{"id":{"repo_id":"york","oai_identifier":"oai:yorkspace.library.yorku.ca:10315/29930"},"canonical_url":"https://search.dev.ndltd.org/etd/york/oai:yorkspace.library.yorku.ca:10315/29930","repository":{"repo_id":"york","name":"York University","base_url":"https://yorkspace.library.yorku.ca/oai/request"},"display":{"title":"Evaluating the Utility of an Atmospheric Pressure Chemical Ionization Mass Spectrometer for Detecting Organic Peroxides During Beta-Pinene Ozonolysis Experiments","abstract":"The intent of this study was to use a positive-ion atmospheric pressure chemical ionization mass spectrometer ((+) APCI-MS/MS) to detect organic peroxide products formed during β-pinene ozonolysis experiments. Detection was based on utilizing the neutral-loss scan (NLS) analysis mode of the APCI-MS/MS to observe ion signals exhibiting unique mass losses of 34 u. This mass loss was considered exclusive to protonated organic peroxides containing a hydroperoxy moiety. Given this observation, the NLS analysis mode was used to selectively detect organic peroxides formed during β-pinene ozonolysis experiments. Overall, six organic peroxide structures were proposed. Further product-ion scan analysis on the six proposed structures revealed additional unique mass losses of 32 u and 62 u that could be use in combination with 34 u NLS analysis to selectively detect organic peroxides. The results from this study can assist in ascertaining organic peroxide contribution to secondary organic aerosol for future ozonolysis experiments.","abstract_html":"The intent of this study was to use a positive-ion atmospheric pressure chemical ionization mass spectrometer ((+) APCI-MS/MS) to detect organic peroxide products formed during β-pinene ozonolysis experiments. Detection was based on utilizing the neutral-loss scan (NLS) analysis mode of the APCI-MS/MS to observe ion signals exhibiting unique mass losses of 34 u. This mass loss was considered exclusive to protonated organic peroxides containing a hydroperoxy moiety. Given this observation, the NLS analysis mode was used to selectively detect organic peroxides formed during β-pinene ozonolysis experiments. Overall, six organic peroxide structures were proposed. Further product-ion scan analysis on the six proposed structures revealed additional unique mass losses of 32 u and 62 u that could be use in combination with 34 u NLS analysis to selectively detect organic peroxides. The results from this study can assist in ascertaining organic peroxide contribution to secondary organic aerosol for future ozonolysis experiments.","abstract_has_math":false,"creators":["Jameer, Amanda Ophelia"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Hastie, Donald R."],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-08-28","date_published":"2015-08-28","updated_at":"2026-07-24T06:33:58Z","subjects":["Atmospheric chemistry","Analytical chemistry","Chemistry"],"languages":["en"],"rights":["Author owns copyright, except where explicitly noted. Please contact the author directly with licensing requests."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10315/29930","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Hastie, Donald R."]},{"key":"dc:creator","label":"Author","values":["Jameer, Amanda Ophelia"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-08-28T15:04:07Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-08-28T15:04:07Z"]},{"key":"dc:date.issued","label":"Date","values":["2015-08-28"]},{"key":"dc:type","label":"Dc Type","values":["Electronic Thesis or Dissertation"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Atmospheric chemistry","Analytical chemistry","Chemistry"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Author owns copyright, except where explicitly noted. Please contact the author directly with licensing requests."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10315/29930"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The intent of this study was to use a positive-ion atmospheric pressure chemical ionization mass spectrometer ((+) APCI-MS/MS) to detect organic peroxide products formed during β-pinene ozonolysis experiments. Detection was based on utilizing the neutral-loss scan (NLS) analysis mode of the APCI-MS/MS to observe ion signals exhibiting unique mass losses of 34 u. This mass loss was considered exclusive to protonated organic peroxides containing a hydroperoxy moiety. Given this observation, the NLS analysis mode was used to selectively detect organic peroxides formed during β-pinene ozonolysis experiments. Overall, six organic peroxide structures were proposed. Further product-ion scan analysis on the six proposed structures revealed additional unique mass losses of 32 u and 62 u that could be use in combination with 34 u NLS analysis to selectively detect organic peroxides. The results from this study can assist in ascertaining organic peroxide contribution to secondary organic aerosol for future ozonolysis experiments."]},{"key":"dc:title","label":"Title","values":["Evaluating the Utility of an Atmospheric Pressure Chemical Ionization Mass Spectrometer for Detecting Organic Peroxides During Beta-Pinene Ozonolysis Experiments"]}]}],"canonical_facts":{"dc:contributor.advisor":["Hastie, Donald R."],"dc:creator":["Jameer, Amanda Ophelia"],"dc:date.accessioned":["2015-08-28T15:04:07Z"],"dc:date.available":["2015-08-28T15:04:07Z"],"dc:date.issued":["2015-08-28"],"dc:description.abstract":["The intent of this study was to use a positive-ion atmospheric pressure chemical ionization mass spectrometer ((+) APCI-MS/MS) to detect organic peroxide products formed during β-pinene ozonolysis experiments. Detection was based on utilizing the neutral-loss scan (NLS) analysis mode of the APCI-MS/MS to observe ion signals exhibiting unique mass losses of 34 u. This mass loss was considered exclusive to protonated organic peroxides containing a hydroperoxy moiety. Given this observation, the NLS analysis mode was used to selectively detect organic peroxides formed during β-pinene ozonolysis experiments. Overall, six organic peroxide structures were proposed. Further product-ion scan analysis on the six proposed structures revealed additional unique mass losses of 32 u and 62 u that could be use in combination with 34 u NLS analysis to selectively detect organic peroxides. The results from this study can assist in ascertaining organic peroxide contribution to secondary organic aerosol for future ozonolysis experiments."],"dc:identifier.uri":["http://hdl.handle.net/10315/29930"],"dc:language.iso":["en"],"dc:rights":["Author owns copyright, except where explicitly noted. Please contact the author directly with licensing requests."],"dc:subject":["Atmospheric chemistry","Analytical chemistry","Chemistry"],"dc:title":["Evaluating the Utility of an Atmospheric Pressure Chemical Ionization Mass Spectrometer for Detecting Organic Peroxides During Beta-Pinene Ozonolysis Experiments"],"dc:type":["Electronic Thesis or Dissertation"]},"updated_at":"2026-07-24T06:33:58Z"}