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Klapec DJ, Czarnopys G, Pannuto J. Interpol review of the analysis and detection of explosives and explosives residues. Forensic Sci Int Synerg 2023; 6:100298. [PMID: 36685733 PMCID: PMC9845958 DOI: 10.1016/j.fsisyn.2022.100298] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Douglas J. Klapec
- Arson and Explosives Section I, United States Department of Justice, Bureau of Alcohol, Tobacco, Firearms and Explosives, Forensic Science Laboratory, 6000 Ammendale Road, Ammendale, MD, 20705, USA
| | - Greg Czarnopys
- Forensic Services, United States Department of Justice, Bureau of Alcohol, Tobacco, Firearms and Explosives, Forensic Science Laboratory, 6000 Ammendale Road, Ammendale, MD, 20705, USA
| | - Julie Pannuto
- United States Department of Justice, Bureau of Alcohol, Tobacco, Firearms and Explosives, Forensic Science Laboratory, 6000 Ammendale Road, Ammendale, MD, 20705, USA
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Purification of Two Taxanes from Taxus cuspidata by Preparative High-Performance Liquid Chromatography. SEPARATIONS 2022. [DOI: 10.3390/separations9120446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
In the present study, an effective method of preparative high-performance liquid chromatography (Prep-HPLC) was established to purify two taxanes in Taxus cuspidata. During the experimental operation, the effects of flow rate, injection volume, and column temperature on the purity of 10-deacetyltaxol (10-DAT) and paclitaxel (PTX) were investigated, and the optimized conditions were as follows: flow rate of 10 mL/min, injection volume of 0.5 mL, and column temperature of 30 °C. Under these conditions, the purity of 10-DAT and PTX reached 95.33% and 99.15%, respectively. The purified products were characterized by scanning electron microscopy (SEM), high-performance liquid chromatography (HPLC), and electrospray ionization-high resolution mass spectrometry (ESI-HRMS). The results demonstrated that preparative HPLC can effectively purify 10-DAT and PTX from Taxus cuspidata with a purity of >95%, which was suitable for the large-scale preparation of 10-DAT and PTX.
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Source determination of homemade ammonium nitrate using ATR-FTIR spectroscopy, trace elemental analysis and chemometrics. Forensic Chem 2022. [DOI: 10.1016/j.forc.2022.100411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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