The distribution of Chlorpyrifos following a crack and crevice type application in the U.S. EPA indoor air quality research house
Stout, D. and Mason, M. A.
2002 Proc. Indoor Air 2002
Stout, D. and Mason, M. A., (2002), "The distribution of Chlorpyrifos following a crack and crevice type application in the U.S. EPA indoor air quality research house", Proc. Indoor Air 2002.
Abstract:
A study was conducted in the U.S. EPA Indoor Air Quality Research House to determine the spatial and temporal distribution of chlorpyrifos following a professional crack and crevice application in the kitchen. Following the application, measurements were made in the kitchen, den and master bedroom over 21-days. Airborne concentrations were collected using both polyurethane foam (PUF) and a XAD/PUF (OVS) media. Measured airborne concentrations were similar for the two samplers, were higher in the three rooms following the application, reached maximal levels 24-h post-application, and declined steadily over the 21-day study period. Spatial and temporal distributions were measured using 10-cm2 cotton deposition coupons. Sections were cut from existing carpet to determine the total extractable residues. Chlorpyrifos was measured from all matrixes in the kitchen, den and bedroom and shows the transport of airborne residues from the point of application to remote locations in the house.