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Benz PP, Zito P, Osborn E, Goranov AI, Hatcher PG, Seivert MD, Jeffrey WH. Effects of burning and photochemical degradation of Macondo surrogate oil on its composition and toxicity. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2024; 26:1205-1215. [PMID: 38842096 DOI: 10.1039/d4em00023d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Petroleum products in the environment can produce significant toxicity through photochemically driven processes. Burning surface oil and photochemical degradation were two mechanisms for oil removal after the Deepwater Horizon (DWH) oil spill in the Gulf of Mexico. After burning, residual oil remains in the environment and may undergo further weathering, a poorly understood fate. Although photochemistry was a major degradation pathway of the DWH oil, its effect on burned oil residue in the environment is under studied. Here, we ignited Macondo surrogate crude oil and allowed it to burn to exhaustion. Water-accommodated fractions (WAFs) of the burn residue were created in full sunlight to determine the effects of photochemical weathering on the burned oil residue. Our findings show that increased dissolved organic carbon concentrations (DOC) for the light unburned and light burned after sunlight exposure positively correlated to decreased microbial growth and production inhibition (i.e. more toxic) when compared to the dark controls. Optical and molecular analytical techniques were used to identify the classes of compounds contributing to the toxicity in the dark and light burned and dark and light unburned WAFs. After light exposure, the optical composition between the light unburned and light burned differed significantly (p < 0.05), revealing key fluorescence signatures commonly identified as crude oil degradation products. Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) analysis showed more condensed aromatic, reduced oxygenated compounds present in the light burned than in the light unburned. FT-ICR MS also showed an increase in the percent relative abundance of carboxyl-rich alicyclic molecules (CRAM) like compounds in the light burned compared to light unburned. The increase in CRAM suggests that the composition of the light burned is more photorefractory, i.e., reduced, explaining the residual toxicity observed in microbial activity. Overall, these data indicate burning removes some but not all toxic compounds, leaving behind compounds which retain considerable toxicity. This study shows that burn oil residues are photolabile breaking down further into complex reduced compounds.
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Affiliation(s)
- Pamela P Benz
- Department of Chemistry, University of West Florida, 11000 University Parkway, Pensacola, FL 32514, USA.
| | - Phoebe Zito
- Department of Chemistry, Chemical Analysis & Mass Spectrometry Facility, University of New Orleans, New Orleans, LA 70148, USA
| | - Ed Osborn
- Department of Chemistry, Chemical Analysis & Mass Spectrometry Facility, University of New Orleans, New Orleans, LA 70148, USA
| | - Aleksandar I Goranov
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529, USA
| | - Patrick G Hatcher
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529, USA
| | - Matthew D Seivert
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, GA 30602, USA
| | - Wade H Jeffrey
- Center for Environmental Diagnostics and Bioremediation, University of West Florida, 11000 University Parkway, Pensacola, FL 32514, USA
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2
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Elsheref M, Cao X, Tarr MA. Time dependence of aldehyde and ketone oxocarboxylic acid photoproduct generation from crude oil-seawater systems under solar irradiation. JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134427. [PMID: 38696957 DOI: 10.1016/j.jhazmat.2024.134427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 03/26/2024] [Accepted: 04/24/2024] [Indexed: 05/04/2024]
Abstract
Aldehyde and ketone oxocarboxylic acid photoproducts were semi-quantitated in the aqueous phase after subjecting Macondo (MC252) crude oil-seawater systems to simulated solar irradiation. Electrospray ionization tandem mass spectrometry (ESI-MS/MS) was applied after derivatizing the samples with 2,4-dinitrophenylhydrazine (DNPH). Oil-seawater was irradiated at 27.0 °C using a solar simulator for 1 to 18 h. Following irradiation, the aqueous phase was treated with DNPH to generate aldehyde-DNPH and ketone-DNPH derivatives. Solid-phase extraction enriched the samples before analyzing them using (-) ESI-MS/MS. Precursor and product ion spectra were used to select carboxylic acid-containing aldehydes and ketones and provide semi-quantitation using surrogate standards and an internal standard. Loss of m/z 44 (CO2) in the product ion spectra further confirmed the carboxylic acid character. Near-linear increases in photoproduct concentration in the aqueous phase were observed over the 18 h irradiation period. Among the aldehyde and ketone oxocarboxylic acid photoproducts studied, photoproduction rates ranged from 0.6 - 69 µmol/h·m2 of oil surface. Despite some fluctuations, a general trend of lower production rate with higher molecular weight was observed. These results demonstrate the near-linear dependence of photoproduction on irradiance and provide ranges of rates that can be applied to modeling aldehyde and ketone oxocarboxylic acid photoproduction in ocean spills. STATEMENT OF ENVIRONMENTAL IMPACT: Crude oil on seawater degrades when exposed to sunlight. Oxygenated molecules are produced, including carboxylic acid-containing aldehydes and ketones. The formation of these photoproducts from oil films behaves linearly with solar exposure time. These photoproducts are more soluble than the original oil molecules, allowing them to have increased bioavailability and potentially increased toxicity. The rate of formation of these species when oil is exposed to sunlight determines their environmental impact.
