antiserum specific for DNA modified with several carcinogenic PAHs, we stained sections of paraffin-embedded intestine from 51 SLE beluga (0-63 years), 4 Cook Inlet (CI) Alaska beluga (0-26 years), and 20 beluga (0-46 years) living in Arctic areas (Eastern Beaufort Sea, Eastern Chukchi Sea, Point Lay Alaska) and aquaria, all with low PAH contamination. Stained sections showed nuclear light-to-dark pink color indicating the presence of PAH-DNA adducts concentrated in intestinal crypt epithelial lining cells. Scoring of whole tissue sections revealed higher values for the 51 SLE beluga, compared with the 20 Arctic and aquarium beluga (P = 0.003). The H-scoring system, applied to coded individual photomicrographs, confirmed that SLE beluga and CI beluga had levels of intestinal PAH-DNA adducts significantly higher than Arctic and aquarium beluga (P = 0.003 and 0.02, respectively). Furthermore, high levels of intestinal PAH-DNA adducts in four SLE beluga with gastrointestinal cancers, considered as a group, support a link of causality between PAH exposure and intestinal cancer in SLE beluga. Environ. Mol. Mutagen. 60:29-41, 2019. Published 2018. This article is a U.S. Government work and is in the public domain in the USA.
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Affiliation(s)
- Miriam C. Poirier
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892-4255, U.S.A
| | - Stéphane Lair
- Canadian Wildlife Health Cooperative, Département de pathologie et microbiologie, Faculté de médecine vétérinaire, Université de Montréal, St. Hyacinthe, PQ, J2S2M2, Canada
| | - Robert Michaud
- Groupe de Recherche et d’Education de Mammifères Marins (GREMM), Tadoussac, PQ, GOT2A0, Canada
| | - Elena E. Hernández-Ramon
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892-4255, U.S.A
| | - Kathyayini V. Divi
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892-4255, U.S.A
| | - Jennifer E. Dwyer
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892-4255, U.S.A
| | - Corbin D. Ester
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892-4255, U.S.A
| | - Nancy N. Si
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892-4255, U.S.A
| | - Mehnaz Ali
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892-4255, U.S.A
| | - Lisa L. Loseto
- Fisheries and Oceans Canada, Freshwater Institute, Winnipeg, MB, R3T 2N6, Canada
| | - Stephen A. Raverty
- Marine Mammal Research Unit, University of British Columbia, Animal Health Center, Abbotsford, BC, V3G 2M3, Canada
| | | | - William G. van Bonn
- John G. Shedd Aquarium, A. Watson Armour III Center for Aquatic Animal Health and Welfare, Chicago, IL, 60605, U.S.A
| | - Kathleen Colegrove
- Zoological Pathology Program, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, 3300 Golf Rd., Brookfield IL, 60513, U.S.A
| | | | - Robert Suydam
- North Slope Borough, Dept. of Wildlife Management, Barrow, AK, 99723, U.S.A
| | - Raphaela Stimmelmayr
- Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, 99775, U.S.A
| | - John Pierce Wise
- Wise Laboratory of Genetic and Environmental Toxicology, Department of Pharmacology and Toxicology, University of Louisville School of Medicine, 505S. Hancock St., CTRB, Louisville, KY, 40202, U.S.A
| | - Sandra S. Wise
- Wise Laboratory of Genetic and Environmental Toxicology, Department of Pharmacology and Toxicology, University of Louisville School of Medicine, 505S. Hancock St., CTRB, Louisville, KY, 40202, U.S.A
| | - Guy Beauchamp
- Canadian Wildlife Health Cooperative, Département de pathologie et microbiologie, Faculté de médecine vétérinaire, Université de Montréal, St. Hyacinthe, PQ, J2S2M2, Canada
| | - Daniel Martineau
- Canadian Wildlife Health Cooperative, Département de pathologie et microbiologie, Faculté de médecine vétérinaire, Université de Montréal, St. Hyacinthe, PQ, J2S2M2, Canada
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