Total sulfur analysis by combustion is often insufficient, requiring speciation of individual sulfur molecules. The ASTM D5623 (for light liquids and hydrocarbons) and ASTM D5504 (for natural gas and LNG) standards use GC-SCD technology to provide highly sensitive and selective quantification. These methods are crucial for preventing catalyst poisoning, protecting infrastructure, and ensuring regulatory compliance and competitiveness in modern energy markets.
The PAC analyzer for sulfur speciation integrates the Agilent 8890 GC platform with the AC SeNSe2 chemiluminescence detector (SCD).
The system is available in multiple configurations, including combined configurations, in compliance with major international standards:
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ASTM D5623: analysis of trace sulfur compounds in light petroleum liquids. Standard configuration with split injector, upgradeable with LSV (Liquid Sampling Valve) and/or GSV (Gas Sampling Valve)
- ASTM D5504: analysis of natural gas and gaseous fuels. Configuration with split injector and dedicated GSV valve
- Multiparameter Solution: combined ASTM D5623 and D5504 configuration for maximum operational flexibility.