Estimating Dermal Exposure to Insecticides from Mosquito Management
Author Information
Author(s): Collin J. Schleier, Jerome J. III Peterson, Robert K. D. Peterson
Primary Institution: Montana State University
Hypothesis
What are the dermal exposures to the insecticide permethrin from ultra-low-volume applications?
Conclusion
The study found that dermal exposures to permethrin from ground-based ultra-low-volume applications are lower than modeled concentrations and below regulatory levels of concern.
Supporting Evidence
- Average concentrations of permethrin deposited on the body were 4.2 ng/cm2 for Aqua-Reslin and 2.1 ng/cm2 for Permanone 30-30.
- The estimated average absorbed dermal exposure for Aqua-Reslin was 0.00009 mg/kg body weight.
- Ground deposition data can be used to estimate potential dermal exposures from ULV applications.
- Previous studies have shown that ULV exposures most likely do not exceed regulatory thresholds.
Takeaway
This study looked at how much insecticide people might get on their skin when it's sprayed to kill mosquitoes, and it found that the amounts are very low and safe.
Methodology
The study used passive dosimetry to measure dermal exposure to two formulations of permethrin applied in ultra-low-volume sprays.
Potential Biases
Potential bias from using models not specifically designed for ULV applications.
Limitations
The study's estimates may be overestimations due to conservative assumptions about dermal absorption rates.
Participant Demographics
The study involved mannequins as surrogates for human bystanders.
Statistical Information
P-Value
0.013
Confidence Interval
0.00005–0.00013
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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