1
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Leshuk TC, Young ZW, Wilson B, Chen ZQ, Smith DA, Lazaris G, Gopanchuk M, McLay S, Seelemann CA, Paradis T, Bekele A, Guest R, Massara H, White T, Zubot W, Letinski DJ, Redman AD, Allen DG, Gu F. A Light Touch: Solar Photocatalysis Detoxifies Oil Sands Process-Affected Waters Prior to Significant Treatment of Naphthenic Acids. ACS ES&T WATER 2024; 4:1483-1497. [PMID: 38633367 PMCID: PMC11019557 DOI: 10.1021/acsestwater.3c00616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/25/2024] [Accepted: 01/25/2024] [Indexed: 04/19/2024]
Abstract
Environmental reclamation of Canada's oil sands tailings ponds is among the single largest water treatment challenges globally. The toxicity of oil sands process-affected water (OSPW) has been associated with its dissolved organics, a complex mixture of naphthenic acid fraction components (NAFCs). Here, we evaluated solar treatment with buoyant photocatalysts (BPCs) as a passive advanced oxidation process (P-AOP) for OSPW remediation. Photocatalysis fully degraded naphthenic acids (NAs) and acid extractable organics (AEO) in 3 different OSPW samples. However, classical NAs and AEO, traditionally considered among the principal toxicants in OSPW, were not correlated with OSPW toxicity herein. Instead, nontarget petroleomic analysis revealed that low-polarity organosulfur compounds, composing <10% of the total AEO, apparently accounted for the majority of waters' toxicity to fish, as described by a model of tissue partitioning. These findings have implications for OSPW release, for which a less extensive but more selective treatment may be required than previously expected.
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Affiliation(s)
- Timothy
M. C. Leshuk
- H2nanO
Inc., Kitchener, Ontario, Canada N2R 1E8
- Department
of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 3E5
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- Waterloo
Institute for Nanotechnology, University
of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Zachary W. Young
- H2nanO
Inc., Kitchener, Ontario, Canada N2R 1E8
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- Waterloo
Institute for Nanotechnology, University
of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Brad Wilson
- H2nanO
Inc., Kitchener, Ontario, Canada N2R 1E8
- Stantec, Waterloo, Ontario, Canada N2L 0A4
| | - Zi Qi Chen
- H2nanO
Inc., Kitchener, Ontario, Canada N2R 1E8
- Department
of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 3E5
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- Waterloo
Institute for Nanotechnology, University
of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Danielle A. Smith
- H2nanO
Inc., Kitchener, Ontario, Canada N2R 1E8
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- Waterloo
Institute for Nanotechnology, University
of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- P&P
Optica, Waterloo, Ontario, Canada N2 V 2C3
| | - Greg Lazaris
- H2nanO
Inc., Kitchener, Ontario, Canada N2R 1E8
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- Waterloo
Institute for Nanotechnology, University
of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- Department
of Mining and Materials Engineering, McGill
University, Montreal, Quebec, Canada H3A 0C5
| | - Mary Gopanchuk
- H2nanO
Inc., Kitchener, Ontario, Canada N2R 1E8
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- Waterloo
Institute for Nanotechnology, University
of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Sean McLay
- H2nanO
Inc., Kitchener, Ontario, Canada N2R 1E8
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- Waterloo
Institute for Nanotechnology, University
of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Corin A. Seelemann
- H2nanO
Inc., Kitchener, Ontario, Canada N2R 1E8
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- Waterloo
Composite Biomaterials Systems Lab, University
of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- Waterloo
Institute for Nanotechnology, University
of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Theo Paradis
- Canadian
Natural Resources Ltd., Calgary, Alberta, Canada T2P 4J8
| | - Asfaw Bekele
- Imperial
Oil Ltd., Calgary, Alberta, Canada T2C 5N1
- ExxonMobil
Biomedical Sciences, Inc., Annandale, New Jersey 08801, United States
| | - Rodney Guest
- Suncor Energy Inc., Calgary, Alberta, Canada T2P 3E3
| | - Hafez Massara
- Suncor Energy Inc., Calgary, Alberta, Canada T2P 3E3
- Trans-Northern Pipelines Inc., Richmond Hill, Ontario, Canada L4B 3P6
| | - Todd White
- Teck Resources Ltd., Vancouver, British Columbia, Canada V6C 0B3
| | - Warren Zubot
- Syncrude Canada Ltd., Fort McMurray, Alberta, Canada T9H 0B6
| | - Daniel J. Letinski
- ExxonMobil
Biomedical Sciences, Inc., Annandale, New Jersey 08801, United States
| | - Aaron D. Redman
- ExxonMobil
Biomedical Sciences, Inc., Annandale, New Jersey 08801, United States
| | - D. Grant Allen
- Department
of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 3E5
| | - Frank Gu
- H2nanO
Inc., Kitchener, Ontario, Canada N2R 1E8
- Department
of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 3E5
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
- Waterloo
Institute for Nanotechnology, University
of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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2
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Elsheref M, Messina L, Tarr MA. Photochemistry of oil in marine systems: developments since the Deepwater Horizon spill. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2023; 25:1878-1908. [PMID: 37881013 DOI: 10.1039/d3em00248a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
Oil spills represent a major source of negative environmental impacts in marine systems. Despite many decades of research on oil spill behavior, photochemistry was neglected as a major factor in the fate of oil spilled in marine systems. Subsequent to the Deepwater Horizon oil spill, numerous studies using varied approaches have demonstrated the importance of photochemistry, including short-term impacts (hours to days) that were previously unrecognized. These studies have demonstrated the importance of photochemistry in the overall oil transformation after a spill and more specifically the impacts on emulsification, oxygenation, and microbial interactions. In addition to new perspectives, advances in analytical approaches have allowed an improved understanding of oil photochemistry after maritime spill. Although the literature on the Deepwater Horizon spill is extensive, this review focuses only on studies relevant to the advances in oil photochemistry understanding since the Deepwater Horizon spill.
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Affiliation(s)
- Mohamed Elsheref
- Department of Chemistry, University of New Orleans, New Orleans, LA 70148, USA.
| | - Lena Messina
- Department of Chemistry, University of New Orleans, New Orleans, LA 70148, USA.
| | - Matthew A Tarr
- Department of Chemistry, University of New Orleans, New Orleans, LA 70148, USA.
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3
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Ye J, Zheng H, Liu M, Tanli Y, Qi H, Jing L, Huang J, Hossain KB, Ke H, Wang C, Wang S, Cai M. Upwelling impact and lateral transport of dissolved PAHs in the Taiwan Strait and adjacent South China Sea. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 895:165159. [PMID: 37385490 DOI: 10.1016/j.scitotenv.2023.165159] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/22/2023] [Accepted: 06/25/2023] [Indexed: 07/01/2023]
Abstract
The spatial distribution and depth profile of dissolved polycyclic aromatic hydrocarbons (PAHs) were investigated in the western Taiwan Strait (TWS) and northeastern South China Sea (SCS) during the southwest monsoon for a comprehensive study of spatial distribution, potential sources, upwelling, and lateral PAHs transport flux to assess the impacts of oceanic processes. The concentrations of ∑14PAHs were 33 ± 14 ng L-1 and 23 ± 11 ng L-1 in western TWS and northeastern SCS, respectively. A minor difference in potential sources in different areas was shown in principle component analysis results, which illustrated mixed sources (petrogenic and pyrogenic) in western TWS and petrogenic sources in northeastern SCS. An "enrichment in surface or deep but depletion in medium water" distribution pattern of PAHs depth profile during summertime was observed in Taiwan Bank, which was potentially influenced by the upwelling. The greatest lateral ∑14PAHs transport flux was found along the Taiwan Strait Current area (43.51 g s-1), followed by those along South China Sea Warm Current and Guangdong Coastal Current areas. Though the oceanic response to PAHs varied relatively slowly, the ocean current was a less-dominant pathway for PAHs exchange between the SCS and the East China Sea (ECS).
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Affiliation(s)
- Jiandong Ye
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Haowen Zheng
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Mengyang Liu
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China; State Key Laboratory of Marine Pollution, City University of Hong Kong, 999077, Hong Kong, China
| | - Yina Tanli
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Huaiyuan Qi
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Lingkun Jing
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Jiajin Huang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Kazi Belayet Hossain
- Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China; College of Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Hongwei Ke
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Chunhui Wang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
| | - Shanlin Wang
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; 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; College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China; Coastal and Ocean Management Institute, Xiamen University, Xiamen 361102, China; College of Environment and Ecology, Xiamen University, Xiamen 361102, China.
