Academic literature on the topic 'Heterocyclic compounds. Mass spectrometry'

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Journal articles on the topic "Heterocyclic compounds. Mass spectrometry"

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Chmovzh, Timofey, Ekaterina Knyazeva, Olga Ustimenko, and Oleg Rakitin. "3,6-Dibromopyridazine-4,5-diamine." Molbank 2019, no. 1 (2019): M1053. http://dx.doi.org/10.3390/m1053.

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Dihalogenated derivatives of 1,2,5-chalcogenadiazoles fused with benzene or heterocyclic rings are of interest as starting compounds for photovoltaic materials. The 1,2,5-chalcogenadiazole ring in these heterocycles was most commonly prepared from the corresponding ortho-diamine moiety. In this communication, 3,6-dibromopyridazine-4,5-diamine was prepared via the reaction of 4,7-dibromo[1,2,5]thiadiazolo[3,4-d]pyridazine with sodium methoxide in THF by heating at reflux for four hours. The structure of the newly synthesized compound was established by means of high resolution mass-spectrometry
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Chmovzh, Timofey N., and Oleg A. Rakitin. "7-Bromo-[1,2,5]selenadiazolo[3,4-d]pyridazin-4(5H)-one." Molbank 2021, no. 2 (2021): M1229. http://dx.doi.org/10.3390/m1229.

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New heterocyclic systems containing 1,2,5-chalcogenadiazoles are of great interest for the creation of organic photovoltaic materials and biologically active compounds. In this communication, 3,6-dibromopyridazine-4,5-diamine was investigated in reaction with selenium dioxide in order to obtain 4,7-dibromo-[1,2,5]selenadiazolo[3,4-d]pyridazine. We found that 7-bromo-[1,2,5]selenadiazolo[3,4-d]pyridazin-4(5H)-one, the first representative of the new heterocyclic system, was isolated as a hydrolysis product of the corresponding 4,7-dibromoderivative. The structure of the newly synthesized compou
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Khakwani, Samia, Samina Aslam, Mehrzadi Noureen Shahi, Alice M. Rolim Bernardino, and Misbahul Ain Khan. "Mass Spectrometry of Heterocyclic Compounds: Benzo[b]pyrazolo[3,4-b]-1,6-naphthyridines." Asian Journal of Chemistry 28, no. 11 (2016): 2385–87. http://dx.doi.org/10.14233/ajchem.2016.19946.

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Xie, Y. J., Z. F. He, E. Zhang, and H. J. Li. "Technical note: Characterization of key volatile odorants in rabbit meat using gas chromatography mass spectrometry with simultaneous distillation extraction." World Rabbit Science 24, no. 4 (2016): 313. http://dx.doi.org/10.4995/wrs.2016.4464.

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<p>This study explored the key volatile compounds in both male and female rabbit meat. Simultaneous distillation extraction with dichloromethane was adopted to extract the volatile compounds in Hyla rabbit meat. A total of 35 volatile compounds were identified by gas chromatography–mass spectrometry and quantified with 2, 4, 6-thimethylpyridine as internal standard. Seventeen volatile aldehydes, 4 alcohols, 2 ketones, 2 acids, 1 heterocyclic compound, 2 alkanes and 7 esters were detected. Hexanal, heptanal, octanal, nonanal, (E, E)-2, 4-decadienal, 1-octen-3-ol and (Z)-2-decenal were the
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Mazzotta, Michael G., Jason O. E. Young, Jesse W. Evans, et al. "Direct analysis in real time mass spectrometry of fused ring heterocyclic organometallic compounds." Analytical Methods 7, no. 9 (2015): 4003–7. http://dx.doi.org/10.1039/c5ay00295h.

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Karai, Oumaima, Sara Hajib, Serigne Abdou Khadir Fall та ін. "Comparative Study of Synthesis, Structural and Antioxidant Activity In Vitro of Some New Carboxylic α,α-diaminodiesters Derivatives". European Journal of Advanced Chemistry Research 2, № 3 (2021): 6–13. http://dx.doi.org/10.24018/ejchem.2021.2.3.64.

