GC Detectors
- Auto Gain with the Pulsed Flame Photometric Detector (PFPD)
- Operating Parameters for the Thermal Conductivity Detector (TCD)
- Primer on Flame Ionization Detectors (FID)
- PFPD Tuning App
- Pulsed Flame Photometric Detector (PFPD) Equimolar Responses for Sulfur Analytes
Biogas and Biomethane
- Calibration Standards for Measurement of Toxic Organics in Biomethane Using Permeation Tubes
- Calibration Standards for Measurement of Volatile Siloxanes
- Measurement of Toxic Organic Compounds in Biogas and Biomethane by GCMS
- Online, Direct Measurement of Volatile Siloxanes in Anaerobic Digester and Landfill Gases
- Toxic Organics in Biomethane Analyzer
Hydrocarbons
- Determination of Hydrocarbons in Diesel Exhaust
- Identification of Hydrocarbons in Ambient Air
- List of Kovats Indices Alumina PLOT
- List of Kovats Indices for C2-C13 Hydrocarbons
- Peak Assignments for C2-C9 Hydrocarbons in Vehicle Exhaust with Varian Alumina-KCl PLOT Capillary Column
- Peak Assignments for C2-C13 Hydrocarbons in Ambient Air
- Peak Assignments for C2-C13 Hydrocarbons in Vehicle Exhaust
- Quantitation of Hydrocarbons in Vehicle Exhaust and Ambient Air
- Using Kovats Indices
- Validating Instrument Performance for Measurement of Hydrocarbons in Ambient Air
Non-Methane Organic Compounds (NMOC)
- Novel Approach to Measuring Non-Methane Organic Compounds (NMOC) with Cryo-Trapping
- Performance of a Non-Methane Organic Compound Analyzer – EPA Method 25 and South Coast AQMD Method 25.3
Greenhouse Gases
- A Precise Gas Chromatographic Method Using ECD Detection for the Measurement of Nitrous Oxide in Vehicle Exhaust
- Measurement of Carbon Dioxide, Methane, Nitrous Oxide, Sulfur Hexafluoride and Halocarbons in Ambient Air at an Industrial Park in Huntington Beach, California
- Method for the Determination of Nitrous Oxide in Ambient Air and Vehicle Exhaust
- Optimum Parameters for Detection of Long-Lived Green House Gases in Ambient Air
TO15 Toxic Analytes
- A Case Against Using Internal Standards for EPA Method TO-15
- Evaluating Performance of Measurement Systems Configured for TO-15 Toxic Organics in Ambient Air and Other Bulk Gases
- Extremely Wide Concentration Ranges for Toxic Analytes in Air with Lotus Consulting TO15 Analyzer and Scion SQ Mass Spectrometer
- Peak Assignment for TO15 Analytes with Varian CP624 Column
General Chromatography
- Concentration Units in Gas Analysis
- Effectiveness of EFC in Gas Chromatography
- Effects of Temperature and Pressure on Sample Loop Volume in Gas Analysis
- Mass Flow Controllers and Carbon Dioxide
- Preprogrammed Monitoring of System Performance
- Primer on Temperature Control and Monitoring in Gas Chromatography
- Ultimate Performance in Gas Chromatography
- Unintended Consequences with Conversion to Hydrogen Carrier
General MS Discussions
Sample Processing
Data Handling
- Calibration Processes for Bruker Workstation
- Data Integrity with Star Workstation
- A Case Against Using Internal Standards for EPA Method TO-15
- Peak Detection with Varian MS Workstation
- Peak Detection with Varian Star Workstation
- Preparing GC Chromatograms from Bruker Workstation for Publication
- Processing Very Big Signals
- Unlocking Retention Times
Special Applications
- Measurement of Acrylonitrile, Acetonitrile, and Nitromethane in Ambient Air and Vehicle Exhaust
- Naphthalene in Ambient Air by GC/MS-MS Detection
- PCB Pattern Matching Program
- Peak Assignment for CHHSL Vapor Intrusion Analytes with Restek RTX-1 Column
- Peak Assignments for Illinois Tiered Approach to Corrective Action Objectives for Vapor Intrusion Measurements with Capillary Column