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Albishi T, Mikhael A, Shahidi F, Fridgen TD, Delmas M, Banoub J. Top-down lignomic matrix-assisted laser desorption/ionization time-of-flight tandem mass spectrometry analysis of lignin oligomers extracted from date palm wood. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2019; 33:539-560. [PMID: 30506948 DOI: 10.1002/rcm.8368] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 11/23/2018] [Accepted: 11/26/2018] [Indexed: 06/09/2023]
Abstract
RATIONALE We report for the first time the top-down lignomic analysis of the virgin released lignin (VRL) oligomers obtained from the Saudi date palm wood (SDPW), using a matrix-assisted laser desorption/ionization time-of-flight/time-of-flight (MALDI-TOF/TOF) instrument. In addition, we are proposing new collision-induced dissociation tandem mass spectrometry (CID-MS/MS) fragmentation routes for this series of unreported VRL oligomers. METHODS We have used direct MALDI-TOF-MS analysis of the mixture of lignin oligomers without any chromatographic pre-separation. High-energy CID-MS/MS analyses were used to confirm the precursor ion structures. RESULTS Six protonated lignin oligomer molecules were identified: [C19 H24 O8 + H]+ as H(8-O-4')G; [C50 H52 O19 + H]+ as H(8-O-4')H(8-O-4'')S(8-O-4''')S(8-O-4'''')G; [C58 H54 O18 + H]+ as H(8-O-4')H(8-O-4'')H(8-O-4''')G(8-O-4'''')S(8-O-4''''')G; [C58 H54 O19 + H]+ as H(8-O-4')H(8-O-4'')H(8-O-4''')S(8-O-4'''')S(8-O-4''''')G; [C61 H68 O25 + H]+ as H(8-O-4')G(8-O-4'')G(8-O-4''')S(8-O-4'''')S(8-O-4''''')G; and [C61 H68 O26 + H]+ as C(8-O-4')G(8-O-4'')G(8-O-4''')S(8-O-4'''')S(8-O-4''''')G units (H = coniferyl, S = sinapyl, and G = p-coumaryl). Two distonic cations were identified as [C39 H43 O15 + H]+• and [C40 H43 O16 + H]+• deriving from two tetrameric lignin oligomers. The high-energy MS/MS analyses allowed the confirmation of the proposed structures of this series of lignin oligomers. CONCLUSIONS To our knowledge, this is the first elucidation of the lignin structure of the Saudi seedling date palm wood that was accomplished using a top-down lignomic strategy that has not previously been published. The complex high-energy CID-MS/MS fragmentations presented herein are novel and have never been described before.
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Affiliation(s)
- Tasahil Albishi
- Department of Biochemistry, Memorial University of Newfoundland, St John's, Newfoundland, A1C 5X1, Canada
| | - Abanoub Mikhael
- Department of Chemistry, Memorial University of Newfoundland, St John's, Newfoundland, A1C 5X1, Canada
| | - Fereidoon Shahidi
- Department of Biochemistry, Memorial University of Newfoundland, St John's, Newfoundland, A1C 5X1, Canada
| | - Travis D Fridgen
- Department of Chemistry, Memorial University of Newfoundland, St John's, Newfoundland, A1C 5X1, Canada
| | - Michel Delmas
- Inp-Ensiacet, Chemical Engineering Laboratory 4, University of Toulouse, Allée Emile Monso, 31432, Toulouse, France
| | - Joseph Banoub
- Department of Biochemistry, Memorial University of Newfoundland, St John's, Newfoundland, A1C 5X1, Canada
- Department of Chemistry, Memorial University of Newfoundland, St John's, Newfoundland, A1C 5X1, Canada
- Science Branch, Special Projects, Fisheries and Oceans Canada, St John's, NL, A1C 5X1, Canada
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Luek JL, Harir M, Schmitt-Kopplin P, Mouser PJ, Gonsior M. Organic sulfur fingerprint indicates continued injection fluid signature 10 months after hydraulic fracturing. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2019; 21:206-213. [PMID: 30303509 DOI: 10.1039/c8em00331a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Hydraulic fracturing requires the injection of large volumes of fluid to extract oil and gas from low permeability unconventional resources (e.g., shale, coalbed methane), resulting in the production of large volumes of highly complex and variable waste fluids. Shale gas fluid samples were collected from two hydraulically fractured wells in Morgantown, WV, USA at the Marcellus Shale Energy and Environment Laboratory (MSEEL) and analyzed using ultrahigh resolution mass spectrometry to investigate the dissolved organic sulfur (DOS) pool. Using a non-targeted approach, ions assigned DOS formulas were analyzed to identify dominant DOS classes, describe their temporal trends and their implications, and describe the molecular characteristics of the larger DOS pool. The average molecular weight of organic sulfur compounds in flowback decreased and was lowest in produced waters. The dominant DOS classes were putatively assigned to alcohol sulfate and alcohol ethoxysulfate surfactants, likely injected as fracturing fluid additives, on the basis of exact mass and homolog distribution matching. This DOS signature was identifiable 10 months after the initial injection of hydraulic fracturing fluid, and an absence of genes that code for alcohol ethoxysulfate degrading proteins (e.g., sulfatases) in the shale well genomes and metagenomes support that these additives are not readily degraded biologically and may continue to act as a chemical signature of the injected fluid. Understanding the diversity, lability, and fate of organic sulfur compounds in shale wells is important for engineering productive wells and preventing gas souring as well as understanding the consequences of unintended fluid release to the environment. The diversity of DOS, particularly more polar compounds, needs further investigation to determine if the identified characteristics and temporal patterns are unique to the analyzed wells or represent broader patterns found in other formations and under other operating conditions.