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4
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Scott DE, Schulze M, Stryker JM, Tykwinski RR. Deciphering structure and aggregation in asphaltenes: hypothesis-driven design and development of synthetic model compounds. Chem Soc Rev 2021; 50:9202-9239. [PMID: 34231589 DOI: 10.1039/d1cs00048a] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Asphaltenes comprise the heaviest and least understood fraction of crude petroleum. The asphaltenes are a diverse and complex mixture of organic and organometallic molecules in which most of the molecular constituents are tightly aggregated into more complicated suprastructures. The bulk properties of asphaltenes arise from a broad range of polycyclic aromatics, heteroatoms, and polar functional groups. Despite much analytical effort, the precise molecular architectures of the material remain unresolved. To understand asphaltene characteristics and reactivity, the field has turned to synthetic model compounds that mirror asphaltene structure, aggregation behavior, and thermal chemistry, including the nucleation of coke. Historically, molecular asphaltene modeling was limited to commercial compounds, offering little illumination and few opportunities for hypothesis-driven research. More recently, however, rational molecular design and modern organic synthesis have started to impact this area. This review provides an overview of commercially available model compounds but is principally focused on the design and synthesis of structurally advanced and appropriately functionalized compounds to mimic the physical and chemical behavior of asphaltenes. Efforts to model asphaltene aggregation are briefly discussed, and a prognosis for the field is offered. A referenced tabulation of the synthetic compounds reported to date is provided.
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Affiliation(s)
- David E Scott
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada.
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5
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Desmond DS, Saltymakova D, Smith A, Wolfe T, Snyder N, Polcwiartek K, Bautista M, Lemes M, Hubert CRJ, Barber DG, Isleifson D, Stern GA. Photooxidation and biodegradation potential of a light crude oil in first-year sea ice. MARINE POLLUTION BULLETIN 2021; 165:112154. [PMID: 33735684 DOI: 10.1016/j.marpolbul.2021.112154] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 01/30/2021] [Accepted: 02/02/2021] [Indexed: 06/12/2023]
Abstract
Disappearing sea ice in the Arctic region results in a pressing need to develop oil spill mitigation techniques suitable for ice-covered waters. The uncertainty around the nature of an oil spill in the Arctic arises from the ice-covered waters and sub-zero temperatures, and how they may influence natural attenuation efficiency. The Sea-ice Environmental Research Facility was used to create a simulated Arctic marine setting. This paper focuses on the potential for biodegradation of the bulk crude oil content (encapsulated in the upper regions of the ice), to provide insight regarding the possible fate of crude oil in an Arctic marine setting. Cheaper and faster methods of chemical composition analysis were applied to the samples to assess for weathering and transformation effects. Results suggest that brine volume in ice may not be sufficient at low temperatures to encompass biodegradation and that seawater is more suitable for biodegradation.
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6
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Saltymakova D, Desmond DS, Isleifson D, Firoozy N, Neusitzer TD, Xu Z, Lemes M, Barber DG, Stern GA. Effect of dissolution, evaporation, and photooxidation on crude oil chemical composition, dielectric properties and its radar signature in the Arctic environment. MARINE POLLUTION BULLETIN 2020; 151:110629. [PMID: 31753562 DOI: 10.1016/j.marpolbul.2019.110629] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 09/24/2019] [Indexed: 06/10/2023]
Abstract
Accidental release of petroleum in the Arctic is of growing concern owing to increases in ship traffic and possible future oil exploration. A crude oil-in-sea ice mesocosm experiment was conducted to identify oil-partitioning trends in sea ice and determine the effect of weathering on crude oil permittivity. The dissolution of the lighter fractions increased with decreasing bulk oil-concentration because of greater oil-brine interface area. Movement of the oil towards the ice surface predominated over dissolution process when oil concentrations exceeded 1 mg/mL. Evaporation decreased oil permittivity due to losses of low molecular weight alkanes and increased asphaltene-resin interactions. Photooxidation increased the permittivity of the crude oil due to the transformation of branched aromatics to esters and ketones. Overall, the weathering processes influenced crude oil permittivity by up to 15%, which may produce sufficient quantifiable differences in the measured normalized radar cross-section of the ice.
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Affiliation(s)
| | | | | | | | | | - Zhantang Xu
- State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, China
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7
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Fang Z, Huang R, Chelme-Ayala P, Shi Q, Xu C, Gamal El-Din M. Comparison of UV/Persulfate and UV/H 2O 2 for the removal of naphthenic acids and acute toxicity towards Vibrio fischeri from petroleum production process water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 694:133686. [PMID: 31400695 DOI: 10.1016/j.scitotenv.2019.133686] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/22/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
The ultraviolet light-activated persulfate process (UV/Persulfate) has received much attention in recent years as a novel advanced oxidation method for the treatment of municipal and industrial wastewater. This work investigated the UV/Persulfate and UV/H2O2 processes for the treatment of real oil sands process water (OSPW) at ambient pH condition using a medium pressure mercury lamp (emission between 200 and 530 nm). The degradation performances towards fluorophore organic compounds and naphthenic acids (NAs) in OSPW were evaluated using synchronous fluorescence spectrometry and ultra performance liquid chromatography time-of-flight mass spectrometry, respectively. Compared to the UV/H2O2 process, the UV/Persulfate process exhibited higher efficiency to remove both NAs and fluorophore organic compounds. Under 40 min of UV exposure and incident irradiance of 3.50 mW cm-2, fluorophore organic compounds were greatly degraded by UV/Persulfate (2 mM) and two- and three-ring fused organics were completely removed. 59.4%, 83.8% and 92.2% of O2-NAs in OSPW were removed with persulfate dosages of 0.5, 2, and 4 mM, respectively. The removal efficiency decreased along with the number of oxygen atoms in NAs (83.8%, 49.3%, and 46.8% for O2-, O3-, and O4-NAs, respectively) with 2 mM of persulfate, because of the formation of oxidized NAs in the same process. The structure-reactivity of O2-NA compounds fitted pseudo-first order kinetics in UV/Persulfate process with the rate constants ranging from 0.0156 min-1 to 0.1511 min-1. NAs with higher carbon numbers and double bond equivalence were more reactive in the UV/Persulfate oxidation process. The acute toxicity of OSPW to Vibrio fischeri was significantly reduced after the UV/Persulfate and UV/H2O2 treatments. Overall results demonstrated that the UV/Persulfate oxidation can be an effective alternative for future reclamation of OSPW.
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Affiliation(s)
- Zhi Fang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China; Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Rongfu Huang
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Pamela Chelme-Ayala
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Quan Shi
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Chunming Xu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Mohamed Gamal El-Din
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
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8
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Schemeth D, Nielsen NJ, Andersson JT, Christensen JH. A tiered analytical approach for target, non-target and suspect screening analysis of polar transformation products of polycyclic aromatic compounds. CHEMOSPHERE 2019; 235:175-184. [PMID: 31255758 DOI: 10.1016/j.chemosphere.2019.06.149] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 06/16/2019] [Accepted: 06/20/2019] [Indexed: 06/09/2023]
Abstract
Polycyclic aromatic compounds (PACs) possess toxicity towards humans, and their presence in the environment is unwanted. Polar transformation products (TPs) are more mobile, and can be considered emerging contaminants, as they represent a more bioavailable carrier of the same toxic properties. Acidic TPs has been proposed as an important class of polar TPs. This study presents a tiered analytical approach to investigate acidic and polar PAC TPs in environmental conditions. The tiered approach exploits target analysis for quantification of acids; suspect screening for tentative identification based on retention time and spectral matching using databases; and finally non-target analysis based on chromatography and data independent broadband MS to highlight potentially unknown analyte peaks. The approach includes a mixed-mode anion exchange solid phase extraction (MAX-SPE) to fractionate neutral and acidic compounds, and is applied to three cases: I) Photo-oxidation of six PACs generated suspected hydroxylated-, carbonylated- and carboxylated PACs but also proposed the presence of mono- and dicarboxylic acids, which have not been reported elsewhere. For a subset of four acids, conversion rates were determined. II) Recovery of spiked acids from diesel spilled harbor water was 80% by LC-MS, and diesel spill weathering was evaluated from the neutral fraction by GC-MS. III) By non-target analysis sulfonated PACs, presumable derived from photo-oxidation, were detected in run-off basins of an arctic landfarm, alongside hypothesized naturally occuring fatty acids. The tiered approach is a sensitive and versatile tool to extract information on PACs and their polar TPs from polluted environmental sites.
