A
Angela S Mohrhaus
Researcher at Food and Drug Administration
Publications - 5
Citations - 151
Angela S Mohrhaus is an academic researcher from Food and Drug Administration. The author has contributed to research in topics: Selected ion monitoring & Chemistry. The author has an hindex of 3, co-authored 5 publications receiving 131 citations.
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Journal ArticleDOI
The chemical interconversion of GHB and GBL: forensic issues and implications.
Laura A. Ciolino,Mantai Z. Mesmer,R D Satzger,A C Machal,Heather A. McCauley,Angela S Mohrhaus +5 more
TL;DR: These studies show that hydrolysis of GBL to GHB does occur in aqueous-based solutions, with samples and time frames that are relevant to forensic testing, and implications for forensic testing are discussed.
Journal ArticleDOI
Screening and determination of polycyclic aromatic hydrocarbons in seafoods using QuEChERS-based extraction and high-performance liquid chromatography with fluorescence detection.
Samuel R. Gratz,Laura A. Ciolino,Angela S Mohrhaus,Bryan M. Gamble,Jill M Gracie,David S. Jackson,John P Roetting,Heather A. McCauley,Douglas T. Heitkemper,Fred L. Fricke,Walter J. Krol,Terri L. Arsenault,Jason C. White,Michele M Flottmeyer,Yoko S Johnson +14 more
TL;DR: The chromatographic method uses a polymeric C18 stationary phase designed for PAH analysis with gradient elution, and it resolves 15 U.S. Environmental Protection Agency priority parent PAHs in fewer than 20 min.
Journal ArticleDOI
EVALI Vaping Liquids Part 1: GC-MS Cannabinoids Profiles and Identification of Unnatural THC Isomers.
TL;DR: In this article, the GC-MS analysis was conducted using a validated, published method in which the cannabinoids were identified as the trimethylsilyl derivatives after separation on a commercial 35% silphenylene phase.
Identification and Determination of Carisoprodol in Tablets by Liquid Chromatography/Mass Spectrometry
TL;DR: A method for the identification and determination of carisoprodol in tablet dosage form is described in this paper, where tablets were ground and carisopsoprodols were extracted using acetonitrile with sonication.
Journal ArticleDOI
EVALI Vaping Liquids Part 2: Mass Spectrometric Identification of Diluents and Additives
Laura A. Ciolino,Travis M. Falconer,Tracy L Ranieri,Jana L Brueggemeyer,Allison M Taylor,Angela S Mohrhaus +5 more
TL;DR: In this paper, the authors presented results obtained for the GC-MS identification of numerous vaping liquid additives in a large subset of ca. 300 Cannabis vaping liquids, including vitamin E acetate, medium chain triglycerides oil (MCT oil), polyethylene glycols, squalane, triethyl citrate, dipropylene glycol dibenzoate, pine rosin acids and sucrose acetate isobutyrate (SAIB).