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Metwally H, Yu J, Theriault R, Kolwich JL, Ellis R, Ross AC, Oleschuk RD. Crown ether dopant to reduce ion suppression and improve detection in the liquid microjunction surface sampling probe. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2024; 38:e9889. [PMID: 39159929 DOI: 10.1002/rcm.9889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 07/25/2024] [Accepted: 07/28/2024] [Indexed: 08/21/2024]
Abstract
RATIONALE Sodium and potassium are required in agar media for the growth of some microorganisms (e.g., marine bacteria). However, alkali cations are a significant source of contamination for mass spectrometry causing ion suppression and adduct formation. Conventionally, salts can be removed before mass spectrometric analysis with appropriate and often lengthy sample preparation. The direct mass spectrometric sampling of bacterial colonies grown on agar media seeks to minimize or eliminate sample preparation to improve workflow. However, this may exacerbate ion suppression and contamination since these metal cations will degrade spectral quality and limit the rapid profiling of microbial metabolites. Different approaches are needed to sequester sodium and potassium ions to minimize unwanted background interferences. Herein, we use crown ethers (CEs) in combination with a liquid microjunction surface sampling probe (LMJ-SSP) to directly sample the surface of the bacterial colonies from two marine bacteria species (Pseudoalteromonas rubra DSM6842 and Pseudoalteromonas tunicata DSM 14096). CEs (e.g., 18-crown-6 or 15-crown-5) are added to the carrier solvent of the LMJ-SSP, the chemical noise is reduced, and spectra are easier to interpret. METHODS The liquid microjunction formed at the tip of LMJ-SSP was used to directly touch bacterial colonies on agar. The carrier solvent was either methanol (100%) or methanol: H2O (50:49.9%) with or without 0.01% CEs. Information-theoretic measures are employed to investigate qualitative changes between spectra before and after adding CEs. RESULTS Our work demonstrates the capability of CEs to reduce background interferences within the direct profiling of bacterial colonies from agar plates. The data obtained from both P. rubra DSM6842 and P. tunicata DSM 14096 show that CEs can be used to mitigate the salty background and improve compound detection. CONCLUSION Our approach can be implemented in natural product discovery using LMJ-SSP to allow fast and accurate detection of interesting/novel compounds.
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Affiliation(s)
- Haidy Metwally
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada
| | - Jian Yu
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada
| | - Rachel Theriault
- School of Computing, Queen's University, Kingston, Ontario, Canada
| | | | - Randy Ellis
- School of Computing, Queen's University, Kingston, Ontario, Canada
| | - Avena C Ross
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada
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Perez JJ, Brady JJ, Broderick A, Horan A, Pedersen K, Wilkins BP. Rapid Quantification of Ammonium Nitrate and Urea Nitrate Using Liquid Chromatography-High-Resolution Orbitrap Mass Spectrometry. Anal Chem 2024; 96:1419-1426. [PMID: 38240047 DOI: 10.1021/acs.analchem.3c03245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
Resolution and sensitivity improvements in mass spectrometry technology have enabled renewed attempts at solving challenging analytical issues. One such issue involves the analysis of energetic ionic species. Energetic ionic species make up an important class of chemical materials, and a more robust and versatile analytical platform would provide tremendous value to the analytical community. Initial attempts at quantification of energetic ionic species employed high-resolution time-of-flight measurements with crown ether (CE) complexation and flow injection analysis (FIA). In this investigation, ammonium nitrate (AN) and urea nitrate (UN) in the presence of a crown ether complexation agent were explored by using high-resolution orbitrap mass spectrometry. Product ion scans of these signature complexes reveal positive identification of these energetic ionic species. Finally, quantification was demonstrated for both flow injection and liquid chromatography-mass spectrometry (LC-MS) analysis, suggesting the capability for routine and rapid analysis of these energetic ionic materials.