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Affiliation(s)
| | - Xian Cao
- Department of Chemistry, University of New Orleans, USA
| | - Matthew A Tarr
- Department of Chemistry, University of New Orleans, USA.
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3
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Li Z, Li Y, Li S, Ma J, Ma Q, Wang Z, Wang J, Long K, Liu X. Enhanced and Sustainable Removal of Indoor Formaldehyde by Naturally Porous Bamboo Activated Carbon Supported with MnO x: Synergistic Effect of Adsorption and Oxidation. Molecules 2024; 29:663. [PMID: 38338407 PMCID: PMC10856013 DOI: 10.3390/molecules29030663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/23/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
Novel bamboo activated carbon (BAC) catalysts decorated with manganese oxides (MnOx) were prepared with varying MnOx contents through a facile one-step redox reaction. Due to the physical anchoring effect of the natural macropore structure for catalyst active components, homogeneous MnOx nanoparticles (NPs), and high specific surface area over catalyst surface, the BAC@MnOx-N (N = 1, 2, 3, 4, 5) catalyst shows encouraging adsorption and catalytic oxidation for indoor formaldehyde (HCHO) removal at room temperature. Dynamic adsorption and catalytic activity experiments were conducted. The higher Smicro (733 m2/g) and Vmicro/Vt (82.6%) of the BAC@MnOx-4 catalyst could facilitate its excellent saturated and breakthrough adsorption capacity (5.24 ± 0.42 mg/g, 2.43 ± 0.22 mg/g). The best performer against 2 ppm HCHO is BAC@MnOx-4 catalyst, exhibiting a maximum HCHO removal efficiency of 97% for 17 h without any deactivation as RH = 0, which is higher than those of other MnOx-based catalysts. The average oxidation state and in situ DRIFTS analysis reveal that abundant oxygen vacancies on the BAC@MnOx-4 catalyst could be identified as surface-active sites of decomposing HCHO into the intermediate species (dioxymethylene and formate). This study provides a potential approach to deposit MnOx nanoparticles onto the BAC surface, and this hybrid BAC@MnOx material is promising for indoor HCHO removal at room temperature.
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Affiliation(s)
- Zhenrui Li
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Yujun Li
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Shijie Li
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Jianfeng Ma
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Qianli Ma
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Zhihui Wang
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Jiajun Wang
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
| | - Keying Long
- Guangxi Zhuang Autonomous Region Forestry Research Institute, Nanning 530002, China;
| | - Xing’e Liu
- International Centre for Bamboo and Rattan, Beijing 100102, China; (Z.L.); (Y.L.); (S.L.); (J.M.); (Q.M.); (Z.W.); (J.W.)
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China
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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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5
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Guo X, Ehindero T, Lau C, Zhao R. Impact of glycol-based solvents on indoor air quality-Artificial fog and exposure pathways of formaldehyde and various carbonyls. INDOOR AIR 2022; 32:e13100. [PMID: 36168228 DOI: 10.1111/ina.13100] [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: 01/17/2022] [Revised: 07/20/2022] [Accepted: 08/02/2022] [Indexed: 06/16/2023]
Abstract
Artificial fog is commonly employed in the entertainment industry and indoor household celebrations. The fog is generated from glycol-based solvents, which can also be found in e-cigarettes and personal care products. Although potential health impacts of glycol inhalation are frequently cited by studies of e-cigarette smoking, the dynamics and the chemical composition of glycol-based aerosols have never been studied systematically. The objective of this work is to investigate the impact of glycol-based aerosol on indoor air quality. Specifically, we targeted artificial fogs generated with common glycols, including propylene glycol (PG) and triethylene glycol (TEG). With the aid of a novel aerosol collecting and monitoring instrument setup, we obtained time-resolved aerosol profiles and their chemical compositions in an experimental room. Artificial fog has given rise to a significant amount of ultra-fine particulate matter, demonstrating its negative impact on indoor air quality. Additionally, we found a high concentration (9.75 mM) of formaldehyde and other carbonyls in fog machine fluids stored for months. These compounds are introduced to the indoor air upon artificial fog application. We propose that carbonyls have accumulated from the oxidative decomposition of glycols, initiated by OH radicals and singlet oxygens (1 O2 ) and likely sustained by autooxidation. Oxidation of glycols by indoor oxidants has never been reported previously. Such chemical processes can represent an unrecognized source of toxic carbonyl compounds which is also applicable to other glycol-based solvents.
