{"id":{"repo_id":"purdue-thes","oai_identifier":"oai:docs.lib.purdue.edu:open_access_dissertations-2284"},"canonical_url":"https://search.dev.ndltd.org/etd/purdue-thes/oai:docs.lib.purdue.edu:open_access_dissertations-2284","repository":{"repo_id":"purdue-thes","name":"Purdue University","base_url":"https://docs.lib.purdue.edu/do/oai/"},"display":{"title":"Mass Spectrometric Studies on Lignin Sequencing and Fast Pyrolysis, Functional-Group Selective Ion-Molecule Reactions and Reactivity of Bi- and Triradicals","abstract":"Due to the high sensitivity, selectivity and speed, mass spectrometry (MS) has proved to be an invaluable tool for mixture analysis and structural elucidation of mixture components. Tandem mass spectrometry (MS/MS) utilizing collision-activated dissociation (CAD) has become the technique of choice for structural elucidation of unknown analytes. The coupling of MS/MS with high performance liquid chromatography (HPLC) has allowed trace level analysis of components in very complex mixtures. Analysis of mixtures of lignin degradation products is a problematic area for mass spectrometry due to the highly complex lignin linkages present. Hence, study of lignin model compounds with varies linkage types is very helpful for the structural elucidation of unnknown lignins. Gas phase ion-molecule reaction can be useful in study of reaction kinetics and mechanism and even in probing the functional groups in unknown molecules. The functional group selective ion-molecule reaction has great potential for unknown drug metabolite identification","abstract_html":"Due to the high sensitivity, selectivity and speed, mass spectrometry (MS) has proved to be an invaluable tool for mixture analysis and structural elucidation of mixture components. Tandem mass spectrometry (MS/MS) utilizing collision-activated dissociation (CAD) has become the technique of choice for structural elucidation of unknown analytes. The coupling of MS/MS with high performance liquid chromatography (HPLC) has allowed trace level analysis of components in very complex mixtures. Analysis of mixtures of lignin degradation products is a problematic area for mass spectrometry due to the highly complex lignin linkages present. Hence, study of lignin model compounds with varies linkage types is very helpful for the structural elucidation of unnknown lignins. Gas phase ion-molecule reaction can be useful in study of reaction kinetics and mechanism and even in probing the functional groups in unknown molecules. The functional group selective ion-molecule reaction has great potential for unknown drug metabolite identification","abstract_has_math":false,"creators":["Sheng, Huaming"],"institution":null,"degree_name":"Doctor of Philosophy (PhD)","degree_level":"Dissertation","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":["Hilkka I Kenttämaa","Scott A. McLuckey","Chengde Mao","Yu Xia"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-01-01T08:00:00Z","date_published":"2014-01-01T08:00:00Z","updated_at":"2026-07-24T03:54:17Z","subjects":["Fast Pyrolysis","Ion-molecule Reactions","Lignin Sequencing","Mass Spectrometer","Tri-radicals"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://docs.lib.purdue.edu/open_access_dissertations/1068","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Hilkka I Kenttämaa","Scott A. McLuckey","Chengde Mao","Yu Xia"]},{"key":"dc:creator","label":"Author","values":["Sheng, Huaming"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Doctor of Philosophy (PhD)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Fast Pyrolysis","Ion-molecule Reactions","Lignin Sequencing","Mass Spectrometer","Tri-radicals"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://docs.lib.purdue.edu/open_access_dissertations/1068"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Due to the high sensitivity, selectivity and speed, mass spectrometry (MS) has proved to be an invaluable tool for mixture analysis and structural elucidation of mixture components. Tandem mass spectrometry (MS/MS) utilizing collision-activated dissociation (CAD) has become the technique of choice for structural elucidation of unknown analytes. The coupling of MS/MS with high performance liquid chromatography (HPLC) has allowed trace level analysis of components in very complex mixtures. Analysis of mixtures of lignin degradation products is a problematic area for mass spectrometry due to the highly complex lignin linkages present. Hence, study of lignin model compounds with varies linkage types is very helpful for the structural elucidation of unnknown lignins. Gas phase ion-molecule reaction can be useful in study of reaction kinetics and mechanism and even in probing the functional groups in unknown molecules. The functional group selective ion-molecule reaction has great potential for unknown drug metabolite identification"]},{"key":"dc:title","label":"Title","values":["Mass Spectrometric Studies on Lignin Sequencing and Fast Pyrolysis, Functional-Group Selective Ion-Molecule Reactions and Reactivity of Bi- and Triradicals"]}]}],"canonical_facts":{"dc:contributor":["Hilkka I Kenttämaa","Scott A. McLuckey","Chengde Mao","Yu Xia"],"dc:creator":["Sheng, Huaming"],"dc:description.abstract":["Due to the high sensitivity, selectivity and speed, mass spectrometry (MS) has proved to be an invaluable tool for mixture analysis and structural elucidation of mixture components. Tandem mass spectrometry (MS/MS) utilizing collision-activated dissociation (CAD) has become the technique of choice for structural elucidation of unknown analytes. The coupling of MS/MS with high performance liquid chromatography (HPLC) has allowed trace level analysis of components in very complex mixtures. Analysis of mixtures of lignin degradation products is a problematic area for mass spectrometry due to the highly complex lignin linkages present. Hence, study of lignin model compounds with varies linkage types is very helpful for the structural elucidation of unnknown lignins. Gas phase ion-molecule reaction can be useful in study of reaction kinetics and mechanism and even in probing the functional groups in unknown molecules. The functional group selective ion-molecule reaction has great potential for unknown drug metabolite identification"],"dc:identifier":["https://docs.lib.purdue.edu/open_access_dissertations/1068"],"dc:subject":["Fast Pyrolysis","Ion-molecule Reactions","Lignin Sequencing","Mass Spectrometer","Tri-radicals"],"dc:title":["Mass Spectrometric Studies on Lignin Sequencing and Fast Pyrolysis, Functional-Group Selective Ion-Molecule Reactions and Reactivity of Bi- and Triradicals"],"thesis:degree_discipline":["Chemistry"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Doctor of Philosophy (PhD)"]},"updated_at":"2026-07-24T03:54:17Z"}