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Affiliation(s)
- Johnny J Perez
- U.S. Department of Homeland Security, Science & Technology Directorate, Transportation Security Laboratory, William J. Hughes Technical Center, Bldg. 315, Atlantic City, New Jersey 08405, United States
| | - John J Brady
- U.S. Department of Homeland Security, Science & Technology Directorate, Transportation Security Laboratory, William J. Hughes Technical Center, Bldg. 315, Atlantic City, New Jersey 08405, United States
| | - Alicia Broderick
- U.S. Department of Homeland Security, Science & Technology Directorate, Transportation Security Laboratory, William J. Hughes Technical Center, Bldg. 315, Atlantic City, New Jersey 08405, United States
| | - Andrew Horan
- Signature Science, LLC, 2819 Fire Rd. Suite A, Egg Harbor Township, New Jersey 08234, United States
| | - Kevin Pedersen
- Signature Science, LLC, 2819 Fire Rd. Suite A, Egg Harbor Township, New Jersey 08234, United States
| | - Benjamin P Wilkins
- U.S. Department of Homeland Security, Science & Technology Directorate, Transportation Security Laboratory, William J. Hughes Technical Center, Bldg. 315, Atlantic City, New Jersey 08405, United States
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To KC, Ben-Jaber S, Parkin IP. Recent Developments in the Field of Explosive Trace Detection. ACS NANO 2020; 14:10804-10833. [PMID: 32790331 DOI: 10.1021/acsnano.0c01579] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Explosive trace detection (ETD) technologies play a vital role in maintaining national security. ETD remains an active research area with many analytical techniques in operational use. This review details the latest advances in animal olfactory, ion mobility spectrometry (IMS), and Raman and colorimetric detection methods. Developments in optical, biological, electrochemical, mass, and thermal sensors are also covered in addition to the use of nanomaterials technology. Commercially available systems are presented as examples of current detection capabilities and as benchmarks for improvement. Attention is also drawn to recent collaborative projects involving government, academia, and industry to highlight the emergence of multimodal screening approaches and applications. The objective of the review is to provide a comprehensive overview of ETD by highlighting challenges in ETD and providing an understanding of the principles, advantages, and limitations of each technology and relating this to current systems.
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Affiliation(s)
- Ka Chuen To
- Department of Chemistry, University College London, 20 Gordon Street, Bloomsbury, London WC1H 0AJ, United Kingdom
| | - Sultan Ben-Jaber
- Department of Science and Forensics, King Fahad Security College, Riyadh 13232, Saudi Arabia
| | - Ivan P Parkin
- Department of Chemistry, University College London, 20 Gordon Street, Bloomsbury, London WC1H 0AJ, United Kingdom
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Klapec DJ, Czarnopys G, Pannuto J. Interpol review of detection and characterization of explosives and explosives residues 2016-2019. Forensic Sci Int Synerg 2020; 2:670-700. [PMID: 33385149 PMCID: PMC7770463 DOI: 10.1016/j.fsisyn.2020.01.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 01/23/2020] [Indexed: 02/06/2023]
Abstract
This review paper covers the forensic-relevant literature for the analysis and detection of explosives and explosives residues from 2016-2019 as a part of the 19th Interpol International Forensic Science Managers Symposium. The review papers are also available at the Interpol website at: https://www.interpol.int/Resources/Documents#Publications.
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Affiliation(s)
- Douglas J. Klapec
- United States Department of Justice, Bureau of Alcohol, Tobacco, Firearms and Explosives, Forensic Science Laboratory, 6000 Ammendale Road, Ammendale, MD, 20705, USA
| | - Greg Czarnopys
- 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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Valadbeigi Y, Azizmohammadi S, Ilbeigi V. Small Host–Guest Systems in the Gas Phase: Tartaric Acid as a Host for both Anionic and Cationic Guests in the Atmospheric Pressure Chemical Ionization Source of Ion Mobility Spectrometry. J Phys Chem A 2020; 124:3386-3397. [DOI: 10.1021/acs.jpca.0c00118] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Younes Valadbeigi
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
| | - Sima Azizmohammadi
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
| | - Vahideh Ilbeigi
- TOF Tech. Pars Company, Isfahan Science & Technology Town, Isfahan, Iran
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Recent advances in mass spectrometry studies of non-covalent complexes of macrocycles - A review. Anal Chim Acta 2019; 1081:32-50. [DOI: 10.1016/j.aca.2019.06.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 12/29/2022]
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Hu J, Guan QY, Wang J, Jiang XX, Wu ZQ, Xia XH, Xu JJ, Chen HY. Effect of Nanoemitters on Suppressing the Formation of Metal Adduct Ions in Electrospray Ionization Mass Spectrometry. Anal Chem 2017; 89:1838-1845. [DOI: 10.1021/acs.analchem.6b04218] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jun Hu
- State Key Laboratory
of Analytical Chemistry
for Life Science and Collaborative Innovation Center of Chemistry
for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Qi-Yuan Guan
- State Key Laboratory
of Analytical Chemistry
for Life Science and Collaborative Innovation Center of Chemistry
for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jiang Wang
- State Key Laboratory
of Analytical Chemistry
for Life Science and Collaborative Innovation Center of Chemistry
for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xiao-Xiao Jiang
- State Key Laboratory
of Analytical Chemistry
for Life Science and Collaborative Innovation Center of Chemistry
for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Zeng-Qiang Wu
- State Key Laboratory
of Analytical Chemistry
for Life Science and Collaborative Innovation Center of Chemistry
for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xing-Hua Xia
- State Key Laboratory
of Analytical Chemistry
for Life Science and Collaborative Innovation Center of Chemistry
for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jing-Juan Xu
- State Key Laboratory
of Analytical Chemistry
for Life Science and Collaborative Innovation Center of Chemistry
for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hong-Yuan Chen
- State Key Laboratory
of Analytical Chemistry
for Life Science and Collaborative Innovation Center of Chemistry
for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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