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Affiliation(s)
- Xinyang Guo
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Toluwatise Ehindero
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Chester Lau
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Ran Zhao
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
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6
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Wang L, Huang X, Yu S, Xiong F, Wang Y, Zhang X, Ren Y. Characterization of the volatile flavor profiles of Zhenjiang aromatic vinegar combining a novel nanocomposite colorimetric sensor array with HS-SPME-GC/MS. Food Res Int 2022; 159:111585. [DOI: 10.1016/j.foodres.2022.111585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 06/13/2022] [Accepted: 06/24/2022] [Indexed: 11/29/2022]
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7
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Zhu Z, Merlin F, Yang M, Lee K, Chen B, Liu B, Cao Y, Song X, Ye X, Li QK, Greer CW, Boufadel MC, Isaacman L, Zhang B. Recent advances in chemical and biological degradation of spilled oil: A review of dispersants application in the marine environment. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129260. [PMID: 35739779 DOI: 10.1016/j.jhazmat.2022.129260] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
Growing concerns over the risk of accidental releases of oil into the marine environment have emphasized our need to improve both oil spill preparedness and response strategies. Among the available spill response options, dispersants offer the advantages of breaking oil slicks into small oil droplets and promoting their dilution, dissolution, and biodegradation within the water column. Thus dispersants can reduce the probability of oil slicks at sea from reaching coastal regions and reduce their direct impact on mammals, sea birds and shoreline ecosystems. To facilitate marine oil spill response operations, especially addressing spill incidents in remote/Arctic offshore regions, an in-depth understanding of the transportation, fate and effects of naturally/chemically dispersed oil is of great importance. This review provides a synthesis of recent research results studies related to the application of dispersants at the surface and in the deep sea, the fate and transportation of naturally and chemically dispersed oil, and dispersant application in the Arctic and ice-covered waters. Future perspectives have been provided to identify the research gaps and help industries and spill response organizations develop science-based guidelines and protocols for the application of dispersants application.
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Affiliation(s)
- Zhiwen Zhu
- Northern Region Persistent Organic Pollutant Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University, St. John's, NL A1B 3×5, Canada
| | | | - Min Yang
- Northern Region Persistent Organic Pollutant Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University, St. John's, NL A1B 3×5, Canada
| | - Kenneth Lee
- Fisheries and Oceans Canada, Ecosystem Science, Ottawa, ON K1A 0E6, Canada
| | - Bing Chen
- Northern Region Persistent Organic Pollutant Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University, St. John's, NL A1B 3×5, Canada
| | - Bo Liu
- Northern Region Persistent Organic Pollutant Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University, St. John's, NL A1B 3×5, Canada
| | - Yiqi Cao
- Northern Region Persistent Organic Pollutant Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University, St. John's, NL A1B 3×5, Canada
| | - Xing Song
- Northern Region Persistent Organic Pollutant Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University, St. John's, NL A1B 3×5, Canada
| | - Xudong Ye
- Northern Region Persistent Organic Pollutant Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University, St. John's, NL A1B 3×5, Canada
| | - Qingqi K Li
- Department of Civil and Environmental Engineering, Duke University, Durham, NC 27708, USA
| | - Charles W Greer
- National Research Council Canada, Energy, Mining and Environment Research Centre, Montreal, QC H4P 2R2, Canada
| | - Michel C Boufadel
- Center for Natural Resources, Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA
| | - Lisa Isaacman
- Fisheries and Oceans Canada, Ecosystem Science, Ottawa, ON K1A 0E6, Canada
| | - Baiyu Zhang
- Northern Region Persistent Organic Pollutant Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University, St. John's, NL A1B 3×5, Canada.
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8
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Wang SY, Liu H, Zhu JH, Zhou SS, Xu JD, Zhou J, Mao Q, Kong M, Li SL, Zhu H. 2,4-dinitrophenylhydrazine capturing combined with mass defect filtering strategy to identify aliphatic aldehydes in biological samples. J Chromatogr A 2022; 1679:463405. [DOI: 10.1016/j.chroma.2022.463405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 10/15/2022]
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9
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Aeppli C, Mitchell DA, Keyes P, Beirne EC, McFarlin KM, Roman-Hubers AT, Rusyn I, Prince RC, Zhao L, Parkerton TF, Nedwed T. Oil Irradiation Experiments Document Changes in Oil Properties, Molecular Composition, and Dispersant Effectiveness Associated with Oil Photo-Oxidation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:7789-7799. [PMID: 35605020 PMCID: PMC9552565 DOI: 10.1021/acs.est.1c06149] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
While chemical dispersants are a powerful tool for treating spilled oil, their effectiveness can be limited by oil weathering processes such as evaporation and emulsification. It has been suggested that oil photo-oxidation could exacerbate these challenges. To address the role of oil photo-oxidation in dispersant effectiveness, outdoor mesocosm experiments with crude oil on seawater were performed. Changes in bulk oil properties and molecular composition were quantified to characterize oil photo-oxidation over 11 days. To test relative dispersant effectiveness, oil residues were evaluated using the Baffled Flask Test. The results show that oil irradiation led to oxygen incorporation, formation of oxygenated hydrocarbons, and higher oil viscosities. Oil irradiation was associated with decreased dispersant efficacy, with effectiveness falling from 80 to <50% in the Baffled Flask Test after more than 3 days of irradiation. Increasing photo-oxidation-induced viscosity seems to drive the decreasing dispersant effectiveness. Comparing the Baffled Flask Test results with field data from the Deepwater Horizon oil spill showed that laboratory dispersant tests underestimate the dispersion of photo-oxidized oil in the field. Overall, the results suggest that prompt dispersant application (within 2-4 days), as recommended by current oil spill response guidelines, is necessary for effective dispersion of spilled oil.