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Affiliation(s)
- Dieter Schemeth
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark.
| | - Nikoline J Nielsen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Jan T Andersson
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstrasse 30, 48149, Münster, Germany
| | - Jan H Christensen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
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9
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Cho E, Park M, Hur M, Kang G, Kim YH, Kim S. Molecular-level investigation of soils contaminated by oil spilled during the Gulf War. JOURNAL OF HAZARDOUS MATERIALS 2019; 373:271-277. [PMID: 30925386 DOI: 10.1016/j.jhazmat.2019.03.084] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 03/12/2019] [Accepted: 03/18/2019] [Indexed: 06/09/2023]
Abstract
In this study, molecular-level chemical compositions of soils contaminated by oil spilled during the Gulf War were studied. Two soil samples, respectively collected at 0.1 m and between 0.5 and 1 m below the surface from an oil spill site, were extracted with organic solvents and water. The extracts were analyzed via ultrahigh resolution FT-ICR and two-dimensional gas chromatography/high resolution mass spectrometry. The data showed that the spilled oil was significantly affected by vaporization due to high surface temperatures in the desert. The data obtained with (+) atmospheric pressure photo ionization (APPI) and (-) electrospray ionization (ESI) coupled with ultrahigh resolution-mass spectrometry (UHR-MS) indicated that the degradation of aromatic compounds and increase in oxygen-containing classes occurred in the following order: surface soil > below surface soil > crude oil. The oxygenated compounds were confirmed by principal component analysis. The score and loading plots of Ox and SOx showed that they were the major contributors to differentiate the samples. However, a comparison with previously reported oceanic oil spills showed that less significant degradation occurred even after almost 30 years. Our data can provide an information basis for designing a strategy for clean-up and restoration efforts of Gulf War oil spills.
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Affiliation(s)
- Eunji Cho
- Department of Chemistry, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Moonhee Park
- Biomedical Omics Group, Korea Basic Science Institute, 162 Yeongudanji-ro, Cheongju, Chungcheongbuk-do 28119, Republic of Korea
| | - Manhoi Hur
- Department of Botany and Plant Sciences, and Institute of Integrative Genome Biology, University of California, Riverside, CA 92506, United States
| | - Guyoung Kang
- Department of Environmental Sciences, Hankuk University of Foreign Studies, 81 Oedae-ro, Mohyeon-eup, Cheoin-gu 17035, Republic of Korea.
| | - Young Hwan Kim
- Biomedical Omics Group, Korea Basic Science Institute, 162 Yeongudanji-ro, Cheongju, Chungcheongbuk-do 28119, Republic of Korea; Graduate School of Analytical Science and Technology, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea.
| | - Sunghwan Kim
- Department of Chemistry, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea; Green-Nano Materials Research Center, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
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10
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Niles SF, Chacón-Patiño ML, Chen H, McKenna AM, Blakney GT, Rodgers RP, Marshall AG. Molecular-Level Characterization of Oil-Soluble Ketone/Aldehyde Photo-Oxidation Products by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry Reveals Similarity Between Microcosm and Field Samples. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:6887-6894. [PMID: 31149817 DOI: 10.1021/acs.est.9b00908] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We present a solid-phase extraction method followed by derivatization with a charged tag to characterize ketone/aldehyde-containing functionalities (proposed photo-oxidation transformation products) in weathered petroleum by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). A photo-oxidation-only microcosm mimics solar irradiation of crude oil in the environment after an oil spill. A biodegradation-only microcosm enables independent determination as to which of the two weathering processes contributes to the formation of oil-soluble ketone/aldehyde species. Results confirm that photo-oxidation produces ketones/aldehydes in crude oil when exposed to solar radiation in laboratory experiments, whereas biodegraded oil samples do not produce ketone/aldehyde compounds. Field samples collected after different time periods and locations after the Deepwater Horizon oil spill are also shown to contain ketones/aldehydes, and comparison of field and photo-oxidation-only microcosm transformation products reveal remarkable similarity. These results indicate that the photo-oxidation microcosm comprehensively represents ketone/aldehyde-formation products in the field, whereas the biodegradation microcosm does not. Solid-phase extraction coupled with derivatization leads to selective identification of ketone/aldehyde species by MS. Although improved dynamic range and slightly reduced mass spectral complexity is achieved by separation/derivatization, comprehensive molecular characterization still requires mass resolving power and mass accuracy provided by FT-ICR MS.
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Affiliation(s)
- Sydney F Niles
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftain Way , Tallahassee , Florida 32306 , United States
- Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory , Florida State University , Tallahassee , Florida 32310 , United States
| | - Martha L Chacón-Patiño
- Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory , Florida State University , Tallahassee , Florida 32310 , United States
| | - Huan Chen
- Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory , Florida State University , Tallahassee , Florida 32310 , United States
| | - Amy M McKenna
- Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory , Florida State University , Tallahassee , Florida 32310 , United States
| | - Greg T Blakney
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftain Way , Tallahassee , Florida 32306 , United States
| | - Ryan P Rodgers
- Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory , Florida State University , Tallahassee , Florida 32310 , United States
- Future Fuels Institute , Florida State University , 1800 East Paul Dirac Drive , Tallahassee , Florida 32310 , United States
| | - Alan G Marshall
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftain Way , Tallahassee , Florida 32306 , United States
- Ion Cyclotron Resonance Program, National High Magnetic Field Laboratory , Florida State University , Tallahassee , Florida 32310 , United States
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11
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Thomas MJ, Collinge E, Witt M, Palacio Lozano DC, Vane CH, Moss-Hayes V, Barrow MP. Petroleomic depth profiling of Staten Island salt marsh soil: 2ω detection FTICR MS offers a new solution for the analysis of environmental contaminants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 662:852-862. [PMID: 30708300 DOI: 10.1016/j.scitotenv.2019.01.228] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/20/2019] [Accepted: 01/21/2019] [Indexed: 06/09/2023]
Abstract
Staten Island is located in one of the most densely populated regions of the US: the New York/New Jersey Estuary. Marine and industrial oil spills are commonplace in the area, causing the waterways and adjacent marshes to become polluted with a range of petroleum-related contaminants. Using Rock-Eval pyrolysis, the hydrocarbon impact on a salt marsh was assessed at regular intervals down to 90 cm, with several key sampling depths of interest identified for further analysis. Ultrahigh resolution data are obtained by direct infusion (DI) atmospheric pressure photoionization (APPI) on a 12 T solariX Fourier transform ion cyclotron resonance mass spectrometer (FTICR MS) allowing trends in the compositional profile with depth to be observed, such as changes in the relative hydrocarbon intensity and the relative contributions from oxygen- and sulfur-containing groups. These trends may correlate with the timing of major oil spills and leaks of petroleum and other industrial chemicals into the waterways. The use of gas chromatography (GC) coupled to a 7 T solariX 2XR FTICR MS equipped with an atmospheric pressure chemical ionization (APCI) ion source offers retention time resolved and extensive compositional information for the complex environmental samples complementary to that obtained by DI-APPI. The compositional profile observed using GC-APCI FTICR MS includes contributions from phosphorous-containing groups, which may be indicative of contamination from other anthropogenic sources.
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Affiliation(s)
- Mary J Thomas
- MAS CDT, Senate House, University of Warwick, Coventry CV4 7AL, UK; Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK.
| | - Emma Collinge
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK.
| | | | - Diana Catalina Palacio Lozano
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK; Facultad de Ciencias, Universidad Industrial de Santander, Bucaramanga, Colombia.
| | - Christopher H Vane
- British Geological Survey, Centre for Environmental Geochemistry, Keyworth NG12 5GG, UK.
| | - Vicky Moss-Hayes
- British Geological Survey, Centre for Environmental Geochemistry, Keyworth NG12 5GG, UK.
| | - Mark P Barrow
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK.
