Detection of Explosives in Muddy Water The AccuTOF time-of-flight mass spectrometer equipped with Direct Analysis in Real Time (DART™) has been used to detect a wide variety of explosives in or on a variety of materials ranging from solutions to samples deposited on surfaces ranging from ABS plastic to metal, clothing and cardboard. Detection is rapid, specific, and sensitive. February 23, 2020 4. Forensics, 5. Homeland Security, AccuTOF™ DART®, Application Note, Mass Spectrometry (MS) 0 Comment Read More >>
Detection of Chemical Warfare Agents on Surfaces Please see the following publication: “Versatile New Ion Source for the Analysis of Materials in Open Air under Ambient Conditions” Robert B. Cody, James A. Laramee and H. Dupont Durst, Analytical Chemistry 77 (8), 2297- 2302, 2005 February 23, 2020 4. Forensics, 5. Homeland Security, AccuTOF™ DART®, Application Note, Mass Spectrometry (MS) 0 Comment Read More >>
DART Contamination Resistance: Analysis of Compounds in Saturated Salt and Buffer Solutions DART provides very simple mass spectra that are free of multiple charging and alkali metal cation adducts such as [M+Na]+ and [M+K]. This facilitates identification of target compounds in mixtures and simplifies assignment of elemental compositions for unknowns. February 23, 2020 9. Miscellaneous, AccuTOF™ DART®, Application Note, Mass Spectrometry (MS) 0 Comment Read More >>
DART (Direct Analysis in Real Time) Applications Notebook Includes 44 application notes in the categories of Introduction and fundamentals, Drug Analysis, [Food, Flavors, and Fragrances], Forensics, Homeland Security, Industrial Materials, and Organic Chemistry. February 23, 2020 AccuTOF™ DART®, Application Note, Mass Spectrometry (MS) 0 Comment Read More >>
DART Analysis of Aspirin: Correcting a Misapprehension In a recently published comparison of the ambient ionization techniques direct analysis in real time (DART™) and DESI, it was reported that a protonated molecule was not observed for DART, whereas the protonated molecule could be observed for DESI and DAPCI. This is an incorrect observation, resulting from the use of different experimental conditions for DART than were used for the other two techniques. Mass spectra of aspirin measured on a JEOL AccuTOF-DART™ mass spectrometer under the correct operating conditions are shown here. All assignments for the mass spectral peaks were confirmed by exact mass measurements. February 23, 2020 AccuTOF™ DART®, Application Note, Mass Spectrometry (MS) 0 Comment Read More >>
Clandestine Methamphetamine Labs: Rapid Impurity Profiling by AccuTOF-DART™ Methamphetamine is a Schedule II Controlled Substance that is illegally manufactured in clandestine labs. There are several common synthetic pathways in use. For this study, methamphetamine was synthesized from phenyl-2-propanone by the (1) Leukart synthesis or (2) Reductive Amination, or from ephedrine or pseudoephedrine by the (3) Nagai, (4) Birch, and (5) Edme syntheses. Each of these reaction sequences resulted in unique impurity profiles1-3 that can be used by law enforcement to track the activities of clan labs, distribution networks, and trafficking patterns. The AccuTOF-DART was used to examine the starting materials, reaction mixtures, and final products from each reaction scheme. February 23, 2020 4. Forensics, AccuTOF™ DART®, Application Note, Mass Spectrometry (MS) 0 Comment Read More >>
Chemical Reaction Monitoring with the AccuTOF-DART™ Mass Spectrometer DART provides a convenient means for monitoring the progress of chemical reactions. Reactants, intermediates, products and byproducts can be detected by simply dipping a glass rod into the reaction pot and then placing the rod in front of the DART ion source. The AccuTOF's ability to measure accurate masses and isotopic abundances makes it possible to confirm or identify the elemental compositions of peaks in the mass spectra. Here we show the use of AccuTOF-DART to monitor the acetylation of 1,2-hexanediol as a function of time. February 23, 2020 7. Organic Synthesis, AccuTOF™ DART®, Application Note, Mass Spectrometry (MS) 0 Comment Read More >>
Chemical Analysis of Fingerprints Fingerprints contain a great deal of chemical information that is not often exploited for forensic analysis. DART can detect and identify the chemical components of fingerprints, often providing information about what substances a subject has been handling. February 23, 2020 4. Forensics, AccuTOF™ DART®, Application Note, Mass Spectrometry (MS) 0 Comment Read More >>
Analysis of stobilurins in wheat grains using DART-TOFMS Strobilurins, systemic pesticides originated from natural fungicidal derivatives, play an important role in control of various plant pathogens. Because of their unique protective properties, significant yield enhancements and longer retention of green leaf tissue, strobilurins have been widely used in agriculture since their introduction on the market in 1992. As other pesticides, these compounds are involved in control and monitoring surveys undertaken by regulation authorities. February 23, 2020 3. Food, Flavors, Fragrances, AccuTOF™ DART®, Application Note, Mass Spectrometry (MS) 0 Comment Read More >>
Analysis of Organic Contaminant on Metal Surface DART can ionize organic substance on solid surface in atmospheric pressure. By utilizing this feature, we analyzed organic contaminant adhered to a metal part. February 23, 2020 6. Industrial Materials, AccuTOF™ DART®, Application Note, Mass Spectrometry (MS) 0 Comment Read More >>