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Affiliation(s)
- Christoph Aeppli
- Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine 04544, United States
| | | | - Phoebe Keyes
- Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine 04544, United States
| | - Erin C Beirne
- Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine 04544, United States
| | - Kelly M McFarlin
- ExxonMobil Biomedical Sciences Inc., Clinton, New Jersey 08809, United States
| | - Alina T Roman-Hubers
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, Texas 77843, United States
| | - Ivan Rusyn
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, Texas 77843, United States
| | - Roger C Prince
- Stonybrook Apiary, Pittstown, New Jersey 08867, United States
| | - Lin Zhao
- ExxonMobil Upstream Research Company, Spring, Texas 77389, United States
| | | | - Tim Nedwed
- ExxonMobil Upstream Research Company, Spring, Texas 77389, United States
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10
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Aeppli C. Recent advance in understanding photooxidation of hydrocarbons after oil spills. Curr Opin Chem Eng 2022. [DOI: 10.1016/j.coche.2021.100763] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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11
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Rodrigues CJC, de Carvalho CCCR. Process Development for Benzyl Alcohol Production by Whole-Cell Biocatalysis in Stirred and Packed Bed Reactors. Microorganisms 2022; 10:microorganisms10050966. [PMID: 35630410 PMCID: PMC9147996 DOI: 10.3390/microorganisms10050966] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/29/2022] [Accepted: 04/29/2022] [Indexed: 01/27/2023] Open
Abstract
The ocean is an excellent source for new biocatalysts due to the tremendous genetic diversity of marine microorganisms, and it may contribute to the development of sustainable industrial processes. A marine bacterium was isolated and selected for the conversion of benzaldehyde to benzyl alcohol, which is an important chemical employed as a precursor for producing esters for cosmetics and other industries. Enzymatic production routes are of interest for sustainable processes. To overcome benzaldehyde low water solubility, DMSO was used as a biocompatible cosolvent up to a concentration of 10% (v/v). A two-phase system with n-hexane, n-heptane, or n-hexadecane as organic phase allowed at least a 44% higher relative conversion of benzaldehyde than the aqueous system, and allowed higher initial substrate concentrations. Cell performance decreased with increasing product concentration but immobilization of cells in alginate improved four-fold the robustness of the biocatalyst: free and immobilized cells were inhibited at concentrations of benzyl alcohol of 5 and 20 mM, respectively. Scaling up to a 100 mL stirred reactor, using a fed-batch approach, enabled a 1.5-fold increase in benzyl alcohol productivity when compared with batch mode. However, product accumulation in the reactor hindered the conversion. The use of a continuous flow reactor packed with immobilized cells enabled a 9.5-fold increase in productivity when compared with the fed-batch stirred reactor system.
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Affiliation(s)
- Carlos J. C. Rodrigues
- Department of Bioengineering, iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal;
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Carla C. C. R. de Carvalho
- Department of Bioengineering, iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal;
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
- Correspondence: ; Tel.: +351-21-841-9594
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12
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Katz SD, Chen H, Fields DM, Beirne EC, Keyes P, Drozd GT, Aeppli C. Changes in Chemical Composition and Copepod Toxicity during Petroleum Photo-oxidation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:5552-5562. [PMID: 35435676 DOI: 10.1021/acs.est.2c00251] [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] [Indexed: 06/14/2023]
Abstract
Photoproducts can be formed rapidly in the initial phase of a marine oil spill. However, their toxicity is not well understood. In this study, oil was irradiated, chemically characterized, and tested for toxicity in three copepod species (Acartia tonsa, Temora longicornis, and Calanus finmarchicus). Irradiation led to a depletion of polycyclic aromatic hydrocarbons (PAHs) and n-alkanes in oil residues, along with an enrichment in aromatic and aliphatic oil photoproducts. Target lipid model-based calculations of PAH toxicity units predicted that PAH toxicities were lower in water-accommodated fractions (WAFs) of irradiated oil residues ("irradiated WAFs") than in WAFs of dark-control samples ("dark WAFs"). In contrast, biomimetic extraction (BE) measurements showed increased bioaccumulation potential of dissolved constituents of irradiated WAFs compared to dark WAFs, mainly driven by photoproducts present in irradiated oil. In line with the BE results, copepod mortality increased in irradiated WAFs compared to dark WAFs. However, low copepod toxicities were observed for WAFs produced with photo-oxidized oil slicks collected during the Deepwater Horizon oil spill. The results of this study suggest that while oil photoproducts have the potential to be a significant source of copepod toxicity, dilution and dispersion of these higher solubility products appear to help mitigate their toxicity at sea.