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12
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de Oliveira Livera D, Leshuk T, Peru KM, Headley JV, Gu F. Structure-reactivity relationship of naphthenic acids in the photocatalytic degradation process. CHEMOSPHERE 2018; 200:180-190. [PMID: 29482010 DOI: 10.1016/j.chemosphere.2018.02.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 02/06/2018] [Accepted: 02/08/2018] [Indexed: 06/08/2023]
Abstract
Bitumen extraction in Canada's oil sands generates oil sands process-affected water (OSPW) as a toxic by-product. Naphthenic acids (NAs) contribute to the water's toxicity, and treatment methods may need to be implemented to enable safe discharge. Heterogeneous photocatalysis is a promising advanced oxidation process (AOP) for OSPW remediation, however, its successful implementation requires understanding of the complicated relationship between structure and reactivity of NAs. This work aimed to study the effect of various structural properties of model compounds on the photocatalytic degradation kinetics via high resolution mass spectrometry (HRMS), including diamondoid structures, heteroatomic species, and degree of unsaturation. The rate of photocatalytic treatment increased significantly with greater structural complexity, namely with carbon number, aromaticity and degree of cyclicity, properties that render particular NAs recalcitrant to biodegradation. It is hypothesized that a superoxide radical-mediated pathway explains these observations and offers additional benefits over traditional hydroxyl radical-based AOPs. Detailed structure-reactivity investigations of NAs in photocatalysis have not previously been undertaken, and the results described herein illustrate the potential benefit of combining photocatalysis and biodegradation as a complete OSPW remediation technology.
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Affiliation(s)
- Diogo de Oliveira Livera
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada; Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Tim Leshuk
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada; Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Kerry M Peru
- Water Science and Technology Directorate, Environment and Climate Change Canada, Saskatoon, Saskatchewan S7N 3H5, Canada
| | - John V Headley
- Water Science and Technology Directorate, Environment and Climate Change Canada, Saskatoon, Saskatchewan S7N 3H5, Canada
| | - Frank Gu
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada; Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
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13
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Yang Z, Zhang G, Hollebone BP, Brown CE, Yang C, Lambert P, Wang Z, Landriault M, Shah K. Fate of oxygenated intermediates in solar irradiated diluted bitumen mixed with saltwater. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 231:622-634. [PMID: 28843901 DOI: 10.1016/j.envpol.2017.08.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 08/04/2017] [Accepted: 08/11/2017] [Indexed: 06/07/2023]
Abstract
Two types of diluted bitumen (dilbit) and a light crude oil spiked onto the surface of saltwater were irradiated with natural solar light in Ottawa to assess the impact of sunlight to the fate of oxygenated intermediates. Oxygenated components, including carbonyl polycyclic aromatic hydrocarbons (PAHs) and acidic polar fractions (naphthenic acid fraction compounds, NAFCs), were identified after periods of solar exposure under both winter and summer conditions. Carbonyl PAHs and NAFCs were formed in both seasons; however, light crude and summer irradiation produced higher abundance of them than dilbits and winter exposure. The formed NAFCs were abundant with the congeners containing a heteroatom of oxygen only (Oo species), accompanied by the minor amounts of sulfur- and nitrogen-containing acids. The produced Oo species were predominant with the congeners with light molecular weight, high degree of saturation and heavy oxygen numbers. For both carbonyl PAHs and NAFCs, their abundance continually increased throughout the period of winter exposure. In the summer, some carbonyl PAHs and all Oo species increased during the early exposure period; then they decreased with continued exposure for most oils, illustrating their transitional nature. Oxygenated intermediates thus appear to have been created through the photo-oxidation of non-to medium-polar petroleum hydrocarbons or the intermediates of aldehydes or ketones (O1). Oil properties, the duration of exposure, exposure season and the chemical structure of these intermediates are critical factors controlling their fate through photo-oxidation. The observed chemical changes highlight the effects of sunlight on the potential behavior, fate and impact of spilled oil, with the creation of new resin group compounds and the reduction of aromatics and saturates. These results also imply that the ecological effects of spilled oil, after ageing in sunlight, depend on the specific oil involved and the environmental conditions.
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Affiliation(s)
- Zeyu Yang
- Emergencies Science and Technology Section, Science and Technology Branch, Environment and Climate Change Canada, Ottawa, ON, K1A0H3, Canada.
| | - Gong Zhang
- Emergencies Science and Technology Section, Science and Technology Branch, Environment and Climate Change Canada, Ottawa, ON, K1A0H3, Canada
| | - Bruce P Hollebone
- Emergencies Science and Technology Section, Science and Technology Branch, Environment and Climate Change Canada, Ottawa, ON, K1A0H3, Canada
| | - Carl E Brown
- Emergencies Science and Technology Section, Science and Technology Branch, Environment and Climate Change Canada, Ottawa, ON, K1A0H3, Canada
| | - Chun Yang
- Emergencies Science and Technology Section, Science and Technology Branch, Environment and Climate Change Canada, Ottawa, ON, K1A0H3, Canada
| | - Patrick Lambert
- Emergencies Science and Technology Section, Science and Technology Branch, Environment and Climate Change Canada, Ottawa, ON, K1A0H3, Canada
| | - Zhendi Wang
- Emergencies Science and Technology Section, Science and Technology Branch, Environment and Climate Change Canada, Ottawa, ON, K1A0H3, Canada
| | - Mike Landriault
- Emergencies Science and Technology Section, Science and Technology Branch, Environment and Climate Change Canada, Ottawa, ON, K1A0H3, Canada
| | - Keval Shah
- Emergencies Science and Technology Section, Science and Technology Branch, Environment and Climate Change Canada, Ottawa, ON, K1A0H3, Canada
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14
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Saranjampour P, Armbrust KL, Marx BD. Assessing the hydroxyl radical and volatilization roles in aquatic fate estimations of sulfur heterocycles: Dibenzothiophene derivatives. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2017; 36:1998-2004. [PMID: 28109135 DOI: 10.1002/etc.3745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 12/16/2016] [Accepted: 01/19/2017] [Indexed: 06/06/2023]
Abstract
Polycyclic aromatic sulfur heterocycles (PASHs) and their alkyl derivatives can be released into aquatic systems via crude oil spills or runoff from petroleum-treated areas, such as asphalt. Dibenzothiophene (DBT) and its derivatives (C1-DBT, C2-DBT, and C4-DBT) were chosen as model compounds to investigate the relative impact of volatilization and hydroxyl radical degradation on estimates of their overall dissipation after entry into aquatic ecosystems as a function of depth using the exposure analysis modeling system (EXAMS). The hydroxyl radical rate constant (K · OH ) and Henry's law constant of PASHs were determined in distilled water. The analogue C1-DBT reacted fastest with · OH relative to other PASHs. The C2-DBT and C4-DBT analogues had higher Henry's law constants compared with other derivatives. Steric hindrance by alkyl substituents on the sulfur moiety most strongly impacted measured rate and Henry's law constants between DBT and individual alkyl derivatives. These steric effects do not appear to be considered in the physical property estimation software EPI Suite. Simulated dissipation of PASHs using EXAMS suggests that volatilization is a dominant fate pathway for the higher molecular weight and less polar C2-DBT and C4-DBT at all depths and DBT and C1-DBT at 0.1-m. However, model scenarios suggest that hydroxyl radical degradation may significantly contribute to the degradation of more polar DBT and C1-DBT at 1-m and 2-m depths. Environ Toxicol Chem 2017;36:1998-2004. © 2017 SETAC.
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Affiliation(s)
- Parichehr Saranjampour
- Department of Environmental Sciences, College of the Coast and Environment, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Kevin L Armbrust
- Department of Environmental Sciences, College of the Coast and Environment, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Brian D Marx
- Department of Experimental Statistics, Louisiana State University, Baton Rouge, Louisiana, USA
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15
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Qi Y, Luo R, Schrader W, Volmer DA. Application of phase correction to improve the characterization of photooxidation products of lignin using 7 Tesla Fourier-transform ion cyclotron resonance mass spectrometry. Facets (Ott) 2017. [DOI: 10.1139/facets-2016-0069] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Lignin is the second most abundant natural biopolymer and potentially a valuable alternative energy source for conventional fossil fuels. In this study, Fourier-transform ion cyclotron resonance-mass spectrometry (FTICR-MS) in conjunction with phase correction was applied to study photooxidation products of lignin using a 7 Tesla (T) mass spectrometer. The application of 7 T FTICR-MS has often been inadequate for the analysis of complex natural organic matter because of insufficient resolving power as compared with high-field FTICR, which led to incorrect assignments of elemental formulae and discontinuous plots in graphical and statistical analyses. Here, the application of phase correction to the FTICR mass spectra of lignin oxidation products greatly improved the spectral quality, and thus, readily permitted characterization of photooxidation processes of lignin compounds under simulated solar radiation conditions.
