GC-ICP-MS technology helps solve the problem of low detection limits for siloxanes in biogas usage. It has low detection limits and high sensitivity. The technology allows for accurate quantification of any volatile Si containing compound based on the response of a single standard compound.
This document addresses the problem of volatile siloxanes in biogas, which cause equipment wear and failure when burned. It highlights that traditional GC/MS methods lack the sensitivity required for modern microturbine engines.
The text evaluates the Agilent GC-ICP-MS system, specifically the 6890/7500ce combination, for analyzing these compounds. Results show detection limits of less than 1 pg per compound and 0.03-0.07 ppbv in biogas, offering superior sensitivity and ease of use compared to previous methodologies.
| Detection limit (in methanol) | < 1 pg per compound |
|---|---|
| Detection limit (in biogas) | 0.03 - 0.07 ppbv |
| Total run time | less than 10 minutes |
The resulting detection limits ranged from 0.03 to 0.07 ppbv.
The GC-ICP-MS method is more than 500 times more sensitive than the lowest reported GC/MS detection limit.
The total run time was less than 10 minutes.