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Affiliation(s)
- Samuel D Katz
- Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine 04544, United States
- Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island 02882, United States
| | - Haining Chen
- Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine 04544, United States
| | - David M Fields
- Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine 04544, United States
- Colby College, Waterville, Maine 04901, United States
| | - Erin C Beirne
- Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine 04544, United States
| | - Phoebe Keyes
- Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine 04544, United States
| | - Greg T Drozd
- Colby College, Waterville, Maine 04901, United States
| | - Christoph Aeppli
- Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine 04544, United States
- Colby College, Waterville, Maine 04901, United States
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13
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Feng X, Tang Z, Chen B, Feng S, Liu Y, Meng Q. A high-efficiency quantitation method for fatty aldehyde based on chemical isotope-tagged derivatisation. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2021.104381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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14
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Progress and Challenges in Quantifying Carbonyl-Metabolomic Phenomes with LC-MS/MS. Molecules 2021; 26:molecules26206147. [PMID: 34684729 PMCID: PMC8541004 DOI: 10.3390/molecules26206147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/30/2021] [Accepted: 10/01/2021] [Indexed: 12/17/2022] Open
Abstract
Carbonyl-containing metabolites widely exist in biological samples and have important physiological functions. Thus, accurate and sensitive quantitative analysis of carbonyl-containing metabolites is crucial to provide insight into metabolic pathways as well as disease mechanisms. Although reversed phase liquid chromatography electrospray ionization mass spectrometry (RPLC-ESI-MS) is widely used due to the powerful separation capability of RPLC and high specificity and sensitivity of MS, but it is often challenging to directly analyze carbonyl-containing metabolites using RPLC-ESI-MS due to the poor ionization efficiency of neutral carbonyl groups in ESI. Modification of carbonyl-containing metabolites by a chemical derivatization strategy can overcome the obstacle of sensitivity; however, it is insufficient to achieve accurate quantification due to instrument drift and matrix effects. The emergence of stable isotope-coded derivatization (ICD) provides a good solution to the problems encountered above. Thus, LC-MS methods that utilize ICD have been applied in metabolomics including quantitative targeted analysis and untargeted profiling analysis. In addition, ICD makes multiplex or multichannel submetabolome analysis possible, which not only reduces instrument running time but also avoids the variation of MS response. In this review, representative derivatization reagents and typical applications in absolute quantification and submetabolome profiling are discussed to highlight the superiority of the ICD strategy for detection of carbonyl-containing metabolites.
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15
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Novel colorimetric sensor array for identification of baijiu using color reactions of flavor compounds. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106277] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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16
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Snyder K, Mladenov N, Richardot W, Dodder N, Nour A, Campbell C, Hoh E. Persistence and photochemical transformation of water soluble constituents from industrial crude oil and natural seep oil in seawater. MARINE POLLUTION BULLETIN 2021; 165:112049. [PMID: 33581568 DOI: 10.1016/j.marpolbul.2021.112049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 12/31/2020] [Accepted: 01/02/2021] [Indexed: 06/12/2023]
Abstract
The persistence and transformation of water soluble chemical constituents derived from surface oil from the 2015 Refugio Oil Spill and from a nearby natural seep were evaluated under simulated sunlight conditions. Photoirradiation resulted in enhanced oil slick dissolution, which was more pronounced in spill oil compared to seep oil. Nontargeted analysis based on GC × GC/TOF-MS revealed that photoirradiation promoted oil slick dissolution, and more water soluble compounds were released from spill oil (500 compounds) than from seep oil (180 compounds), most of them (488 in spill oil and 150 in seep oil) still persisting in solution after 67 days of photoirradiation. First-order degradation rate coefficients of humic-like water soluble constituents were found to be 0.26 day-1 and 0.29 day-1 for irradiated spill and seep samples, respectively. The decreases in humic-like fluorescence, specific UV absorbance, and aromatic compounds without corresponding decreases in DOC concentration support indirect photochemical transformation in addition to complete photomineralization.