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Affiliation(s)
- Jenna L Luek
- University of New Hampshire, Department of Civil and Environmental Engineering, Durham, NH 03825, USA.
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Gutierrez-Villagomez JM, Peru KM, Edington C, Headley JV, Pauli BD, Trudeau VL. Naphthenic Acid Mixtures and Acid-Extractable Organics from Oil Sands Process-Affected Water Impair Embryonic Development of Silurana (Xenopus) tropicalis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:2095-2104. [PMID: 30648867 DOI: 10.1021/acs.est.8b04461] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Naphthenic acids (NAs) are carboxylic acids naturally occurring in crude oils and bitumen and are suspected to be the primary toxic substances in wastewaters associated with oil refineries and mining of oil sands. Oil sands process-affected water (OSPW) generated by the extraction of bitumen from oil sands are a major source of NAs and are currently stored in tailings ponds. We report on the acute lethality and teratogenic effects of aquatic exposure of Silurana (Xenopus) tropicalis embryos to commercial NA extracts and from the acid extractable organics (AEOs) fraction of a Canadian OSPW. Using electrospray ionization-high resolution mass spectrometry, we determined that the O2 species proportion were 98.8, 98.9 and 58.6% for commercial mixtures Sigma 1 (S1M) and Sigma 2 (S2M), and AEOs, respectively. The 96h LC50 estimates were 10.4, 11.7, and 52.3 mg/L for S1M, S2M, and the AEOs, respectively. The 96h EC50 estimates based on frequencies of developmental abnormalities were 2.1, 2.6, and 14.2 mg/L for S1M, S2M, and the AEOs, respectively. The main effects observed were reduced body size, edema, and cranial, heart, gut and ocular abnormalities. Increasing concentrations of the mixtures resulted in increased severity and frequency of abnormalities ( p < 0.05). The rank-order potency was S1M > S2M > AEO based on LC50 and EC50 estimates. These data provide insight into the effects NAs in amphibian embryos and can contribute to the development of environmental guidelines for the management of OSPW.
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Affiliation(s)
| | - Kerry M Peru
- Watershed Hydrology and Ecology Research Division, Water Science and Technology , Environment and Climate Change Canada , Saskatoon , Saskatchewan , Canada S7N 3H5
| | - Connor Edington
- Department of Biology , University of Ottawa , Ottawa , Ontario , Canada K1N 6N5
| | - John V Headley
- Watershed Hydrology and Ecology Research Division, Water Science and Technology , Environment and Climate Change Canada , Saskatoon , Saskatchewan , Canada S7N 3H5
| | - Bruce D Pauli
- Ecotoxicology and Wildlife Health Division, Wildlife and Landscape Science Directorate, Science and Technology Branch , Environment and Climate Change Canada , Ottawa , Ontario , Canada K1S 5B6
| | - Vance L Trudeau
- Department of Biology , University of Ottawa , Ottawa , Ontario , Canada K1N 6N5
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54
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Solihat NN, Acter T, Kim D, Plante AF, Kim S. Analyzing Solid-Phase Natural Organic Matter Using Laser Desorption Ionization Ultrahigh Resolution Mass Spectrometry. Anal Chem 2018; 91:951-957. [DOI: 10.1021/acs.analchem.8b04032] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Nissa Nurfajrin Solihat
- Department of Chemistry, Kyungpook National University, Daegu 41566, Republic of Korea
- Research Center for Biomaterials, Indonesian Institute of Sciences (LIPI), Cibinong 16911, Indonesia
| | - Thamina Acter
- Department of Chemistry, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Donghwi Kim
- Department of Chemistry, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Alain F. Plante
- University of Pennsylvania, 240 South 33rd Street, Philadelphia, Pennsylvania 19104, United States
| | - 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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55
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Yellowstone Hot Springs are Organic Chemodiversity Hot Spots. Sci Rep 2018; 8:14155. [PMID: 30237444 PMCID: PMC6147864 DOI: 10.1038/s41598-018-32593-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 09/11/2018] [Indexed: 11/08/2022] Open
Abstract
Yellowstone National Park hydrothermal springs were investigated according to their organic geochemistry with a special focus on the Yellowstone hot spring dissolved organic matter (YDOM) that was solid-phase extracted. Here we show that YDOM has a unique chemodiversity that has not yet been observed anywhere else in aquatic surface environments and that Yellowstone hot springs are organic chemodiversity hot spots. Four main geochemically classified hot spring types (alkaline-chloride, mixed alkaline-chloride, acid-chloride-sulfate and travertine-precipitating) exhibited distinct organic molecular signatures that correlated remarkably well with the known inorganic geochemistry and manifested themselves in excitation emission matrix fluorescence, nuclear magnetic resonance, and ultrahigh resolution mass spectra. YDOM contained thousands of molecular formulas unique to Yellowstone of which 80% contained sulfur, even in low hydrogen sulfide containing alkaline-chloride springs. This unique YDOM reflects the extreme organic geochemistry present in the hydrothermal features of Yellowstone National Park.