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Considering the richness of heterocyclic chemistry, and the diversity of applications it possesses, in the present work we were interested in preparing new polyfunctional α,α-diaminodiesters derived from glycine, via the N-alkylation reaction of methyl 2-azido-2-benzamidoacetate with a series of heterocyclic and non-heterocyclic carboxylic aminoesters, using different bases. The structures of the synthesized molecules were characterized by 1D and 2D NMR spectroscopy, mass spectrometry (MS-ESI) and elemental analysis. Two compounds from this series were isolated as single crystals and their che
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Zhou, Jinjie, Tao Feng, and Ran Ye. "Differentiation of Eight Commercial Mushrooms by Electronic Nose and Gas Chromatography-Mass Spectrometry." Journal of Sensors 2015 (2015): 1–14. http://dx.doi.org/10.1155/2015/374013.

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Volatile profiles of eight mushrooms were characterized by gas chromatography-mass spectrometry and electronic nose analysis. Volatile compounds including 11 alcohols, 11 ketones, 15 aldehydes, 3 sulfur compounds and alkenes, 8 terpenes, 7 acid and esters, 5 heterocyclic compounds, 20 aromatic compounds, and 4 other compounds were identified. The overall aroma properties of the mushrooms were analyzed by the electronic nose. Results indicated that the e-nose sensors have the ability to accurately respond to different mushrooms with similar fingerprint chromatograms. The relationship between th
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李, 柚. "The Application of High Performance Liquid Chromatography-Mass Spectrometry Analysis of Heterocyclic Compounds." Hans Journal of Chemical Engineering and Technology 03, no. 04 (2013): 142–47. http://dx.doi.org/10.12677/hjcet.2013.34026.

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Adeeva, Valeriya G., Marina S. Bobyleva, Nickolay S. Kulikov, Valentina G. Kharchenko, and Lev M. Yudovich. "Gas chromatography—mass spectrometry of the stereoisomers of heterocyclic compounds. Part 1. Perhydrothioxanthenes." J. Chem. Soc., Perkin Trans. 2, no. 6 (1992): 965–69. http://dx.doi.org/10.1039/p29920000965.

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Huck, Christian W., Verena Huck-Pezzei, Rania Bakry, et al. "Capillary Electrophoresis Coupled To Mass Spectrometry for Forensic Analysis." Open Chemical Engineering Journal 1, no. 1 (2007): 30–43. http://dx.doi.org/10.2174/1874123100701010030.

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In this review the most important techniques, which are developed to hyphenate capillary electrophoresis to mass spectrometry (CE-MS), suitable for forensic analysis, are summarized. Analytes of interest are divided into four main parts, namely, compounds with amine containing side chains, compounds with N-containing saturated ring structures, other heterocycles and peptides. Sample pre-treatments and direct injection modes used in CE-MS for forensic analysis are briefly discussed from critical point of view. Special emphasis is placed to point out the advantages of mass spectrometric detectio
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Dissertations / Theses on the topic "Heterocyclic compounds. Mass spectrometry"

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Shah, Sana. "Synthesis and Characterization of Manganese Pyridazyl Complexes." TopSCHOLAR®, 2013. http://digitalcommons.wku.edu/theses/1298.

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Heterocyclic’s and their fused-ring derivatives have been of interest for their use in electronic materials due to their ease of production, synthetic versatility, and low cost compared to traditional inorganic materials like silicon. Pyridazines have been found to be useful in catalysis gas storage, polymeric sensors and biological mimetics. When a transition-metal is fused into a synthesized pyridazine, unique properties such as conductivity and optics are allowed. In this work, synthesized pyridazine complexes will be analyzed by mass spectroscopy, elemental analysis, nuclear magnetic reson
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McComb, Mark Errol. "Characterization of biological compounds by mass spectrometry." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0027/NQ51655.pdf.

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Miketova, Petra 1967. "Mass spectrometry of compounds of biological interest." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/288810.

