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Such circumstances include accidental or intentionally set cooking oil fires, fires involving triglyceride\u2010based \u201ceco\u201d fire log products, and spontaneous ignition fires that involve drying oils on rags. Many forensic laboratories utilize gas chromatography\u2010mass spectrometry following fatty acid methyl esterification to identify triglyceride residues in fire debris extracts. This study explores an alternate approach, which involves the identification of intact triglycerides by liquid chromatography\u2010mass spectrometry\u2010mass spectrometry (LC\u2010MS\/MS). 52 triglyceride\u2010based oils and fats (22 different types) were analyzed by LC\u2010MS\/MS using multiple reaction monitoring to investigate variation in triglyceride content between different brands and types of oil and fat. Selected oils were then degraded by exposure to air, typical cooking conditions and\/or fire conditions to simulate samples that are typically encountered by Fire Debris Analysts in fire investigation cases. Triglycerides were identified in all pristine and degraded oil samples, and relative peak areas for degraded samples often resembled their pristine oil counterparts. In samples where relative peak area differences were noted, more predominant degradation was observed for triglycerides with a higher proportion of poly\u2010unsaturated fatty acids. Variability in triglyceride content between different brands and types of oil are discussed, as well as factors affecting the identification of triglyceride peaks in commercial oil samples, as compared to the corresponding analytical standard.<\/jats:p>","DOI":"10.1111\/1556-4029.14612","type":"journal-article","created":{"date-parts":[[2020,11,2]],"date-time":"2020-11-02T16:17:19Z","timestamp":1604333839000},"page":"534-546","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Identification of triglycerides in liquid and fire debris samples by triple quadrupole liquid chromatography\u2010mass spectrometry"],"prefix":"10.1111","volume":"66","author":[{"given":"Craig M.","family":"Bryant","sequence":"first","affiliation":[{"name":"Centre of Forensic Sciences Toronto Ontario Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Josephine M.","family":"Warnica","sequence":"additional","affiliation":[{"name":"University of McGill Montreal Quebec Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rachel","family":"Chen","sequence":"additional","affiliation":[{"name":"Centre of Forensic Sciences Toronto Ontario Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cara","family":"Shepard","sequence":"additional","affiliation":[{"name":"Centre of Forensic Sciences Toronto Ontario Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,11,2]]},"reference":[{"key":"e_1_2_7_2_1","first-page":"736","volume-title":"Encyclopedia of food, science and technology","author":"Crosby TG","year":"2000"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1556-4029.2006.00220.x"},{"issue":"4","key":"e_1_2_7_4_1","first-page":"230","article-title":"The role of self\u2010heating as a cause of laundry fires","volume":"27","author":"Dixon BM","year":"1994","journal-title":"Can Soc Forensic Sci J"},{"key":"e_1_2_7_5_1","unstructured":"EvansM WintersK.The effects of burning and mould growth on the analysis of fire logs. 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