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56
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Varanasi L, Coscarelli E, Khaksari M, Mazzoleni LR, Minakata D. Transformations of dissolved organic matter induced by UV photolysis, Hydroxyl radicals, chlorine radicals, and sulfate radicals in aqueous-phase UV-Based advanced oxidation processes. WATER RESEARCH 2018; 135:22-30. [PMID: 29454238 DOI: 10.1016/j.watres.2018.02.015] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 01/26/2018] [Accepted: 02/06/2018] [Indexed: 06/08/2023]
Abstract
Considering the increasing identification of trace organic contaminants in natural aquatic environments, the removal of trace organic contaminants from water or wastewater discharge is an urgent task. Ultraviolet (UV) and UV-based advanced oxidation processes (AOPs), such as UV/hydrogen peroxide (UV/H2O2), UV/free chlorine and UV/persulfate, are attractive and promising approaches for the removal of these contaminants due to the high reactivity of active radical species produced in these UV-AOPs with a wide variety of organic contaminants. However, the removal efficiency of trace contaminants is greatly affected by the presence of background dissolved organic matter (DOM). In this study, we use ultrahigh resolution mass spectrometry to evaluate the transformation of a standard Suwanee River fulvic acid DOM isolate in UV photolysis and UV-AOPs. The use of probe compounds allows for the determination of the steady-state concentrations of active radical species in each UV-AOP. The changes in the H/C and O/C elemental ratios, double bond equivalents, and the low-molecular-weight transformation product concentrations of organic acids reveal that different DOM transformation patterns are induced by each UV-AOP. By comparison with the known reactivities of each radical species with specific organic compounds, we mechanistically and systematically elucidate the molecular-level DOM transformation pathways induced by hydroxyl, chlorine, and sulfate radicals in UV-AOPs. We find that there is a distinct transformation in the aliphatic components of DOM due to HO• in UV/H2O2 and UV/free chlorine. Cl• induced transformation of olefinic species is also observed in the UV/free chlorine system. Transformation of aromatic and olefinic moieties by SO4•- are the predominant pathways in the UV/persulfate system.
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Affiliation(s)
- Lathika Varanasi
- Department of Civil and Environmental Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA.
| | - Erica Coscarelli
- Department of Civil and Environmental Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA.
| | - Maryam Khaksari
- Chemical Advanced Resolution Methods Laboratory, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA; Department of Chemistry, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA.
| | - Lynn R Mazzoleni
- Chemical Advanced Resolution Methods Laboratory, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA; Department of Chemistry, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA.
| | - Daisuke Minakata
- Department of Civil and Environmental Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA.
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57
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He C, Jiang B, Shi Q, Hsu CS. Comment on “Laser Desorption/Ionization Coupled to FTICR Mass Spectrometry for Studies of Natural Organic Matter”. Anal Chem 2018; 90:5965-5967. [DOI: 10.1021/acs.analchem.7b05023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Chen He
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Bin Jiang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Wushan, Guangzhou 510640, PR China
| | - Quan Shi
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Chang Samuel Hsu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
- Petro Bio Oil Consulting, Tallahassee, Florida 32312, United States
- Department of Chemical and Biomedical Engineering, Florida A&M University/Florida State University, Tallahassee, Florida 32310, United States
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58
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Spatially resolved chemical analysis of cicada wings using laser-ablation electrospray ionization (LAESI) imaging mass spectrometry (IMS). Anal Bioanal Chem 2018; 410:1911-1921. [DOI: 10.1007/s00216-018-0855-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 12/21/2017] [Accepted: 01/04/2018] [Indexed: 01/27/2023]
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59
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Lin P, Bluvshtein N, Rudich Y, Nizkorodov SA, Laskin J, Laskin A. Molecular Chemistry of Atmospheric Brown Carbon Inferred from a Nationwide Biomass Burning Event. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:11561-11570. [PMID: 28759227 DOI: 10.1021/acs.est.7b02276] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Lag Ba'Omer, a nationwide bonfire festival in Israel, was chosen as a case study to investigate the influence of a major biomass burning event on the light absorption properties of atmospheric brown carbon (BrC). The chemical composition and optical properties of BrC chromophores were investigated using a high performance liquid chromatography (HPLC) platform coupled to photo diode array (PDA) and high resolution mass spectrometry (HRMS) detectors. Substantial increase of BrC light absorption coefficient was observed during the night-long biomass burning event. Most chromophores observed during the event were attributed to nitroaromatic compounds (NAC), comprising 28 elemental formulas of at least 63 structural isomers. The NAC, in combination, accounted for 50-80% of the total visible light absorption (>400 nm) by solvent extractable BrC. The results highlight that NAC, in particular nitrophenols, are important light absorption contributors of biomass burning organic aerosol (BBOA), suggesting that night time chemistry of •NO3 and N2O5 with particles may play a significant role in atmospheric transformations of BrC. Nitrophenols and related compounds were especially important chromophores of BBOA. The absorption spectra of the BrC chromophores are influenced by the extraction solvent and solution pH, implying that the aerosol acidity is an important factor controlling the light absorption properties of BrC.
