This Application Note demonstrates the sensitivity of the CDS 7550S coupled to a GC/MS for the analysis of TO-17 volatile organic compounds (VOCs) ranging in volatility from propene to naphthalene. The data shows that CDS 7550S meets and exceeds the criteria set forth in US EPA Method TO-17. Detailed instrument method parameters are presented along with clean blank chromatogram, precision, linearity, and calibration curves for several groups of compounds.
Thermal Desorption adsorbent tubes are used to capture the VOCs listed in US EPA Method TO-17. To quantitatively analyze the captured compounds, the CDS 7550S has been designed with 350°C ultra high temperature inert valve oven, integrated zero-degassing tube heater, pressure controlled Internal Standard Module, proprietary Pre-heat and Pre-desorb focusing, as well as a Peltier module to capture gas phase VOCs with boiling points far below ambient temperature. To accommodate the demand of high throughput jobs, the system adopts a high precision 72-position robotic system with software-calibration capability on the tube length. This Application Note will demonstrate the performance of this system and the analysis of volatile organic compounds ranging in polarity and volatility.
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