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Utilizing Hydrogen Carrier Gas for Fast GC-MS

Hydrogen as a carrier gas for GC-TOFMS analysis is explored.

Evaluation of HR-TOFMS with the Multi-Mode Ion Source and the Automated Direct Inlet Probe

ASMS 2021

Breath Volatile Compounds in Asthma Patients

Jean-Francois Focant from the University of Liege (Belgium) discusses utilizing two-dimensional gas chromatography to study volatile compounds in breath samples of asthma patients.

Ion Source Robustness on the StayClean Ion Source

High Throughput Qualitative and Quantitative Analysis of Drugs of Abuse in Human Urine

Illicit drug use by teenagers and young adults continues to increase in the United States. Many forensic laboratories are experiencing increased workloads and reduced resources.

Accurate Deconvolution by Exploiting Differential Expressions

ASMS 2017A set of chromatography-mass spectrometry data for multiple related samples may be considered as a tensor with spectral, retention, and experimental dimensions.

Determining High-Concentration Aromatic Compounds in Gasolines (ASTM D5769) Using CG-TOFMS

International Symposium on Chromatography (ISC) 2016ASTM D5769 is a widely accepted standard method used in the petroleum industry for determination of benzene, toluene, and total aromatics in finished gasolines by GC-MS. A common difficulty encountered with this method is the concern with saturation of the ion source, which leads to nonlinearity in calibration curves, especially for the quantification of the high-concentration aromatics, such as toluene.

Forensics Analysis Workflow using EI & CI in HRTOFMS

Controlled substances, such as marijuana, cocaine, heroin and methamphetamines, are commonly seized by law enforcement officials and routinely analyzed by forensic laboratories. Explore how HRTOFMS using Electron and Chemical Ionization can analyze these substances.

Breath Analysis for Disease Interrogation

Breath volatomes were analyzed via GCxGC-TOFMS to demonstrate possible future of metabolomic studies.

Automated Sample Derivatization for High-Throughput Drug Testing by SAMHSA Guidelines

Pittcon 2011Urine samples were analyzed according to Substance Abuse and Mental Health Service Administration guidelines for workplace drug testing.