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Affiliation(s)
- Peng Lin
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory , Richland, Washington 99354, United States
| | - Nir Bluvshtein
- Department of Earth and Planetary Sciences, Weizmann Institute of Science , Rehovot 76100, Israel
| | - Yinon Rudich
- Department of Earth and Planetary Sciences, Weizmann Institute of Science , Rehovot 76100, Israel
| | - Sergey A Nizkorodov
- Department of Chemistry, University of California , Irvine, California 92697, United States
| | - Julia Laskin
- Physical Sciences Division, Pacific Northwest National Laboratory , Richland, Washington 99354, United States
| | - Alexander Laskin
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory , Richland, Washington 99354, United States
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60
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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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61
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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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He W, Chen M, Park JE, Hur J. Molecular diversity of riverine alkaline-extractable sediment organic matter and its linkages with spectral indicators and molecular size distributions. WATER RESEARCH 2016; 100:222-231. [PMID: 27192357 DOI: 10.1016/j.watres.2016.05.023] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 05/06/2016] [Accepted: 05/06/2016] [Indexed: 06/05/2023]
Abstract
Few studies have been conducted to examine the spatial heterogeneity of riverine sediment organic matter (SOM) at the molecular level. The present study explored the chemical and molecular heterogeneity of alkaline-extractable SOM from riverine sediments via multiple analytical tools including molecular composition, absorption and fluorescence spectra, and molecular size distributions. The riverine SOM revealed complex and diverse characteristics, exhibiting a great number of non-redundant formulas and high spatial variations. The molecular diversity was more pronounced for the sediments affected by a higher degree of anthropogenic activities. Unlike the cases of aquatic dissolved organic matter, highly-unsaturated structures with oxygen (HUSO) of SOM were more associated with the spectral and size features of humic-like (or terrestrial) substances than aromatic molecules were, cautioning the interpretation of the SOM molecules responsible for apparent indicators. Noting that a higher detection rate (DR) produces fewer common molecules, the common molecules of 23 different SOMs were determined at a reasonable DR value of 0.35, which accounted for a small portion (5.8%) of all detected molecules. They were mainly CHO compounds (>98%), which positively correlated with spectral indicators of biological production. Despite the low abundance, however, the ratios of aromatic to aliphatic substances could be indexed to classify the common molecules into several geochemical molecular groups with different degrees of the associations with the apparent spectral and size indicators.
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Affiliation(s)
- Wei He
- Department of Environment and Energy, Sejong University, Seoul 143-747, South Korea
| | - Meilian Chen
- Department of Environment and Energy, Sejong University, Seoul 143-747, South Korea
| | - Jae-Eun Park
- Research Group for Mass Spectrometry, Korea Basic Science Institute, Chungbuk 363-883, South Korea
| | - Jin Hur
- Department of Environment and Energy, Sejong University, Seoul 143-747, South Korea.
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Qi Y, Hempelmann R, Volmer DA. Two-dimensional mass defect matrix plots for mapping genealogical links in mixtures of lignin depolymerisation products. Anal Bioanal Chem 2016; 408:4835-43. [PMID: 27178557 PMCID: PMC4914518 DOI: 10.1007/s00216-016-9598-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 04/20/2016] [Accepted: 04/21/2016] [Indexed: 12/25/2022]
Abstract
Lignin is the second most abundant natural biopolymer, and lignin wastes are therefore potentially significant sources for renewable chemicals such as fuel compounds, as alternatives to fossil fuels. Waste valorisation of lignin is currently limited to a few applications such as in the pulp industry, however, because of the lack of effective extraction and characterisation methods for the chemically highly complex mixtures after decomposition. Here, we have implemented high resolution mass spectrometry and developed two-dimensional mass defect matrix plots as a data visualisation tool, similar to the Kendrick mass defect plots implemented in fields such as petroleomics. These 2D matrix plots greatly simplified the highly convoluted lignin mass spectral data acquired from Fourier transform ion cyclotron resonance (FTICR)–mass spectrometry, and the derived metrics provided confident peak assignments and strongly improved structural mapping of lignin decomposition product series from the various linkages within the lignin polymer after electrochemical decomposition. 2D mass defect matrix plot for a lignin sample after decomposition ![]()
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Affiliation(s)
- Yulin Qi
- Institute of Bioanalytical Chemistry, Saarland University, Campus B2.2, 66123, Saarbrücken, Germany
| | - Rolf Hempelmann
- Institute of Physical Chemistry, Saarland University, Campus B 22, 66123, Saarbrücken, Germany
| | - Dietrich A Volmer
- Institute of Bioanalytical Chemistry, Saarland University, Campus B2.2, 66123, Saarbrücken, Germany.
