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A New Approach to Whole Air Sampling using Deactivated Glass Bottles
Current EPA Methods TO-14 and TO-15 call for the use of metal canisters to collect whole air samples for transport and subsequent analysis at the laboratory. Tedlar bags are a lower cost alternative for collecting volatiles in air, but are more limited due to shorter holding times and poor stability of heavier VOCs. It is this lower recovery and much shorter holding time that prevents the use of Tedlar bags for the ambient whole air methods TO-14A and TO-15. A more cost-effective approach to air sampling and analysis that yields similar performance to stainless steel canisters has now been obtained from deactivated glass containers called Bottle-Vac samplers. Data is presented that demonstrates the inertness and ease of use of this new type of air sampler.
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