Automated cryogen-free monitoring of ‘air toxics’ in ambient air using TD–GC–MS in accordance with US EPA Method TO‑17

contributed by Markes International Ltd | 11/11/2024

This study demonstrates the performance of Markes’ thermal desorption instruments for the tube-based analysis of 65 ‘air toxic’ compounds in accordance with US EPA Method TO‑17. Analytical precision, linearity and method detection limits are shown to be within the requirements of the method, and we additionally illustrate the capability of Markes’ instruments to split, re-collect and re-analyse samples without analytical bias.

Volatile organic ‘air toxics’ or ‘hazardous air pollutants’ (HAPs) are monitored in many industrial and urban environments as a measure of air quality. They range in volatility from propene to hexachlorobutadiene and naphthalene, and include polar as well as non-polar compounds. Several national and international standard methods have been developed for air toxics and related applications, including US EPA Method TO‑17.1

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