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Lv J, Zhang S, Wang S, Luo L, Cao D, Christie P. Molecular-Scale Investigation with ESI-FT-ICR-MS on Fractionation of Dissolved Organic Matter Induced by Adsorption on Iron Oxyhydroxides. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:2328-36. [PMID: 26815589 DOI: 10.1021/acs.est.5b04996] [Citation(s) in RCA: 231] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Adsorption by minerals is a common geochemical process of dissolved organic matter (DOM) which may induce fractionation of DOM at the mineral-water interface. Here, we examine the molecular fractionation of DOM induced by adsorption onto three common iron oxyhydroxides using electrospray ionization coupled with Fourier-transform ion cyclotron resonance mass spectrometry (ESI-FT-ICR-MS). Ferrihydrite exhibited higher affinity to DOM and induced more pronounced molecular fractionation of DOM than did goethite or lepidocrocite. High molecular weight (>500 Da) compounds and compounds high in unsaturation or rich in oxygen including polycyclic aromatics, polyphenols and carboxylic compounds had higher affinity to iron oxyhydroxides and especially to ferrihydrite. Low molecular weight compounds and compounds low in unsaturation or containing few oxygenated groups (mainly alcohols and ethers) were preferentially maintained in solution. This study confirms that the double bond equivalence and the number of oxygen atoms are valuable parameters indicating the selective fractionation of DOM at mineral and water interfaces. The results of this study provide important information for further understanding the behavior of DOM in the natural environment.
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Affiliation(s)
- Jitao Lv
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
| | - Shuzhen Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
| | - Songshan Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
| | - Lei Luo
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
| | - Dong Cao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China
| | - Peter Christie
- Agri-Environment Branch, Agri-Food and Biosciences Institute , Newforge Lane, Belfast BT9 5PX, United Kingdom
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NATSUIKE M, KIKUCHI T, LEE YP, ITO H, FUJII M, YOSHIMURA C, WATANABE T. Chemical Speciation and Bioavailability of Iron in Natural Waters - Linkage of Forest, River and Sea in View of Dynamics of Iron and Organic Matter. ACTA ACUST UNITED AC 2016. [DOI: 10.2965/jswe.39.197] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
| | - Tetsuro KIKUCHI
- School of Environment and Society, Tokyo Institute of Technology
- Ibaraki Kasumigaura Environmental Science Center
| | - Ying Ping LEE
- School of Environment and Society, Tokyo Institute of Technology
| | - Hiroaki ITO
- Graduate School of Science and Technology, Kumamoto University
- Faculty of Agriculture, Yamagata University
| | - Manabu FUJII
- School of Environment and Society, Tokyo Institute of Technology
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66
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Indexing Permafrost Soil Organic Matter Degradation Using High-Resolution Mass Spectrometry. PLoS One 2015; 10:e0130557. [PMID: 26068586 PMCID: PMC4467038 DOI: 10.1371/journal.pone.0130557] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 05/21/2015] [Indexed: 01/10/2023] Open
Abstract
Microbial degradation of soil organic matter (SOM) is a key process for terrestrial carbon cycling, although the molecular details of these transformations remain unclear. This study reports the application of ultrahigh resolution mass spectrometry to profile the molecular composition of SOM and its degradation during a simulated warming experiment. A soil sample, collected near Barrow, Alaska, USA, was subjected to a 40-day incubation under anoxic conditions and analyzed before and after the incubation to determine changes of SOM composition. A CHO index based on molecular C, H, and O data was utilized to codify SOM components according to their observed degradation potentials. Compounds with a CHO index score between -1 and 0 in a water-soluble fraction (WSF) demonstrated high degradation potential, with a highest shift of CHO index occurred in the N-containing group of compounds, while similar stoichiometries in a base-soluble fraction (BSF) did not. Additionally, compared with the classical H:C vs O:C van Krevelen diagram, CHO index allowed for direct visualization of the distribution of heteroatoms such as N in the identified SOM compounds. We demonstrate that CHO index is useful not only in characterizing arctic SOM at the molecular level but also enabling quantitative description of SOM degradation, thereby facilitating incorporation of the high resolution MS datasets to future mechanistic models of SOM degradation and prediction of greenhouse gas emissions.
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67
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Rüger CP, Sklorz M, Schwemer T, Zimmermann R. Characterisation of ship diesel primary particulate matter at the molecular level by means of ultra-high-resolution mass spectrometry coupled to laser desorption ionisation—comparison of feed fuel, filter extracts and direct particle measurements. Anal Bioanal Chem 2015; 407:5923-37. [DOI: 10.1007/s00216-014-8408-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 12/12/2014] [Indexed: 10/24/2022]
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68
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Yassine MM, Harir M, Dabek-Zlotorzynska E, Schmitt-Kopplin P. Structural characterization of organic aerosol using Fourier transform ion cyclotron resonance mass spectrometry: aromaticity equivalent approach. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2014; 28:2445-2454. [PMID: 25303473 DOI: 10.1002/rcm.7038] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 08/20/2014] [Accepted: 09/01/2014] [Indexed: 06/04/2023]
Abstract
RATIONALE A challenge of atmospheric particulate matter (PM) analysis is the understanding of the sources and chemistry of complex organic aerosols, especially the water-soluble organic compounds (WSOC) fraction, a key component of atmospheric fine PM (PM(2.5)). The sources of WSOC are not well understood and, thus, the molecular characterization of WSOC is important because it provides insight into aerosol sources and the underlying mechanisms of secondary organic aerosols formation and transformation. METHODS In this study, molecular characterization of WSOC was achieved using Fourier transform ion cyclotron resonance mass spectrometry. The aromaticity equivalent (X(c)), a new parameter calculated from the assigned molecular formula, is introduced to improve the identification and characterization of aromatic and condensed aromatic compounds in WSOC. Diesel PM (DPM) and atmospheric PM samples were used to study the applicability of the proposed method. RESULTS Threshold values of X(c) ≥2.5000 and X(c) ≥2.7143 are proposed as unambiguous minimum criteria for the presence of aromatics and condensed aromatics, respectively. By using these criteria, 36% of precursors were defined as aromatics and condensed aromatics in the DPM. For comparison, 21% of aromatic and condensed aromatic compounds were defined using the Aromaticity Index (AI) classification. The lower estimates by the AI approach are probably due to the failure to recognize aromatics and condensed aromatics with longer alkyl chains. The estimated aromatic and condensed aromatic fractions in the atmospheric aerosol samples collected in an industrial area affected by biomass burning events were 51.2 and 50.0%, respectively. CONCLUSIONS The advantage of employing this parameter is that X(c) would have a constant value for each proposed core structure regardless of the degree of alkylation, and thus visual representation and structural interpretations of the spectra become advantageous for characterizing and comparing complex samples. In addition, the proposed parameter complements the AI classification and identification of aromatic and condensed aromatic structures in complex matrices.