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Mass spectrometric methods, including EI, CI, FAB and ESI LC/MS have been surveyed as tools for identification and characterization of compounds of natural origin exhibiting biological activity. Bioactive catechins isolated from green tea were analyzed by mass spectral methods: EI spectra provided both molecular weight and structural information, including epimer differentiation. FAB mass spectrometry gave both molecular weight and structural information on all compounds. ESI LC/MS provided unambiguous MW information on all compounds and some additional structural data on compounds ECG and EGC
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Tolun, E. "Fast atom bombardment mass spectrometry of organometallic compounds." Thesis, University of Kent, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370368.

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Soliman, Laiel. "Capillary electrophoresis-mass spectrometry separation of isomeric biological compounds." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43419.

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Current prostate cancer (PCa) diagnosis based on prostate-specific antigen (PSA) has been gradually losing its credibility over the last decade due to contradictory results in published literature and clinical practice. Recently, a group of potential PCa biomarkers in urine, particularly sarcosine, was found to increase significantly as the cancer progressed to metastasis. In Chapter 2, we report a simple, robust, and reproducible capillary electrophoresis–electrospray ionization–tandem mass spectrometry (CE–ESI-MS/MS) method for the determination of sarcosine and other representative potent
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Guan, Shanshan. "Mass Spectrometry-based Fragmentation Chemistry of Small Biological Compounds." Ohio University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1616802495967559.

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Mullen, Steven Lawrence. "Fourier transform ion cyclotron resonance mass spectrometry of organometallic compounds /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487325740718905.

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Wilkins, John Patrick Gordon. "The analysis of pesticides & related compounds using mass spectrometry." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/83140/.

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The determination of pesticides and related materials in food and environmental samples is important and presents an enduring challenge to analytical chemists. For practicality it is important that as many pesticides as possible are compared using a common technique. Mass spectrometry is the method of choice for multi-residue detection techniques, because of its sensitivity and specificity. This thesis comprises a detailed analysis and critical review of the mass spectrometric behaviour of over 600 commonly encountered pesticides and related compounds. The work described in this thesis was und
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Viviers, Hendrik Jacobus. "Analysis of Illicit Compounds by Gas Chromatography-Mass Spectrometry in Wastewater." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/46251.

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The occurrence in wastewater of pharmaceuticals, drugs of abuse, and the metabolites produced through the use of such compounds, is becoming a question of concern. The recreational abuse of illicit compounds in South Africa has increased tremendously over the past years and is currently a serious problem among the youth. Data on the use of illicit drugs and the amounts consumed is limited to information coming from law enforcement agencies, rehabilitation centres, and self-reported cases. Thus, an objective means of measuring the actual drug use of a specific geographical area needs to b
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Zimmerman, Michael L. "Measurement of arsenobetaine and arsenocholine in fish tissue by fast atom bombardment mass spectrometry." Full text open access at:, 1988. http://content.ohsu.edu/u?/etd,176.

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Books on the topic "Heterocyclic compounds. Mass spectrometry"

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Mass spectrometry of heterocyclic compounds. 2nd ed. Wiley, 1985.

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Practical organic mass spectrometry. Wiley, 1985.

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Henderson, William. Mass Spectrometry of Inorganic and Organometallic Compounds. John Wiley & Sons, Ltd., 2005.

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Henderson, William, and J. Scott McIndoe. Mass Spectrometry of Inorganic, Coordination and Organometallic Compounds. John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470014318.

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Francesca, Modugno, ed. Organic mass spectrometry in art and archaeology. Wiley, 2009.

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Ashcroft, Alison E. Ionization methods in organic mass spectrometry. Royal Society of Chemistry, 1997.

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Scott, McIndoe J., ed. Mass spectrometry of inorganic, coordination and organometallic compounds: Tools--techniques--tips. J. Wiley, 2005.

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Henderson, William. Mass spectrometry of inorganic, coordination and organometallic compounds: Tools - techniques - tips. J. Wiley, 2004.

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Chapman, J. R. Practical organic mass spectrometry: A guide for chemical and biochemical analysis. 2nd ed. J. Wiley, 1993.

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Xian dai zhi pu yu sheng ming ke xue yan jiu. Ke xue chu ban she, 2013.

