At the lab, the samples are desorbed by transferring the sieves into a vial, adding water, and capping the vial. The water will displace the nitrous oxide, which gathers in the headspace of the vial. Finally, the headspace is analyzed by GC/ECD for the nitrous oxide.
Each sampling event should include field blanks. Subtract out the field blank result from the badges used for exposures.
This badge collects the following:
Important Handling Instructions:
- Remove the badges from pouches immediately before sampling. Even though the badge is shut, it could still be collecting nitrous oxide.
- Before and after use, store the badges in a room that has no nitrous oxide
- After sampling, put each badge into a return container and in the return envelope provided. Then seal the envelope. Please use the return containers and envelopes provided, and do not put more than one badge in each envelope.