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Search Publications by: Edward Sisco (Fed)

Displaying 76 - 90 of 90

Standardized Measurements of Collection Efficiency from Wipe-Sampling of Trace Explosives

April 10, 2017

Author(s)

Jennifer R. Verkouteren, Jeffrey A. Lawrence, Matthew E. Staymates, Edward R. Sisco

One of the limiting steps to detecting traces of explosives at screening venues is effective collection of the sample. Wipe-sampling is the most common procedure for collecting traces of explosives, and standardized measurements of collection efficiency

Quantifying Stability of Trace Explosives under Different Environmental Conditions

April 1, 2017

Author(s)

Edward R. Sisco, Marcela N. Najarro, Daniel V. Samarov, Jeffrey A. Lawrence

This work investigates the stability of trace deposits of six explosives (ETN, PETN, RDX, HMX, TNT, and Tetryl) to determine environmental stabilities and lifetimes. Explosives were inkjet printed directly onto PTFE coated fiberglass substrates and exposed

Rapid Analysis of Trace Drugs and Metabolites Using a Thermal Desorption DART-MS Configuration

August 13, 2016

Author(s)

Edward R. Sisco, Thomas P. Forbes, Matthew E. Staymates, John G. Gillen

The need to rapidly analyze trace narcotic samples for screening or confirmatory purposes is of increasing desire to the forensic, homeland security, and criminal justice sectors. This work presents a novel method for the detection of trace drugs and

Detection and identification of sugar alcohol sweeteners by ion mobility spectrometry

June 23, 2016

Author(s)

Thomas Forbes, Edward Sisco, Christopher Browne

The rapid and sensitive detection of sugar alcohols sweeteners was demonstrated using ion mobility spectrometry (IMS). IMS provides a valuable compromise in sensitivity, cost, and analysis speed between centralized liquid chromatography-mass spectrometry

Detection of Low Molecular Weight Adulterants in Beverages by Direct Analysis in Real Time Mass Spectrometry

March 17, 2016

Author(s)

Edward Sisco, Jeffrey Dake

Direct Analysis in Real Time Mass Spectrometry (DART-MS) has been used to detect the presence of non-narcotic adulterants in beverages. The non-narcotic adulterants that were examined in this work incorporated a number low molecular weight alcohols

Analysis of Potential Homemade Nitrate Ester Explosive By-products via Direct Analysis in Real Time Mass Spectrometry

December 9, 2015

Author(s)

Edward Sisco, Thomas Forbes

This work demonstrates the ability of off-axis direct analysis in real time mass spectrometry (DART-MS) to detect five representative homemade nitrate ester explosive by-products. Instrumental parameters that were examined included mass spectrometer

In-source collision induced dissociation of inorganic explosives for mass spectrometric signature detection and chemical imaging

September 23, 2015

Author(s)

Thomas P. Forbes, Edward R. Sisco

In-source collision induced dissociation (CID) coupled with laser desorption/ionization mass spectrometry (LDI-MS) demonstrated the trace detection, bulk quantification, and chemical imaging of inorganic explosives and components. The incorporation of in

Development of a Chemically Relevant Artificial Fingerprint Material

September 16, 2015

Author(s)

Edward Sisco, Jessica L. Staymates, Katherine Schilling, John Gillen

The development of a chemically relevant artificial fingerprint material as well as a preliminary method for fingerprint deposition is discussed herein. More specifically the improvement of an artificial sweat material, an artificial sebaceous material

Strategies for Potential Age Dating of Fingerprints through the Diffusion of Sebum Molecules on a Non-porous Surface

July 17, 2015

Author(s)

Shinichiro Muramoto, Edward Sisco

Age dating of fingerprints can have a significant impact in forensic science, as it has the potential to facilitate the judicial process by assessing the relevance of a fingerprint found in a crime scene. However, no reliable method currently exists that

Quantifying the Degradation of TNT and RDX in a Saline Environment with and without UV-Exposure

April 14, 2015

Author(s)

Edward Sisco, Marcela N. Najarro, Candice Bridge, Roman Aranda

Terrorist attacks in a maritime setting, such as the bombing of the USS Cole in 2000, or the detection of underwater mines requires the development of proper protocols to collect and analyze explosive material from a marine environment. In addition to

Trace detection and competitive ionization of erythritol tetranitrate in mixtures using direct analysis in real time mass spectrometry

April 9, 2015

Author(s)

Thomas P. Forbes, Edward R. Sisco

Direct analysis in real time (DART) mass spectrometry was used for trace detection of the nitrate ester explosive, erythritol tetranitrate (ETN), and its sugar alcohol precursor, erythritol. The present investigation revealed the impact of competitive

Rapid Detection of Sugar Alcohol Precursors and Corresponding Nitrate Ester Explosives using Direct Analysis in Real Time Mass Spectrometry

March 30, 2015

Author(s)

Edward Sisco, Thomas Forbes

This work highlights the rapid detection of nitrate ester explosives and their sugar alcohol precursors by direct analysis in real time mass spectrometry (DART-MS) using an off-axis geometry. Demonstration of the effect of various parameters, such as ion

Mass Spectrometry Detection and Imaging of Organic and Inorganic Explosive Device Signatures using Desorption Electro-Flow Focusing Ionization

June 26, 2014

Author(s)

Thomas Forbes, Edward Sisco

We demonstrate the coupling of desorption electro-flow focusing ionization (DEFFI) with in-source collision induced dissociation (CID) for the mass spectrometric (MS) detection and imaging of explosive device components, including both organic, e.g

Chemical Imaging of Artificial Fingerprints by Desorption Electro-Flow Focusing Ionization Mass Spectrometry

May 19, 2014

Author(s)

Thomas Forbes, Edward Sisco

Desorption electro-flow focusing ionization (DEFFI) mass spectrometry was used to image chemical distributions of endogenous, e.g., fatty acids, and trace exogenous compounds, e.g., explosives, narcotics and lotions, in deposited and lifted artificial

Evaluation of C60 Secondary Ion Mass Spectrometry for the Chemical Analysis and Imaging of Fingerprints

January 22, 2013

Author(s)

Edward R. Sisco, Leonard Demovanville, John G. Gillen

The feasibility of using C60 Cluster Primary Ion Bombardment Secondary Ion Mass Spectrometry (C60 SIMS) for the analysis of the chemical composition of fingerprints is evaluated. It was found that C60 SIMS could be used to detect and image the spatial

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