Procedures in Infrared Analysis of Gases By Dr. Philip L. Hanst
TABLE OF CONTENTS - Click Any Topic
Air Pollutant concentrations and distribution
Applications of QASoft (partial list)
Applications-Examples: Measuring Aromatics(BTEX) in Gasoline
Applications-Examples: Breath and Breathing
Applications-Examples: Explanation of the QASoft Workbook Page
Applications-Examples: Measurement of Trace Gases in Air
Atmospheric measurements - discussion
Atmospheric measurements - examples
Browse, the search function of QASoft
Calibration comes from the quantitative reference spectra
Carbon dioxide interference removal
Computer operations in the sequence analysis of 13 trace gases in air
Concentration range for quantitative analysis
Database of gas phase infrared spectra
Electromagnetic spectrum, regions
Gases and condensed phases have differing techniques of measurement
Gas measurement requires a long optical path
Glass and anodized aluminum, advantages
Hardware requirements for QASoft
Hydrocarbons, C6 and up, non-aromatic
Impurities in infrared active gases
Integration region and zero level selection
Line shape changes with pressure reduction
Line widths and resolution requirements
MCT Detector (Mercury-cadmium-telluride)
Minimum detection limits (MDL)
Nitrogen gas from liquid nitrogen
Photolysis assisted pollution analysis (PAPA)
Purging the sample compartment is not recommended
QASoft (quantitative analysis software
QASoft uses GRAMS AI to import spectra
Quantitative accuracy of the spectra
Region integration and subtraction (RIAS)
Room temperature work, benefits of and technique for
Rules for quantitative analysis of gases
Signal decrease due to the presence of the long path cell
Water and CO2 interference removal