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Book chapters on the topic "Heterocyclic compounds. Mass spectrometry"

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Pretsch, Ernö, Philippe Bühlmann, and Martin Badertscher. "Mass Spectrometry." In Structure Determination of Organic Compounds. Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-62439-5_8.

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Pretsch, Ernoe, Philippe Bühlmann, and Christian Affolter. "Mass Spectrometry." In Structure Determination of Organic Compounds. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-04201-4_7.

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Pretsch, Ernö, Philippe Bühlmann, and Martin Badertscher. "Mass Spectrometry." In Structure Determination of Organic Compounds. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-93810-1_8.

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Saito, Kunihiko. "Platelet-Activating Factor and Related Compounds." In Mass Spectrometry. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-1173-5_9.

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Gevers, E. Ch Th. "Organometallic Compounds." In Mass Spectrometry in Environmental Sciences. Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2361-7_16.

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Desmarchelier, J. M., and M. J. Lacey. "Organophosphorus Compounds." In Mass Spectrometry in Environmental Sciences. Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2361-7_21.

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Bowie, John H. "The Fragmentations of (M-H)− Ions Derived from Organic Compounds." In Experimental Mass Spectrometry. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4899-2569-5_1.

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Poli, Diana. "Determination of Chlorinated Compounds in Dialysis Water and in Biological Fluids/Matrices." In Mass Spectrometry Handbook. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118180730.ch29.

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Sundström, Göran, and Bo Jansson. "DDT and Related Compounds." In Mass Spectrometry in Environmental Sciences. Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2361-7_13.

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Rudolph, Jochen. "Gas Chromatography-Isotope Ratio Mass Spectrometry." In Volatile Organic Compounds in the Atmosphere. Blackwell Publishing Ltd, 2007. http://dx.doi.org/10.1002/9780470988657.ch10.

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Conference papers on the topic "Heterocyclic compounds. Mass spectrometry"

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Bukharina, A. B., M. Y. Kochevalina, A. V. Pento, Ya O. Simanovsky, E. I. Rodionova, and S. M. Nikiforov. "Laser mass spectrometry of volatile organic compounds for diagnosis of pathological processes." In 2020 International Conference Laser Optics (ICLO). IEEE, 2020. http://dx.doi.org/10.1109/iclo48556.2020.9285453.

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Lewis, Sam, John Storey, Raynella Connatser, Scott Curran, and Melanie Moses-DeBusk. "Detection of Polar Compounds Condensed on Particulate Matter Using Capillary Electrophoresis-Mass Spectrometry." In WCX SAE World Congress Experience. SAE International, 2020. http://dx.doi.org/10.4271/2020-01-0395.

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Jiang, Jing, Xing Fan, and Xian-Yong Wei. "Molecular Characterization of Heteroatom-Containing Compounds in an Anthracite Using ESI-Orbitrap Mass Spectrometry." In Annual International Conference on Chemistry, Chemical Engineering and Chemical Process ( CCECP 2016 ). Global Science & Technology Forum ( GSTF ), 2016. http://dx.doi.org/10.5176/2301-3761_ccecp16.41.

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Soboleva, A. V., E. V. Kissel, G. Paudel, et al. "Analysis of reactive carbonyl compounds in plant extracts by ultra high performance chromatography-mass spectrometry." In IX Congress of society physiologists of plants of Russia "Plant physiology is the basis for creating plants of the future". Kazan University Press, 2019. http://dx.doi.org/10.26907/978-5-00130-204-9-2019-405.

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Sagandykova, Gulyaim. "APPLICATION OF GAS CHROMATOGRAPHY AND MASS-SPECTROMETRY FOR ANALYSIS OF WINE VOLATILE AND SEMI-VOLATILE COMPOUNDS." In 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2015/b52/s20.007.

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Mullen, Christopher, Jennifer Ha, Michael J. Coggiola, and Harald Oser. "Detection of Explosive and Explosive Related Compounds (ERCs) Using Ultrafast Laser Photoionization Time of Flight Mass Spectrometry." In Laser Applications to Chemical, Security and Environmental Analysis. OSA, 2006. http://dx.doi.org/10.1364/lacsea.2006.ma3.