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Affiliation(s)
- Mahmoud M Yassine
- Analysis and Air Quality Section, Air Quality Research Division, Atmospheric Science and Technology Directorate, Science and Technology Branch, Environment Canada, 335 River Road, Ottawa, Ontario, Canada, K1A 0H3
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69
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Minor EC, Swenson MM, Mattson BM, Oyler AR. Structural characterization of dissolved organic matter: a review of current techniques for isolation and analysis. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2014; 16:2064-79. [PMID: 24668418 DOI: 10.1039/c4em00062e] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Natural dissolved organic matter (DOM) in aquatic systems plays many environmental roles: providing building blocks and energy for aquatic biota, acting as a sunscreen in surface water, and interacting with anthropogenic compounds to affect their ultimate fate in the environment. Such interactions are a function of DOM composition, which is difficult to ascertain due to its heterogeneity and the co-occurring matrix effects in most aquatic samples. This review focuses on current approaches to the chemical structural characterization of DOM, ranging from those applicable to bulk samples and in situ analyses (UV-visible spectrophotometry and fluorescence spectroscopy) through the concentration/isolation of DOM followed by the application of one or more analytical techniques, to the detailed separation and analysis of individual compounds or compound classes. Also provided is a brief overview of the main techniques used to characterize isolated DOM: mass spectrometry (MS), nuclear magnetic resonance mass spectrometry (NMR) and Fourier transform infrared spectroscopy (FTIR).
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Affiliation(s)
- Elizabeth C Minor
- Large Lakes Observatory, Department of Chemistry and Biochemistry, University of Minnesota Duluth, RLB 211, 2205 East 5th St, Duluth, MN 55812, USA.
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70
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Goff KL, Peru K, Wilson KE, Headley JV. Evaluation of biologically mediated changes in oil sands naphthenic acid composition by Chlamydomonas reinhardtii using negative-ion electrospray orbitrap mass spectrometry. JOURNAL OF PHYCOLOGY 2014; 50:727-735. [PMID: 26988456 DOI: 10.1111/jpy.12202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 04/08/2014] [Indexed: 06/05/2023]
Abstract
Industrial activity associated with oil-sands extraction in Canada's Athabasca region produces a variety of contaminants of concern, including naphthenic acid fraction components (NAFCs). NAFCs are a complex mixture of organic compounds that are poorly understood both in terms of their chemical composition and effects on the environment. NAFC toxicity in the unicellular green algae Chlamydomonas reinhardtii P.A.Dangeard was correlated with the presence of the algal cell wall. It was suggested that the toxicity of NAFCs in C. reinhardtii was due to surfactant effects. Surfactant-cell wall interactions are specific and governed by the compound class and structure, and by the nature of the biological material. Here, we investigate the effects of wildtype (WT) C. reinhardtii and two cell-wall mutants on specific classes of NAFCs when growing cultures were treated with a 100 mg · L(-1) solution of NAFCs. Changes in the NAFC composition in the media were examined using high resolution mass spectrometry over a period of 4 d. Algal mediated changes in the NAFCs were limited to specific classes of NAFCs. In particular, the removal of large, classical naphthenic acids, with a double bond equivalent of 8, was observed in WT C. reinhardtii cultures. The observed algal mediated changes in NAFC composition would have been masked by low resolution mass spectrometry and highlight the importance of this tool in examining bioremediation of complex mixtures of NAFCs.