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Affiliation(s)
- Kristen Snyder
- Department of Civil, Construction, and Environmental Engineering, San Diego State University, San Diego, CA 92182, United States
| | - Natalie Mladenov
- Department of Civil, Construction, and Environmental Engineering, San Diego State University, San Diego, CA 92182, United States.
| | - William Richardot
- School of Public Health, San Diego State University, San Diego, CA 92182, United States
| | - Nathan Dodder
- School of Public Health, San Diego State University, San Diego, CA 92182, United States
| | - Azin Nour
- Department of Civil, Construction, and Environmental Engineering, San Diego State University, San Diego, CA 92182, United States
| | - Cari Campbell
- Department of Civil, Construction, and Environmental Engineering, San Diego State University, San Diego, CA 92182, United States
| | - Eunha Hoh
- School of Public Health, San Diego State University, San Diego, CA 92182, United States
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Li R, Huang Y, Zhu D, Ho W, Cao J, Lee S. Improved Oxygen Activation over a Carbon/Co 3O 4 Nanocomposite for Efficient Catalytic Oxidation of Formaldehyde at Room Temperature. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:4054-4063. [PMID: 33657800 DOI: 10.1021/acs.est.1c00490] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Oxygen activation is a key step in the catalytic oxidation of formaldehyde (HCHO) at room temperature. In this study, we synthesized a carbon/Co3O4 nanocomposite (C-Co3O4) as a solution to the insufficient capability of pristine Co3O4 (P-Co3O4) to activate oxygen for the first time. Oxygen activation was improved via carbon preventing the agglomeration of Co3O4 nanoparticles, resulting in small particles (approximately 7.7 nm) and more exposed active sites (oxygen vacancies and Co3+). The removal efficiency of C-Co3O4 for 1 ppm of HCHO remained above 90%, whereas P-Co3O4 was rapidly deactivated. In static tests, the CO2 selectivity of C-Co3O4 was close to 100%, far exceeding that of P-Co3O4 (42%). Various microscopic analyses indicated the formation and interaction of a composite structure between the C and Co3O4 interface. The carbon composite caused a disorder on the surface lattice of Co3O4, constructing more oxygen vacancies than P-Co3O4. Consequently, the surface reducibility of C-Co3O4 was improved, as was its ability to continuously activate oxygen and H2O into reactive oxygen species (ROS). We speculate that accelerated production of ROS helped rapidly degrade intermediates such as dioxymethylene, formate, and carbonate into CO2. In contrast, carbonate accumulation on P-Co3O4 surfaces containing less ROS may have caused P-Co3O4 inactivation. Compared with noble nanoparticles, this study provides a transition metal-based nanocomposite for HCHO oxidation with high efficiency, high selectivity, and low cost, which is meaningful for indoor air purification.
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Affiliation(s)
- Rong Li
- Key Laboratory of Aerosol Chemistry & Physics, State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences (CAS), Xi'an 710061, P. R. China
- CAS Center for Excellence in Quaternary Science and Global Change, Xi'an 710061, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Huang
- Key Laboratory of Aerosol Chemistry & Physics, State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences (CAS), Xi'an 710061, P. R. China
- CAS Center for Excellence in Quaternary Science and Global Change, Xi'an 710061, P. R. China
| | - Dandan Zhu
- Key Laboratory of Aerosol Chemistry & Physics, State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences (CAS), Xi'an 710061, P. R. China
- CAS Center for Excellence in Quaternary Science and Global Change, Xi'an 710061, P. R. China
| | - Wingkei Ho
- Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, P. R. China
| | - Junji Cao
- Key Laboratory of Aerosol Chemistry & Physics, State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences (CAS), Xi'an 710061, P. R. China
- CAS Center for Excellence in Quaternary Science and Global Change, Xi'an 710061, P. R. China
| | - Shuncheng Lee
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, P. R. China
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Zito P, Smith DF, Cao X, Ghannam R, Tarr MA. Barium ion adduct mass spectrometry to identify carboxylic acid photoproducts from crude oil-water systems under solar irradiation. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2020; 22:2313-2321. [PMID: 33150906 DOI: 10.1039/d0em00390e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Petroleum derived dissolved organic matter (DOMHC) samples were successfully cationized with barium, revealing many [M-H + Ba]+ peaks in both dark and simulated sunlight treatments. The DOMHC samples generated after light exposure exhibited a greater number of [M-H + Ba]+ peaks compared to the dark control. Multiple [M-H + Ba]+ peaks were investigated in the irradiated DOMHC using low resolution MS/MS in order to confirm the presence of diagnostic fragment ions, m/z 139, 155 and 196 in each treatment. Due to the high complexity of the bariated DOMHC mixture, Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS/MS) was employed to obtain molecular level information for both irradiated and dark treatments. The irradiated DOMHC treatments had more bariated oxygenated species over a wide range of H/C and O/C when compared to the dark controls. Doubly bariated species were also observed in DOMHC, which provides evidence that photochemistry transforms DOMHC to even more complex mixtures with multiple oxygenations per molecule. This study provides evidence that barium adduct mass spectrometry can be successfully applied to DOMHC screening for the presence of COOHs, both in dark samples and solar irradiated samples. Furthermore, direct evidence and molecular composition of aqueous phase crude oil photoproducts is provided by this technique.
