H2S measurement, ppm range or percent – Fast, Easy and Accurate
H2S can be effectively monitored using an ion mobility spectrometer in negative mode. This technique generates HS- ions with specific drift times, ensuring no overlap with other compounds. Consequently, IMS proves to be an ideal measurement method for detecting H2S in natural gas and other oil products. Additionally, it can detect and differentiate SO2 along with other sulphur compounds.
The Detect Ion Tech Gas Auto-sampler (GAS-110) automates the sampling of gaseous samples from cylinders, ambient air, production line or reservoirs for analysis on the Ion Mobility Spectrometer (IMS). This stand-alone device mixes a fixed volume of the sample with a carrier gas that enters the detector, ensuring precision. The mixing ratio is customizable based on the application, sample concentration, and detector sensitivity.
Precision and Accuracy
Standard gas samples of H2S at 2, 5, and 10 ppm were introduced to the auto-sampler. Each sample was injected five times, and ion mobility spectra were recorded. The reactant ion peak remained consistent across all spectra, while the analyte peak varied.
The analyte peaks at each concentration exhibited similar intensities with a Relative Standard Deviation (RSD) of less than 3%.
Repeatability
Applications
- Gas and Oil Refinery
- Petrochemical Industry
- Air quality monitoring
- Chemical Production Lines
- Analytical Laboratories
- Online monitoring of gas composition