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Affiliation(s)
- Kira L Goff
- Department of Biology and Toxicology Centre, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan, Canada, S7N 5E2
| | - Kerry Peru
- Environment Canada, National Hydrology Research Centre, 11 Innovation Blvd, Saskatoon, Saskatchewan, Canada, S7N 3H5
| | - Kenneth E Wilson
- Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan, Canada, S7N 5E2
| | - John V Headley
- Environment Canada, National Hydrology Research Centre, 11 Innovation Blvd, Saskatoon, Saskatchewan, Canada, S7N 3H5
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71
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Ahmed A, Kim S. Atmospheric pressure photo ionization hydrogen/deuterium exchange mass spectrometry--a method to differentiate isomers by mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2013; 24:1900-1905. [PMID: 24014151 DOI: 10.1007/s13361-013-0726-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 07/20/2013] [Accepted: 07/25/2013] [Indexed: 06/02/2023]
Abstract
In this report, a method for in-source hydrogen/deuterium (H/D) exchange at atmospheric pressure is reported. The method was named atmospheric pressure photo ionization hydrogen/deuterium exchange mass spectrometry (APPI HDX MS). H/D exchange was performed by mixing samples dissolved in toluene with CH3OD solvent and analyzing the mixture using atmospheric pressure photo ionization mass spectrometry (APPI-MS). The APPI HDX spectra obtained with contact times between the analyte solution and methanol-OD (CH3OD) of < 0.5 s or 1 h showed the same pattern of H/D exchange. Therefore, it was concluded that APPI HDX occurred in the source but not in the solution. The proposed method does not require a specific type of mass spectrometer and can be performed at atmospheric pressure. H/D exchange can be performed in any laboratory with a mass spectrometer and a commercial APPI source. Using this method, multiple H/D exchanges of aromatic hydrogen and/or H/D exchange of active hydrogen were observed. These results demonstrated that H/D exchange can be used to distinguish between isomers containing primary, secondary, and tertiary amines, as well as pyridine and pyrrole functional groups.
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Affiliation(s)
- Arif Ahmed
- Department of Chemistry, Kyungpook National University, Daegu, Republic of Korea
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72
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Ikeya K, Sleighter RL, Hatcher PG, Watanabe A. Fourier transform ion cyclotron resonance mass spectrometric analysis of the green fraction of soil humic acids. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:2559-2568. [PMID: 24123645 DOI: 10.1002/rcm.6718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 08/22/2013] [Accepted: 08/22/2013] [Indexed: 06/02/2023]
Abstract
RATIONALE The green fraction of soil humic acids (HAs), designated Pg, contains 4,9-dihydroxyperylene-3,10-quinone (DHPQ) as a chromophore. Although various naturally occurring DHPQ derivatives are known to occur and Pg-like absorption is observed in the UV-visible spectra of HAs from various types of soils worldwide, the chemical structure of Pg is still unknown. METHODS For a better understanding of the chemical composition of Pg, the pre-isolated (crude Pg) and purified Pg (G2) samples and three soil HAs with different degrees of humification were analyzed using negative-mode electrospray ionization coupled with Fourier transform ion cyclotron resonance mass spectrometry (FTICRMS) at 12 Tesla. The Pg samples were characterized using H/C-O/C ratios and based on the type and magnitude of the molecular formulae having DHPQ or related compounds as a potential structure. RESULTS The H/C-O/C diagram indicated that most of the lipids, proteins, other aliphatics, and lignin-like components were removed, while condensed aromatic components were concentrated during the purification process of crude Pg to G2 using Sephadex G-50. More than 27 molecular formulae resembling DHPQ, DHPQ substituted with varying numbers of carboxyl and/or hydroxyl groups, and phenyl-DHPQ derivatives were identified in both Pg samples. The peak magnitudes of these formulae in G2 (accounting for 40% of the total assigned magnitude) were greater than that in the crude Pg (21%). Most of the 27 molecular formulae were also detected in the three soil HAs, suggesting a common existence of Pg-related compounds in various soil HAs. CONCLUSIONS The important molecular formulae of Pg components were estimated utilizing FTICRMS. Copyright © 2013 John Wiley & Sons, Ltd.
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Affiliation(s)
- Kosuke Ikeya
- Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan; Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA, 23529, USA
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Lin S, Kanawati B, Liu L, Witting M, Li M, Huang J, Schmitt-Kopplin P, Cai Z. Ultrahigh resolution mass spectrometry-based metabolic characterization reveals cerebellum as a disturbed region in two animal models. Talanta 2013; 118:45-53. [PMID: 24274269 DOI: 10.1016/j.talanta.2013.09.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 09/07/2013] [Accepted: 09/16/2013] [Indexed: 12/27/2022]
Abstract
In the previous reports about cognitive dysfunction, cerebellum was thought to be a less affected tissue by genetic or environmental alterations in comparison to other tissues in the brain including hippocampus under the same conditions. In this work, we investigated two types of metabolomic alterations inside the cerebellum tissue. The first one addressed the differences in the metabolomics profiles between Transgenic (Tg) CRND8 of Alzheimer's disease mice and non-transgenic (non-Tg) littermates. The second one addressed the metabolic differences between wild type mice exposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and wild type mice which are not exposed to this toxic compound. For these two investigations, ultrahigh resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR/MS) was implemented. As a result, the significant changes of each comparison were tentatively annotated by the high mass accuracy generated from the measurements in the negative ion mode. The biosynthesis of amino acids was also enhanced pronouncedly, and perturbation of purine metabolism was also observed in Tg mice compared to non-Tg littermates. In another animal model, the reduced levels of amino acids were found whereas the intermediate levels in purine metabolism and fatty acids including fatty acid conjugated metabolites were elevated in cerebellar tissues of mice exposed to TCDD compared to control group. Collectively, it was demonstrated that FT-ICR/MS was a powerful tool for interpretation of the elemental compositions of the peaks, revealing that the metabolic perturbations in cerebellar tissues of mice were induced by either genetic manipulation or environmental factor. Therefore, the non-targeted approach, alternatively, provides various metabolic phenotypes for the systems-level mirror of the complex etiology of neurotoxicity in the cerebellum.