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Affiliation(s)
- Yulin Qi
- Institute of Bioanalytical Chemistry, Saarland University, D-66123 Saarbrücken, Germany
| | - Ruoji Luo
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim an der Ruhr, Germany
| | - Wolfgang Schrader
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim an der Ruhr, Germany
| | - Dietrich A. Volmer
- Institute of Bioanalytical Chemistry, Saarland University, D-66123 Saarbrücken, Germany
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16
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Zhang Y, Klamerth N, Chelme-Ayala P, Gamal El-Din M. Comparison of Nitrilotriacetic Acid and [S,S]-Ethylenediamine-N,N'-disuccinic Acid in UV-Fenton for the Treatment of Oil Sands Process-Affected Water at Natural pH. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:10535-10544. [PMID: 27588553 DOI: 10.1021/acs.est.6b03050] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The application of UV-Fenton processes with two chelating agents, nitrilotriacetic acid (NTA) and [S,S]-ethylenediamine-N,N'-disuccinic acid ([S,S]-EDDS), for the treatment of oil sands process-affected water (OSPW) at natural pH was investigated. The half-wave potentials of Fe(III/II)NTA and Fe(III/II)EDDS and the UV photolysis of the complexes in Milli-Q water and OSPW were compared. Under optimum conditions, UV-NTA-Fenton exhibited higher efficiency than UV-EDDS-Fenton in the removal of acid extractable organic fraction (66.8% for the former and 50.0% for the latter) and aromatics (93.5% for the former and 74.2% for the latter). Naphthenic acids (NAs) removals in the UV-NTA-Fenton process (98.4%, 86.0%, and 81.0% for classical NAs, NAs + O (oxidized NAs with one additional oxygen atom), and NAs + 2O (oxidized NAs with two additional oxygen atoms), respectively) under the experimental conditions were much higher than those in the UV-H2O2 (88.9%, 48.7%, and 54.6%, correspondingly) and NTA-Fenton (69.6%, 35.3%, and 44.2%, correspondingly) processes. Both UV-NTA-Fenton and UV-EDDS-Fenton processes presented promoting effect on the acute toxicity of OSPW toward Vibrio fischeri. No significant change of the NTA toxicity occurred during the photolysis of Fe(III)NTA; however, the acute toxicity of EDDS increased as the photolysis of Fe(III)EDDS proceeded. NTA is a much better agent than EDDS for the application of UV-Fenton process in the treatment of OSPW.
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Affiliation(s)
- Ying Zhang
- Department of Civil and Environmental Engineering, University of Alberta , Edmonton, Alberta Canada T6G 1H9
| | - Nikolaus Klamerth
- Department of Civil and Environmental Engineering, University of Alberta , Edmonton, Alberta Canada T6G 1H9
| | - Pamela Chelme-Ayala
- Department of Civil and Environmental Engineering, University of Alberta , Edmonton, Alberta Canada T6G 1H9
| | - Mohamed Gamal El-Din
- Department of Civil and Environmental Engineering, University of Alberta , Edmonton, Alberta Canada T6G 1H9
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17
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Qi Y, Hempelmann R, Volmer DA. Shedding light on the structures of lignin compounds: photo-oxidation under artificial UV light and characterization by high resolution mass spectrometry. Anal Bioanal Chem 2016; 408:8203-8210. [PMID: 27640206 DOI: 10.1007/s00216-016-9928-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 08/19/2016] [Accepted: 09/06/2016] [Indexed: 10/21/2022]
Abstract
Lignin is the second most abundant natural polymer and a promising alternative energy source for conventional fossil fuels. In this study, we investigated transformations of lignin compounds under artificial UV light conditions at the molecular level. Such light-induced changes of composition profiles in nature after sun exposure have been studied for crude oil in the petroleomics field. We applied a similar high resolution mass spectrometry experimental strategy to lignin and demonstrated various data processing methods to reveal the characteristic differences between the extremely complex data sets of two sample sets, one native control before and one sample after photo-irradiation, using Fourier transform ion cyclotron resonance-mass spectrometry. Graphical abstract Kendrick mass defect versus nominal Kendrick mass for mass spectra of a control and UV-oxidized lignin sample.
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Affiliation(s)
- Yulin Qi
- Institute of Bioanalytical Chemistry, Saarland University, 66123, Saarbrücken, Germany
| | - Rolf Hempelmann
- Institute of Physical Chemistry, Saarland University, Saarbrücken, Germany
| | - Dietrich A Volmer
- Institute of Bioanalytical Chemistry, Saarland University, 66123, Saarbrücken, Germany.
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18
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Cai B, Ma J, Yan G, Dai X, Li M, Guo S. Comparison of phytoremediation, bioaugmentation and natural attenuation for remediating saline soil contaminated by heavy crude oil. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2016.04.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Leshuk T, Wong T, Linley S, Peru KM, Headley JV, Gu F. Solar photocatalytic degradation of naphthenic acids in oil sands process-affected water. CHEMOSPHERE 2016; 144:1854-1861. [PMID: 26539710 DOI: 10.1016/j.chemosphere.2015.10.073] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 09/23/2015] [Accepted: 10/18/2015] [Indexed: 06/05/2023]
Abstract
Bitumen mining in the Canadian oil sands creates large volumes of oil sands process-affected water (OSPW), the toxicity of which is due in part to naphthenic acids (NAs) and other acid extractable organics (AEO). The objective of this work was to evaluate the potential of solar photocatalysis over TiO2 to remove AEO from OSPW. One day of photocatalytic treatment under natural sunlight (25 MJ/m(2) over ∼14 h daylight) eradicated AEO from raw OSPW, and acute toxicity of the OSPW toward Vibrio fischeri was eliminated. Nearly complete mineralization of organic carbon was achieved within 1-7 day equivalents of sunlight exposure, and degradation was shown to proceed through a superoxide-mediated oxidation pathway. High resolution mass spectrometry (HRMS) analysis of oxidized intermediate compounds indicated preferential degradation of the heavier and more cyclic NAs (higher number of double bond equivalents), which are the most environmentally persistent fractions. The photocatalyst was shown to be recyclable for multiple uses, and thus solar photocatalysis may be a promising "green" advanced oxidation process (AOP) for OSPW treatment.
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Affiliation(s)
- Tim Leshuk
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada; Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Timothy Wong
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Stuart Linley
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada; Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Kerry M Peru
- Water Science and Technology Directorate, Environment Canada, 11 Innovation Blvd, Saskatoon, Saskatchewan, S7N 3H5, Canada
| | - John V Headley
- Water Science and Technology Directorate, Environment Canada, 11 Innovation Blvd, Saskatoon, Saskatchewan, S7N 3H5, Canada
| | - Frank Gu
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada; Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.
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20
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Bacosa HP, Liu Z, Erdner DL. Natural Sunlight Shapes Crude Oil-Degrading Bacterial Communities in Northern Gulf of Mexico Surface Waters. Front Microbiol 2015; 6:1325. [PMID: 26648916 PMCID: PMC4664628 DOI: 10.3389/fmicb.2015.01325] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 11/11/2015] [Indexed: 01/06/2023] Open
Abstract
Following the Deepwater Horizon (DWH) spill in 2010, an enormous amount of oil was observed in the deep and surface waters of the northern Gulf of Mexico. Surface waters are characterized by intense sunlight and high temperature during summer. While the oil-degrading bacterial communities in the deep-sea plume have been widely investigated, the effect of natural sunlight on those in oil polluted surface waters remains unexplored to date. In this study, we incubated surface water from the DWH site with amendments of crude oil, Corexit dispersant, or both for 36 days under natural sunlight in the northern Gulf of Mexico. The bacterial community was analyzed over time for total abundance, density of alkane and polycyclic aromatic hydrocarbon degraders, and community composition via pyrosequencing. Our results showed that, for treatments with oil and/or Corexit, sunlight significantly reduced bacterial diversity and evenness and was a key driver of shifts in bacterial community structure. In samples containing oil or dispersant, sunlight greatly reduced abundance of the Cyanobacterium Synechococcus but increased the relative abundances of Alteromonas, Marinobacter, Labrenzia, Sandarakinotalea, Bartonella, and Halomonas. Dark samples with oil were represented by members of Thalassobius, Winogradskyella, Alcanivorax, Formosa, Pseudomonas, Eubacterium, Erythrobacter, Natronocella, and Coxiella. Both oil and Corexit inhibited the Candidatus Pelagibacter with or without sunlight exposure. For the first time, we demonstrated the effects of light in structuring microbial communities in water with oil and/or Corexit. Overall, our findings improve understanding of oil pollution in surface water, and provide unequivocal evidence that sunlight is a key factor in determining bacterial community composition and dynamics in oil polluted marine waters.