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Affiliation(s)
- Phoebe Zito
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA. and Pontchartrain Institute for Environmental Sciences, Chemical Analysis & Mass Spectrometry Facility, University of New Orleans, New Orleans, Louisiana 70148, USA
| | - Donald F Smith
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - Xian Cao
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA.
| | - Rana Ghannam
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA. and Pontchartrain Institute for Environmental Sciences, Chemical Analysis & Mass Spectrometry Facility, University of New Orleans, New Orleans, Louisiana 70148, USA
| | - Matthew A Tarr
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, USA.
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Shankar R, Jung JH, Loh A, An JG, Ha SY, Yim UH. Environmental significance of lubricant oil: A systematic study of photooxidation and its consequences. WATER RESEARCH 2020; 168:115183. [PMID: 31655438 DOI: 10.1016/j.watres.2019.115183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 10/08/2019] [Accepted: 10/11/2019] [Indexed: 06/10/2023]
Abstract
Lubricant (lube) oil discharge from ships has been widely considered as normal "operational consumption", but is now deemed to be oil pollution. Despite the chronic contamination of the marine environment by lube oil, the number of studies related to its environmental impact, characteristics, and toxicity is limited. This study is the first attempt to investigate the environmental fate of lube oil subjected to photooxidation using in situ mesocosms. A tiered approach using thin-layer chromatography-flame ionization detection (TLC-FID), Fourier-transform infrared spectroscopy (FTIR) and gas chromatography-mass spectrometry (GC-MS) demonstrated compositional changes in lube oil and the water-soluble fraction (WSF). Total polycyclic aromatic hydrocarbons (ΣPAHs) in lube oil after 96 h of photooxidation were measured at 79.8 and 41 μg/g in the control (Con) and exposure (Exp) groups, respectively. Meanwhile, the ΣPAHs concentration in WSF after 96 h was very low, at 0.25 and 0.45 μg/L in Con and Exp, respectively. FTIR and GC-MS helped identify bond changes and photoproducts in WSF. A wide range of photoproducts, including carboxylic acids, esters, anhydrides, aldehydes and ketones, were identified in WSF. Toxic effects of WSF in both the Con and Exp groups obtained after 96 h of photooxidation were evaluated on olive flounder (Paralichthys olivaceus) embryos. Morphological defects, especially tail fin fold defects, were found to be significantly elevated in both the Con and Exp groups, with marginally higher frequency in Exp. The results of this study demonstrate the need for further research on lube oil weathering, including monitoring over prolonged periods of time.
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Affiliation(s)
- Ravi Shankar
- Oil & POPs Research Group, Korea Institute of Ocean Science & Technology, Geoje, 53201, Republic of Korea; Department of Ocean Science, Korea University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Jee-Hyun Jung
- Oil & POPs Research Group, Korea Institute of Ocean Science & Technology, Geoje, 53201, Republic of Korea; Department of Ocean Science, Korea University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Andrew Loh
- Oil & POPs Research Group, Korea Institute of Ocean Science & Technology, Geoje, 53201, Republic of Korea; Department of Ocean Science, Korea University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Joon Geon An
- Oil & POPs Research Group, Korea Institute of Ocean Science & Technology, Geoje, 53201, Republic of Korea
| | - Sung Yong Ha
- Oil & POPs Research Group, Korea Institute of Ocean Science & Technology, Geoje, 53201, Republic of Korea
| | - Un Hyuk Yim
- Oil & POPs Research Group, Korea Institute of Ocean Science & Technology, Geoje, 53201, Republic of Korea; Department of Ocean Science, Korea University of Science and Technology, Daejeon, 34113, Republic of Korea.
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20
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Hu YN, Chen D, Zhang TY, Ding J, Feng YQ. Use of ammonium sulfite as a post-column derivatization reagent for rapid detection and quantification of aldehydes by LC-MS. Talanta 2020; 206:120172. [PMID: 31514828 DOI: 10.1016/j.talanta.2019.120172] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/22/2019] [Accepted: 07/23/2019] [Indexed: 02/07/2023]
Affiliation(s)
- Yu-Ning Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Di Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Tian-Yi Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Jun Ding
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Yu-Qi Feng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, China.