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Affiliation(s)
- Shuhai Lin
- Department of Chemistry, Hong Kong Baptist University, Hong Kong SAR, China
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74
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Zhurov KO, Kozhinov AN, Tsybin YO. Hexagonal Class Representation for Fingerprinting and Facile Comparison of Petroleomic Samples. Anal Chem 2013; 85:5311-5. [DOI: 10.1021/ac400418j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Konstantin O. Zhurov
- Biomolecular Mass Spectrometry Laboratory, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Anton N. Kozhinov
- Biomolecular Mass Spectrometry Laboratory, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Yury O. Tsybin
- Biomolecular Mass Spectrometry Laboratory, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
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Lin S, Liu H, Kanawati B, Liu L, Dong J, Li M, Huang J, Schmitt-Kopplin P, Cai Z. Hippocampal metabolomics using ultrahigh-resolution mass spectrometry reveals neuroinflammation from Alzheimer's disease in CRND8 mice. Anal Bioanal Chem 2013; 405:5105-17. [PMID: 23494273 DOI: 10.1007/s00216-013-6825-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 02/02/2013] [Accepted: 02/06/2013] [Indexed: 12/24/2022]
Abstract
In the wake of genomics, metabolomics characterizes the small molecular metabolites revealing the phenotypes induced by gene mutants. To address the metabolic signatures in the hippocampus of the amyloid-beta (Aβ) peptides produced in transgenic (Tg) CRND8 mice, high-field ion cyclotron resonance-Fourier transform mass spectrometry supported by LC-LTQ-Orbitrap was introduced to profile the extracted metabolites. More than 10,000 ions were detected in the mass profile for each sample. Subsequently, peak alignment and the 80% rule followed by feature selection based on T score computation were performed. The putative identification was also conducted using the highly accurate masses with isotopic distribution by interfacing the MassTRIX database as well as MS/MS fragmentation generated in the LTQ-Orbitrap after chromatographic separation. Consequently, 58 differentiating masses were tentatively identified while up to 44 differentiating elemental compositions could not be biologically annotated in the databases. Nonetheless, of the putatively annotated masses, eicosanoids in arachidonic acid metabolism, fatty acid beta-oxidation disorders as well as disturbed glucose metabolism were highlighted as metabolic traits of Aβ toxicity in Tg CRND8 mice. Furthermore, a web-based bioinformatic tool was used for simulation of the metabolic pathways. As a result of the obtained metabolic signatures, the arachidonic acid metabolism dominates the metabolic perturbation in hippocampal tissues of Tg CRND8 mice compared to non-Tg littermates, indicating that Aβ toxicity functions neuroinflammation in hippocampal tissue and new theranostic opportunities might be offered by characterization of altered arachidonic acid metabolism for Alzheimer's disease.
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Affiliation(s)
- Shuhai Lin
- Department of Chemistry, Hong Kong Baptist University, Hong Kong, SAR, China
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76
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Lobodin VV, Marshall AG, Hsu CS. Compositional Space Boundaries for Organic Compounds. Anal Chem 2012; 84:3410-6. [DOI: 10.1021/ac300244f] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Vladislav V. Lobodin
- Ion Cyclotron Resonance Program,
National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive,
Tallahassee, Florida 32310-4005, United States
| | - Alan G. Marshall
- Ion Cyclotron Resonance Program,
National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive,
Tallahassee, Florida 32310-4005, United States
- Department of Chemistry and
Biochemistry, Florida State University, 95 Chieftain Way, Tallahassee,
Florida 32306, United States
| | - Chang Samuel Hsu
- Future Fuels Institute, Florida
State University, Tallahassee, Florida 32310, United States
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77
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Ahmed A, Choi CH, Choi MC, Kim S. Mechanisms Behind the Generation of Protonated Ions for Polyaromatic Hydrocarbons by Atmospheric Pressure Photoionization. Anal Chem 2011; 84:1146-51. [DOI: 10.1021/ac202858k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Arif Ahmed
- Department of Chemistry, Kyungpook National University, Daegu, 702-701, Republic
of Korea
| | - Cheol Ho Choi
- Department of Chemistry, Kyungpook National University, Daegu, 702-701, Republic
of Korea
- Green-Nano Materials Research Center, Daegu, 702-701, Republic of Korea
| | - Myoung Choul Choi
- Korean Basic Science Institute, Ochang-Eup, 804-1, Republic of Korea
| | - Sunghwan Kim
- Department of Chemistry, Kyungpook National University, Daegu, 702-701, Republic
of Korea
- Green-Nano Materials Research Center, Daegu, 702-701, Republic of Korea
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78
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Cho Y, Kim YH, Kim S. Planar Limit-Assisted Structural Interpretation of Saturates/Aromatics/Resins/Asphaltenes Fractionated Crude Oil Compounds Observed by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. Anal Chem 2011; 83:6068-73. [DOI: 10.1021/ac2011685] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yunju Cho
- Kyungpook National University, Department of Chemistry, Daegu, 702-701, Korea
| | - Young Hwan Kim
- Division of Mass Spectrometry Research, Korea Basic Science Institute, Ochang, 863-883, Korea
- Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, 305-764, Korea
| | - Sunghwan Kim
- Kyungpook National University, Department of Chemistry, Daegu, 702-701, Korea
- Green-Nano Materials Research Center, Daegu, 702-701, Korea
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