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Affiliation(s)
- Hernando P Bacosa
- Marine Science Institute, The University of Texas at Austin Port Aransas, TX, USA
| | - Zhanfei Liu
- Marine Science Institute, The University of Texas at Austin Port Aransas, TX, USA
| | - Deana L Erdner
- Marine Science Institute, The University of Texas at Austin Port Aransas, TX, USA
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21
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Islam A, Kim D, Yim UH, Shim WJ, Kim S. Structure-dependent degradation of polar compounds in weathered oils observed by atmospheric pressure photo-ionization hydrogen/deuterium exchange ultrahigh resolution mass spectrometry. JOURNAL OF HAZARDOUS MATERIALS 2015; 296:93-100. [PMID: 25913675 DOI: 10.1016/j.jhazmat.2015.04.042] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 04/01/2015] [Accepted: 04/13/2015] [Indexed: 06/04/2023]
Abstract
The resin fractions of fresh mixtures of three oils spilled during the M/V Hebei Spirit oil spill, as well as weathered oils collected at weathering stages II and IV from the oil spill site were analyzed and compared by atmospheric pressure photo-ionization hydrogen/deuterium exchange mass spectrometry (HDX MS). The significantly decreased abundance of N(+) and [N-H+D](+) ions suggested that secondary and tertiary amine-containing compounds were preferentially degraded during the early stage of weathering. [N+H](+) and [N+D](+) ions previously attributed to pyridine-type compounds degraded more slowly than secondary and tertiary amine-containing compounds. The preferential degradation of nitrogen-containing compounds was confirmed by photo-degradation experiments using 15 standard compounds. In addition, significant increases of [S1O1+H](+) and [S1O1+D](+) ions with higher DBE values were observed from fresh oil mixtures as compared to stages II and IV samples, and that could be linked with the decrease of higher DBE compounds of the S1 class. This study presented convincing arguments and evidence demonstrating that secondary and tertiary amines were more vulnerable to photo-degradation than compounds containing pyridine, and hence, preferential degradation depending on chemical structures must be considered in the production of hazardous or toxic components.
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Affiliation(s)
- Ananna Islam
- Kyungpook National University, Department of Chemistry, Daegu 702-701, Republic of Korea
| | - Donghwi Kim
- Kyungpook National University, Department of Chemistry, Daegu 702-701, Republic of Korea
| | - Un Hyuk Yim
- Oil and POPs Research Group, Korea Institute of Ocean Science and Technology, KIOST, Geoje 656-834, Republic of Korea
| | - Won Joon Shim
- Oil and POPs Research Group, Korea Institute of Ocean Science and Technology, KIOST, Geoje 656-834, Republic of Korea
| | - Sunghwan Kim
- Kyungpook National University, Department of Chemistry, Daegu 702-701, Republic of Korea; Green Nano Center, Department of Chemistry, Daegu 702-701, Republic of Korea.
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22
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Bacosa HP, Erdner DL, Liu Z. Differentiating the roles of photooxidation and biodegradation in the weathering of Light Louisiana Sweet crude oil in surface water from the Deepwater Horizon site. MARINE POLLUTION BULLETIN 2015; 95:265-272. [PMID: 25899525 DOI: 10.1016/j.marpolbul.2015.04.005] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 03/19/2015] [Accepted: 04/09/2015] [Indexed: 06/04/2023]
Abstract
We determined the contributions of photooxidation and biodegradation to the weathering of Light Louisiana Sweet crude oil by incubating surface water from the Deepwater Horizon site under natural sunlight and temperature conditions. N-alkane biodegradation rate constants were ca. ten-fold higher than the photooxidation rate constants. For the 2-3 ring and 4-5 ring polycyclic aromatic hydrocarbons (PAHs), photooxidation rate constants were 0.08-0.98day(-1) and 0.01-0.07day(-1), respectively. The dispersant Corexit enhanced degradation of n-alkanes but not of PAHs. Compared to biodegradation, photooxidation increased transformation of 4-5 ring PAHs by 70% and 3-4 ring alkylated PAHs by 36%. For the first time we observed that sunlight inhibited biodegradation of pristane and phytane, possibly due to inhibition of the bacteria that can degrade branched-alkanes. This study provides quantitative measures of oil degradation under relevant field conditions crucial for understanding and modeling the fate of spilled oil in the northern Gulf of Mexico.
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Affiliation(s)
- Hernando P Bacosa
- Marine Science Institute, The University of Texas at Austin, 750 Channel View Drive, Port Aransas, TX 78373-5015, United States.
| | - Deana L Erdner
- Marine Science Institute, The University of Texas at Austin, 750 Channel View Drive, Port Aransas, TX 78373-5015, United States
| | - Zhanfei Liu
- Marine Science Institute, The University of Texas at Austin, 750 Channel View Drive, Port Aransas, TX 78373-5015, United States
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23
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Andersson JT, Achten C. Time to Say Goodbye to the 16 EPA PAHs? Toward an Up-to-Date Use of PACs for Environmental Purposes. Polycycl Aromat Compd 2015; 35:330-354. [PMID: 26823645 PMCID: PMC4714241 DOI: 10.1080/10406638.2014.991042] [Citation(s) in RCA: 336] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 11/19/2014] [Indexed: 11/08/2022]
Abstract
The 16 EPA PAHs have played an exceptionally large role above all in environmental and analytical sciences in the last 40 years, but now there are good reasons to question their utility in many circumstances even though their use is so established and comfortable. Here we review the reasons why the list has been so successful and why sometimes it is seen as less relevant. Three groups of polycyclic aromatic compounds (PAC) are missing: larger and highly relevant PAHs, alkylated PACs, and compounds containing heteroatoms. Attempts to improve the situation for certain matrixes are known and here: (1) an updated list of PAHs (including the 16 EPA PAHs) for the evaluation of the toxicity in the environment (40 EnvPAHs); (2) a list of 23 NSO-heterocyclic compounds and 6 heterocyclic metabolites; and (3) lists of 10 oxy-PAHs and 10 nitro-PAHs are proposed for practical use in the future. A discussion in the scientific community about these lists is invited. Although the state of knowledge has improved dramatically since the introduction of the 16 EPA PAHs in the 1970s, this summary also shows that more research is needed about the toxicity, occurrence in the environment and chemical analysis, particularly of alkylated PAHs, higher molecular weight PAHs and substituted PACs such as amino-PAHs, cyano-PAHs, etc.. We also suggest that a long overdue discussion of an update of regulatory environmental PAH analysis is initiated.
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Affiliation(s)
- Jan T. Andersson
- Institute of Inorganic and Analytical Chemistry, University of Muenster, Muenster, Germany
| | - Christine Achten
- Institute of Geology and Palaeontology – Applied Geology, University of Muenster, Muenster, Germany
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Shankar R, Shim WJ, An JG, Yim UH. A practical review on photooxidation of crude oil: laboratory lamp setup and factors affecting it. WATER RESEARCH 2015; 68:304-315. [PMID: 25462738 DOI: 10.1016/j.watres.2014.10.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 10/03/2014] [Accepted: 10/04/2014] [Indexed: 06/04/2023]
Abstract
After an oil spill, crude oil in the marine environment is affected by a variety of processes collectively called weathering. Photooxidation induced by ultraviolet (UV) light from the sun is one of the most significant processes of long-term weathering that changes the chemical nature of oil. Experimental studies on photooxidation in the natural environment are generally not practicable due to the variability of factors that are more readily controlled in a laboratory. The emission spectra and irradiance of artificial lamps are critical factors for simulating sunlight, and the process of acceleration should be differentiated from simulation. We present a comprehensive review of the exposure conditions affecting in vitro photooxidation studies, including the types of lamps, their spectra and irradiance levels and maintenance conditions. The importance of xenon arc, metal halide along with mercury–xenon, high-pressure mercury lamps and other lamps with respect to their spectral characteristics is discussed and the selection guide is provided. A brief discussion on other factors affecting photooxidation rates and outcomes, such as photosensitisers, photodegraders, solvents and the synergistic effects of compounds is also given.
