Passive Sampling Device as a Simple Tool for Assessing Ecological Change: An Extended Monitoring Study in Ambient Air.

摘要

Passive Sampling devices (PSDS) normally associated with personal monitoring were studied as less costly alternate or supplemental methods for the Environmental Monitoring and Assessment Program (EMAP). Annular denuder samplers (ADSs) were also evaluated during the study. The PSDs and ADSs were compared to the methods used at one of the remote sites in the National Dry Deposition Network (NDDN). At the 1991 EPA/A&WMA Symposium six months of comparison data was presented. These data showed that the PSDs and the ADSs could provide data that was within + or - 20 percent of the NDDN methods. For example, the Ozone-PSD was within + or - 10 percent of a real time uv ozone monitor. This inter-comparison of methods was extended for an entire year to determine the effect of seasonal temperature and humidity changes. The report specifically provides data from November 1990 to October 1991 at the NDDN site in Prince Edward, VA.