Abstract
Measureable levels of chlorpyrifos were seen in air and on horizontal and vertical surfaces over an 84-day sampling period following application by two different methods. Pressurized aerosol applications had the highest airborne levels over the 84-day sampling period, and movement into adjacent, nontreated rooms was seen 7 days after application. Highest surface residues found were located at floor/wall interfaces and were due probably as a result of splash or overspray around treated areas. Residue levels from desk sides were very low and all surface residues were highly variable. One could not predict what surface levels would be based upon airborne concentrations.
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Leidy, R.B., Wright, C.G. & Dupree, H.E. Distribution of chlorpyrifos in air and on surfaces following crack and crevice application to rooms. Environ Monit Assess 42, 253–263 (1996). https://doi.org/10.1007/BF00414372
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DOI: https://doi.org/10.1007/BF00414372