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Affiliation(s)
- Ravi Shankar
- Oil & POPs Research Group, Korea Institute of Ocean Science & Technology, Geoje 656-834, Republic of Korea
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25
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Chakravarthi N, Gunasekar K, Jin SH, Lee JH. Synthesis and Photovoltaic Properties of 2D π-Conjugated Polymers Based on Alkylbenzothiophene Substituted Benzodithiophene Donor Unit with Titanium Sub-Oxide (TiOX) as an Interlayer in the Bulk Heterojunction Device Structure. J Inorg Organomet Polym Mater 2014. [DOI: 10.1007/s10904-014-0108-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Zito P, Chen H, Podgorski DC, McKenna AM, Tarr MA. Sunlight creates oxygenated species in water-soluble fractions of Deepwater Horizon oil. JOURNAL OF HAZARDOUS MATERIALS 2014; 280:636-643. [PMID: 25222929 DOI: 10.1016/j.jhazmat.2014.08.059] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Revised: 08/13/2014] [Accepted: 08/27/2014] [Indexed: 06/03/2023]
Abstract
In order to assess the impact of sunlight on oil fate, Macondo well oil from the Deepwater Horizon (DWH) rig was mixed with pure water and irradiated with simulated sunlight. After irradiation, the water-soluble organics (WSO) from the dark and irradiated samples were extracted and characterized by ultrahigh resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Liquid-liquid extraction yielded two fractions from dark and irradiated water/oil mixtures: acidic WSOs (negative-ion electrospray (ESI)), and base/neutral WSOs (positive-ion ESI) coupled to FT-ICR MS to catalog molecular-level transformations that occur to Macondo-derived WSOs after solar irradiation. Such direct measure of oil phototransformation has not been previously reported. The most abundant heteroatom class detected in the irradiated WSO acid fractions correspond to molecules that contain five oxygens (O5), while the most abundant acids in the dark samples contain two oxygen atoms per molecule (O2). Higher-order oxygen classes (O5-O9) were abundant in the irradiated samples, but <1.5% relative abundance in the dark sample. The increased abundance of higher-order oxygen classes in the irradiated samples relative to the dark samples indicates that photooxidized components of the Macondo crude oil become water-soluble after irradiation. The base/neutral fraction showed decreased abundance of pyridinic nitrogen (N1) concurrent with an increased abundance of N1Ox classes after irradiation. The predominance of higher-order oxygen classes indicates that multiple photochemical pathways exist that result in oxidation of petroleum compounds.
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Affiliation(s)
- Phoebe Zito
- Department of Chemistry, University of New Orleans, New Orleans, LA 70148, United States
| | - Huan Chen
- National High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, FL 32310-4005, United States
| | - David C Podgorski
- National High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, FL 32310-4005, United States; Future Fuels Institute, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, FL 32310-4005, United States
| | - Amy M McKenna
- National High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, FL 32310-4005, United States
| | - Matthew A Tarr
- Department of Chemistry, University of New Orleans, New Orleans, LA 70148, United States.
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Antle P, Zeigler C, Robbat A. Retention behavior of alkylated polycyclic aromatic sulfur heterocycles on immobilized ionic liquid stationary phases. J Chromatogr A 2014; 1361:255-64. [DOI: 10.1016/j.chroma.2014.08.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 07/29/2014] [Accepted: 08/03/2014] [Indexed: 10/24/2022]
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28
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Hegazi AH, Fathalla EM, Andersson JT. Weathering trend characterization of medium-molecular weight polycyclic aromatic disulfur heterocycles by Fourier transform ion cyclotron resonance mass spectrometry. CHEMOSPHERE 2014; 111:266-271. [PMID: 24997927 DOI: 10.1016/j.chemosphere.2014.04.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 03/21/2014] [Accepted: 04/01/2014] [Indexed: 06/03/2023]
Abstract
Different weathering factors act to change petroleum composition once it is spilled into the environment. n-Alkanes, biomarkers, low-molecular weight polyaromatic hydrocarbons and sulfur heterocycles compositional changing in the environment have been extensively studied by different researchers and many parameters have been used for oil source identification and monitoring of weathering and biological degradation processes. In this work, we studied the fate of medium-molecular weight polycyclic aromatic disulfur heterocycles (PAS2Hs), up to ca. 900Da, of artificially weathered Flotta North Sea crude oil by ultra high-resolution Fourier transform ion cyclotron resonance mass spectrometry. It was found that PAS2Hs in studied crude oil having double bond equivalents (DBE) from 5 to 8 with a mass range from ca 316 to 582Da were less influenced even after six months artificial weathering experiment. However, compounds having DBEs 12, 11 and 10 were depleted after two, four and six months weathering, respectively. In addition, DBE 9 series was more susceptible to weathering than those of DBE 7 and 8.
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Affiliation(s)
- Abdelrahman H Hegazi
- Chemistry Department, Faculty of Science, Alexandria University, P.O. Box 426, Alexandria 21321, Egypt; Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstrasse 30, 48149 Münster, Germany; Chemistry Department, Faculty of Science, Taibah University, P.O. Box 30002, Al-Madinah Al-Munawarah, Saudi Arabia.
| | - Eiman M Fathalla
- Chemistry Department, Faculty of Science, Alexandria University, P.O. Box 426, Alexandria 21321, Egypt; Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstrasse 30, 48149 Münster, Germany; Chemistry Department, Faculty of Science, Taibah University, P.O. Box 30002, Al-Madinah Al-Munawarah, Saudi Arabia
| | - Jan T Andersson
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstrasse 30, 48149 Münster, Germany
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29
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Shu Z, Li C, Belosevic M, Bolton JR, El-Din MG. Application of a solar UV/chlorine advanced oxidation process to oil sands process-affected water remediation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:9692-9701. [PMID: 25051215 DOI: 10.1021/es5017558] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The solar UV/chlorine process has emerged as a novel advanced oxidation process for industrial and municipal wastewaters. Currently, its practical application to oil sands process-affected water (OSPW) remediation has been studied to treat fresh OSPW retained in large tailings ponds, which can cause significant adverse environmental impacts on ground and surface waters in Northern Alberta, Canada. Degradation of naphthenic acids (NAs) and fluorophore organic compounds in OSPW was investigated. In a laboratory-scale UV/chlorine treatment, the NAs degradation was clearly structure-dependent and hydroxyl radical-based. In terms of the NAs degradation rate, the raw OSPW (pH ∼ 8.3) rates were higher than those at an alkaline condition (pH = 10). Under actual sunlight, direct solar photolysis partially degraded fluorophore organic compounds, as indicated by the qualitative synchronous fluorescence spectra (SFS) of the OSPW, but did not impact NAs degradation. The solar/chlorine process effectively removed NAs (75-84% removal) and fluorophore organic compounds in OSPW in the presence of 200 or 300 mg L(-1) OCl(-). The acute toxicity of OSPW toward Vibrio fischeri was reduced after the solar/chlorine treatment. However, the OSPW toxicity toward goldfish primary kidney macrophages after solar/chlorine treatment showed no obvious toxicity reduction versus that of untreated OSPW, which warrants further study for process optimization.