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Jin, Shiwei, Yan Huang, and Qiong Yi. "Determination of estrogen-like compounds in fish liver tissue by solid-phase extraction-gas chromatography-mass spectrometry." In 2011 International Conference on Electric Technology and Civil Engineering (ICETCE). IEEE, 2011. http://dx.doi.org/10.1109/icetce.2011.5776233.

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Liu Jingke, Li Xingfeng, Zhao Wei, and Zhang Yuzong. "Influence of different heating time on the volatile compounds of millet porridge by gas chromatography-mass spectrometry." In 2011 International Conference on New Technology of Agricultural Engineering (ICAE). IEEE, 2011. http://dx.doi.org/10.1109/icae.2011.5943926.

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Schmutzer, G., V. Avram, I. Feher, L. David, Z. Moldovan, and Mihaela D. Lazar. "Determination of some volatile compounds in alcoholic beverage by headspace solid-phase microextraction gas chromatography – mass spectrometry." In PROCESSES IN ISOTOPES AND MOLECULES (PIM 2011). AIP, 2012. http://dx.doi.org/10.1063/1.3681962.

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Jarett P. Spinhirne, Jacek A. Koziel, and and Norbert K. Chirase. "Characterization of Volatile Organic Compounds in Bovine Breath Using Solid-Phase Microextraction and Gas Chromatography-Mass Spectrometry." In 2003, Las Vegas, NV July 27-30, 2003. American Society of Agricultural and Biological Engineers, 2003. http://dx.doi.org/10.13031/2013.14092.

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Reports on the topic "Heterocyclic compounds. Mass spectrometry"

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Leibman, C. P. Seconday ion mass spectrometry of aromatic compounds in acidic mixtures. Office of Scientific and Technical Information (OSTI), 1988. http://dx.doi.org/10.2172/6291161.

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Bernhardt, J. Analysis of volatile organic compounds in groundwater samples by gas chromatography-mass spectrometry. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/149976.

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Bae, Sue Y., Mark D. Winemiller, and Fu-Lian Hsu. Mass Spectral Studies of 1-(2-Chloroethoxy)-2-[(2-chloroethyl)thio] Ethane and Related Compounds Using Gas ChromatographyMass Spectrometry and Gas ChromatographyTriple-Quadrupole Mass Spectrometry. Defense Technical Information Center, 2016. http://dx.doi.org/10.21236/ad1003011.

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Coulombe, S., G. Jean, P. Chantal, and S. Kaliaguine. Characterization of products from the conversion of furanic compounds to hydrocarbons on zeolite using gas chromatography/mass spectrometry and gas chromatography/Fourier transform infrared spectrometry. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/302618.

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Martinez, A., W. Spall, and B. Smith. A gas chromatograph/mass spectrometry method for determining isotopic distributions in organic compounds used in the chemical approach to stable isotope separation. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/5114527.

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Cai, Lingshuang, Jacek A. Koziel, Yin-Cheung Lo, and Steven J. Hoff. Characterization of Volatile Organic Compounds and Odorants Associated with Swine Barn Particulate Matter Using Solid-Phase Microextraction and Gas Chromatography-Mass Spectrometry-Olfactometry. Iowa State University, 2007. http://dx.doi.org/10.31274/ans_air-180814-275.

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Cai, Lingshuang, Jacek A. Koziel, Jeremiah Davis, Yin-Cheung Lo, and Hongwei Xin. Characterization of Volatile Organic Compounds and Odors by in vivo Sampling of Beef Cattle Rumen Gas Using Solid Phase Microextraction and Gas Chromatography-Mass Spectrometry-Olfactometry. Iowa State University, 2007. http://dx.doi.org/10.31274/ans_air-180814-58.

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : determination of polycyclic aromatic hydrocarbon compounds in sediment by gas chromatography/mass spectrometry. US Geological Survey, 2004. http://dx.doi.org/10.3133/wri034318.

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Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of wastewater compounds by polystyrene-divinylbenzene solid-phase extraction and capillary-column gas chromatography/mass spectrometry. US Geological Survey, 2002. http://dx.doi.org/10.3133/wri20014186.

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