Ultra-Trace Analysis of H₂S, COS, Arsine & Phosphine
Highly sensitive GC-MS solution for combined detection of H₂S, COS, arsine, and phosphine in ethylene and propylene – achieving sub-ppb detection in a single run.
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High-Precision Trace Analysis in Ethylene and Propylene
Trace contaminants such as hydrogen sulphide (H₂S), carbonyl sulphide (COS), arsine and phosphine are extremely harmful to downstream catalysts in olefin processing. Even at ppb concentration levels, these compounds can cause irreversible catalyst poisoning in polymer production facilities.
The GAS ultra-trace analyser for trace sulphur, arsine and phosphine provides a fully integrated and highly sensitive solution for the combined analysis of these components in ethylene and propylene. Using gas chromatography coupled with mass spectrometry and an Advanced Electron Ionisation (AEI) source, the system delivers reliable sub-ppb detection in a single method and single run, with excellent repeatability and linearity.
Applications
- Olefin Feedstock Quality Control
Detect ultra-trace sulphur, arsine and phosphine contaminants in ethylene and propylene to protect polymerisation catalysts.
- Catalyst Protection and Lifetime Extension
Identify ppb-level impurities that can cause catalyst deactivation in downstream processing units.
- Polymer Production Monitoring
Verify feed gas purity to ensure stable and efficient polymerisation processes.
- Refinery and Petrochemical Laboratories
Perform highly sensitive trace analysis using a validated GC-MS methodology.
- Method Development and Research
Support advanced R&D studies with single-run, multi-component trace detection.
Benefits
- Sub-ppb Detection Limits
Achieve detection limits below 1 ppb for H₂S, COS, arsine, and phosphine using GC-MS with AEI source.
- Single Method, Single Run
Analyse all target components in one chromatographic run, reducing complexity and analysis time.
- Automated Calibration
Automatic Calibration Unit (ACU) with permeation tubes enables accurate, multi-level calibration without manual gas preparation.
- Excellent Linearity and Repeatability
Proven linearity (R² up to 0.999) and repeatability below 5% RSD across the 2–50 ppb range.
- Inert Sample Path Design
Sulfinert® tubing and optimised flow path prevent adsorption of highly active sulphur and hydride compounds.
Downloads
Access brochures, technical datasheets, application notes, and software updates for Biogas Analysers
H₂S, COS, Arsine & Phosphine Analyser Datasheet
Explore detailed system configuration, chromatograms, calibration strategies, and performance data for ultra-trace analysis of sulphur and hydride compounds in ethylene and propylene using GC-MS with AEI.