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Affiliation(s)
- Zengquan Shu
- Department of Civil and Environmental Engineering, University of Alberta , 9105 116th Street, Edmonton, Alberta, Canada T6G 2W2
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30
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Radović JR, Aeppli C, Nelson RK, Jimenez N, Reddy CM, Bayona JM, Albaigés J. Assessment of photochemical processes in marine oil spill fingerprinting. MARINE POLLUTION BULLETIN 2014; 79:268-277. [PMID: 24355571 DOI: 10.1016/j.marpolbul.2013.11.029] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 11/18/2013] [Accepted: 11/25/2013] [Indexed: 06/03/2023]
Abstract
Understanding weathering processes plays a critical role in oil spill forensics, which is based on the comparison of the distributions of selected compounds assumed to be recalcitrant and/or have consistent weathering transformations. Yet, these assumptions are based on limited laboratory and oil-spill studies. With access to additional sites that have been oiled by different types of oils and exposures, there is a great opportunity to expand on our knowledge about these transformations. Here, we demonstrate the effects of photooxidation on the overall composition of spilled oils caused by natural and simulated sunlight, and particularly on the often used polycyclic aromatic hydrocarbons (PAHs) and the biomarker triaromatic steranes (TAS). Both laboratory and field data from oil released from the Macondo well oil following the Deepwater Horizon disaster (2010), and heavy fuel-oil from the Prestige tanker spill (2002) have been obtained to improve the data interpretation of the typical fingerprinting methodology.
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Affiliation(s)
- Jagoš R Radović
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona 08034, Spain; Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
| | - Christoph Aeppli
- Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA; Bigelow Laboratory for Ocean Sciences, East Boothbay, ME 04544, USA
| | - Robert K Nelson
- Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
| | - Núria Jimenez
- Federal Institute for Geosciences and Natural Resources (BGR), Stilleweg 2, Hannover D-30655, Germany
| | - Christopher M Reddy
- Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
| | - Josep M Bayona
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona 08034, Spain
| | - Joan Albaigés
- Department of Environmental Chemistry, IDAEA-CSIC, Barcelona 08034, Spain.
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31
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King SM, Leaf PA, Olson AC, Ray PZ, Tarr MA. Photolytic and photocatalytic degradation of surface oil from the Deepwater Horizon spill. CHEMOSPHERE 2014; 95:415-422. [PMID: 24139429 DOI: 10.1016/j.chemosphere.2013.09.060] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Revised: 08/30/2013] [Accepted: 09/10/2013] [Indexed: 06/02/2023]
Abstract
The photochemical behavior of Deepwater Horizon oil collected from the surface of the Gulf of Mexico was studied. Thin oil films on water were subjected to simulated sunlight, and the resulting chemical and optical changes were observed. Polycyclic aromatic hydrocarbons (PAHs) showed substantial photodegradation, with larger PAHs being more rapidly decomposed. About 60% of the fluorescence at the excitation and emission maxima was observed with 12h of simulated solar irradiation equivalent to approximately 3d of sunlight. Synchronous scan fluorescence measurements showed 80-90% loss of larger PAHs with 12h of simulated solar irradiation. Absorbance of the oil decreased by only 20% over the same time period. Alkanes showed no significant photochemical losses. After irradiation, the toxicity of water in contact with the oil significantly increased, presumably due to the release of water soluble photoproducts that were toxic. Photocatalyst addition resulted in enhanced degradation rate for PAHs, and toxicity of the aqueous layer was altered in the presence of photocatalysts added to the oil film. Photochemistry is an important pathway for degradation of large PAHs, which are typically resistant to biodegradation.
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Affiliation(s)
- Sarah M King
- Department of Chemistry, University of New Orleans, 2000 Lakeshore Drive, New Orleans, LA 70148, USA
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32
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Griffiths MT, Da Campo R, O’Connor PB, Barrow MP. Throwing Light on Petroleum: Simulated Exposure of Crude Oil to Sunlight and Characterization Using Atmospheric Pressure Photoionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. Anal Chem 2013; 86:527-34. [DOI: 10.1021/ac4025335] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Matthew T. Griffiths
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Raffaello Da Campo
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Peter B. O’Connor
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Mark P. Barrow
- Department
of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
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33
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Hegazi AH, Fathalla EM, Panda SK, Schrader W, Andersson JT. High-molecular weight sulfur-containing aromatics refractory to weathering as determined by Fourier transform ion cyclotron resonance mass spectrometry. CHEMOSPHERE 2012; 89:205-212. [PMID: 22560701 DOI: 10.1016/j.chemosphere.2012.04.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 03/29/2012] [Accepted: 04/05/2012] [Indexed: 05/31/2023]
Abstract
Biomarkers and low-molecular weight polyaromatic compounds have been extensively studied for their fate in the environment. They are used for oil spill source identification and monitoring of weathering and degradation processes. However, in some cases, the absence or presence of very low concentration of such components restricts the access of information to spill source. Here we followed the resistance of high-molecular weight sulfur-containing aromatics to the simulated weathering condition of North Sea crude oil by ultra high-resolution Fourier transform ion cyclotron resonance mass spectrometry. The sulfur aromatics in North Sea crude having double bond equivalents (DBE) from 6 to 14 with a mass range 188-674Da were less influenced even after 6 months artificial weathering. Moreover, the ratio of dibenzothiophenes (DBE 9)/naphthenodibenzothiophenes (DBE 10) was 1.30 and 1.36 in crude oil and 6 months weathered sample, respectively reflecting its weathering stability. It also showed some differences within other oils. Hence, this ratio can be used as a marker of the studied crude and accordingly may be applied for spilled oil source identification in such instances where the light components have already been lost due to environmental influences.
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Affiliation(s)
- Abdelrahman H Hegazi
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
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34
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Fathalla EM, Andersson JT. Products of polycyclic aromatic sulfur heterocycles in oil spill photodegradation. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2011; 30:2004-2012. [PMID: 21713971 DOI: 10.1002/etc.607] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 06/10/2011] [Accepted: 06/13/2011] [Indexed: 05/31/2023]
Abstract
Photo-oxidation is a potentially significant process in the degradation of crude oil spilled in the environment. The polycyclic aromatic sulfur heterocycles (PASHs) in an Egyptian crude oil (0.8 % sulfur) were photo-oxidized as a film on the surface of water in the presence of anthraquinone as photosensitizer under simulated solar irradiation. The polar photoproducts were characterized using negative ion electrospray ionization with time of flight mass spectrometry and, after trimethylsilylation, gas chromatography with mass spectrometry. The photoproducts identified revealed the presence of a large variety of sulfonic acids, aliphatic and aromatic acids, and alcohols. The data also give new information on the substituents of the aromatic compounds in the unexposed oil and indicate the presence of cyclohexyl substituted aromatic compounds.
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Affiliation(s)
- Eiman M Fathalla
- Institute of Inorganic and Analytical Chemistry, University of Muenster, Muenster, Germany
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35
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Samokhvalov A. Heterogeneous photocatalytic reactions of sulfur aromatic compounds. Chemphyschem 2011; 12:2870-85. [PMID: 21809426 DOI: 10.1002/cphc.201100101] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Revised: 06/09/2011] [Indexed: 11/10/2022]
Abstract
Sulfur aromatic compounds, such as mono-, di-, tri-, and tetraalkyl-substituted thiophene, benzothiophenes, dibenzothiophenes, are the molecular components of many fossils (petroleum, oil shale, tar sands, bitumen). Structural units of natural, cross-linked heteroaromatic polymers present in brown coals, turf, and soil are similar to those of sulfur aromatic compounds. Many sulfur aromatic compounds are found in the streams of petroleum refining and upgrading (naphthas, gas oils) and in the consumer products (gasoline, diesel, jet fuels, heating fuels). Besides fossils, the structural fragments of sulfur aromatic compounds are present in molecules of certain organic semiconductors, pesticides, small molecule drugs, and in certain biomolecules present in human body (pheomelanin pigments). Photocatalysis is the frontier area of physical chemistry that studies chemical reactions initiated by absorption of photons by photocatalysts, that is, upon electronic rather than thermal activation, under "green" ambient conditions. This review provides systematization and critical review of the fundamental chemical and physicochemical information on heterogeneous photocatalysis of sulfur aromatic compounds accumulated in the last 20-30 years. Specifically, the following topics are covered: physicochemical properties of sulfur aromatic compounds, major classes of heterogeneous photocatalysts, mechanisms and reactive intermediates of photocatalytic reactions of sulfur aromatic compounds, and the selectivity of these reactions. Quantum chemical calculations of properties and structures of sulfur aromatic compounds, their reactive intermediates, and the structure of adsorption complexes formed on the surface of the photocatalysts are also discussed.
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