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21
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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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22
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Kim D, Ha SY, An JG, Cha S, Yim UH, Kim S. Estimating degree of degradation of spilled oils based on relative abundance of aromatic compounds observed by paper spray ionization mass spectrometry. JOURNAL OF HAZARDOUS MATERIALS 2018; 359:421-428. [PMID: 30056364 DOI: 10.1016/j.jhazmat.2018.07.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 06/19/2018] [Accepted: 07/12/2018] [Indexed: 06/08/2023]
Abstract
Paper spray ionization mass spectrometry (PSI-MS) was applied for the first time to study temporal change of photo-oxidized and weathered oils subjected to degradation. PSI is chosen in this study because it is an optimal ionization technique for the analysis of degraded oils with limited sample quantity and prone to salt and particulate contamination. With PSI-MS, quantitative analysis of oils can be successfully performed with as little as 2 μg of oil sample. In addition, oil solutions containing up to 0.05% sodium chloride were successfully analyzed with PSI-MS. In the PSI-MS spectra of photo-degraded oils, the relative abundance of compounds having double equivalence value (DBE) ≥ 5 increased but those with DBE < 5 decreased in number. The summed abundance ratio of compounds having DBE < 5 and DBE ≥ 5 showed a negative exponential correlation with the duration of UV exposure in laboratory experiments. The same trend was observed from spilled oils obtained from the environment. Therefore, this ratio serves as an effective means to estimate the degree of weathering in spilled oils.
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Affiliation(s)
- Donghwi Kim
- Department of Chemistry, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Sung Yong Ha
- Oil and POPs Research Group, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea
| | - Joon Geon An
- Oil and POPs Research Group, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea
| | - Sangwon Cha
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin 17035, Republic of Korea
| | - Un Hyuk Yim
- Oil and POPs Research Group, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea.
| | - Sunghwan Kim
- Department of Chemistry, Kyungpook National University, Daegu 41566, Republic of Korea; Green-Nano Materials Research Center, Daegu 41566, Republic of Korea.
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23
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Aeppli C, Swarthout RF, O'Neil GW, Katz SD, Nabi D, Ward CP, Nelson RK, Sharpless CM, Reddy CM. How Persistent and Bioavailable Are Oxygenated Deepwater Horizon Oil Transformation Products? ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:7250-7258. [PMID: 29812924 DOI: 10.1021/acs.est.8b01001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
About half of the surface oil floating on the Gulf of Mexico in the aftermath of the 2010 Deepwater Horizon spill was transformed into oxygenated hydrocarbons (OxHC) within days to weeks. These OxHC persist for years in oil/sand aggregates in nearshore and beach environments, and there is concern that these aggregates might represent a long-term source of toxic compounds. However, because this OxHC fraction is a continuum of transformation products that are not well chemically characterized, it is not included in current oil spill fate and effect models. This challenges an accurate environmental risk assessment of weathered oil. Here, we used molecular and bulk analytical techniques to constrain the chemical composition and environmental fate of weathered oil samples collected on the sea surface and beaches of the Gulf of Mexico. We found that approximately 50% of the weathering-related disappearance of saturated and aromatic compounds in these samples was compensated by an increase in OxHC. Furthermore, we identified and quantified a suite of oxygenated aliphatic compounds that are more water-soluble and less hydrophobic than its presumed precursors, but only represent <1% of the oil residues' mass. Lastly, dissolution experiments showed that compounds in the OxHC fraction can leach into the water; however, the mass loss of this process is small. Overall, this study shows that the OxHC fraction is prevalent and persistent in weathered oil/sand aggregates, which can act as a long-term source of dissolved oil-derived compounds.
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Affiliation(s)
- Christoph Aeppli
- Bigelow Laboratory for Ocean Sciences , East Boothbay , Maine 04544 , United States
| | - Robert F Swarthout
- Department of Chemistry , Appalachian State University , Boone , North Carolina 28608 , United States
| | - Gregory W O'Neil
- Department of Marine Chemistry and Geochemistry , Woods Hole Oceanographic Institution , Woods Hole , Massachusetts 02543 , United States
- Department of Chemistry , Western Washington University , Bellingham , Washington 98225 , United States
| | - Samuel D Katz
- Bigelow Laboratory for Ocean Sciences , East Boothbay , Maine 04544 , United States
| | - Deedar Nabi
- Bigelow Laboratory for Ocean Sciences , East Boothbay , Maine 04544 , United States
- Institute of Environmental Sciences and Engineering , National University of Sciences and Technology , Islamabad 24090 , Pakistan
| | - Collin P Ward
- Department of Marine Chemistry and Geochemistry , Woods Hole Oceanographic Institution , Woods Hole , Massachusetts 02543 , United States
| | - Robert K Nelson
- Department of Marine Chemistry and Geochemistry , Woods Hole Oceanographic Institution , Woods Hole , Massachusetts 02543 , United States
| | - Charles M Sharpless
- Department of Chemistry , University of Mary Washington , Fredericksburg , Virginia 22401 , United States
| | - Christopher M Reddy
- Department of Marine Chemistry and Geochemistry , Woods Hole Oceanographic Institution , Woods Hole , Massachusetts 02543 , United States
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