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Int. J. Environ. Res. Public Health 2011, 8(6), 2142-2152;

Bystander Exposure to Ultra-Low-Volume Insecticide Applications Used for Adult Mosquito Management

Department of Land Resources and Environmental Sciences, Montana State University, 334 Leon Johnson Hall, Bozeman, Montana 59717, USA
Author to whom correspondence should be addressed.
Received: 26 April 2011 / Revised: 4 June 2011 / Accepted: 9 June 2011 / Published: 14 June 2011
(This article belongs to the Special Issue Environmental Health Risk Assessment)
Full-Text   |   PDF [296 KB, uploaded 19 June 2014]


A popular and effective management option for adult mosquitoes is the use of insecticides applied by ultra-low-volume (ULV) equipment. However, there is a paucity of data on human dermal exposure to insecticides applied by this method. The objective of the current study was to estimate dermal exposures to the insecticide active ingredient permethrin using water- (Aqua-Reslin®) and oil-based (Permanone® 30-30) formulations with passive dosimetry. No significant differences in deposition of permethrin were observed between years, distance from the spray source, front or back of the body, or the placement of the patches on the body. However, exposure to Aqua-Reslin was significantly greater than Permanone 30-30 and average concentrations deposited on the body were 4.2 and 2.1 ng/cm2, respectively. The greater deposition of Aqua-Reslin is most likely due to the higher density of the water-based formulation which causes it to settle out faster than the lighter oil-based formulation of Permanone 30-30. The estimated average absorbed dermal exposure for permethrin from Aqua-Reslin and Permanone 30-30 was 0.00009 and 0.00005 mg/kg body weight, respectively. We also found that ground deposition of ULV insecticides can be used as a surrogate for estimating dermal exposure. The estimated exposures support the findings of previous risk assessments that exposure to ULV applications used for mosquito management are below regulatory levels of concern. View Full-Text
Keywords: dermal exposure; pyrethroid; risk analysis; exposure assessment; passive dosimetry dermal exposure; pyrethroid; risk analysis; exposure assessment; passive dosimetry
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Preftakes, C.J.; Schleier III, J.J.; Peterson, R.K. Bystander Exposure to Ultra-Low-Volume Insecticide Applications Used for Adult Mosquito Management. Int. J. Environ. Res. Public Health 2011, 8, 2142-2152.

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