Passive/Diffusive Samplers for Pesticides in Residential Indoor Air.

摘要

Pesticides applied indoors vaporize from treated surfaces (e.g., carpets and baseboards) resulting in elevated air concentrations that may persist for long periods after applications. Estimating long-term respiratory exposures to pesticide vapors in residential indoor environments using active (pump-based) sampling systems has been costly and burdensome on occupants. Diffusion-controlled passive sampling devices (PSDs), which do not require a noisy pump and can be situated unobtrusively within the home, would offer distinct advantages. The U.S. EPA is investigating the applicability of diffusive PSDs, semipermeable membrane devices (SPMDs), solid-phase microextraction (SPME), and other gas-sorbent partitioning samplers for estimating sermivolatile organic compound (SVOC) pesticides in homes. This paper presents the results of the initial evaluations of two diffusion-controlled PSDs for determination of three pesticides in room air.