Pyrethroid levels in toddlers’ breathing zone following a simulated indoor pesticide spray

ABSTRACT Application of pyrethroid insecticides in residential settings may result in children’s exposures to these chemicals and possible adverse health effects. Household dust is a

recognized reservoir for pyrethroids and a potential medium for multi-route pyrethroid exposure. Young children move and play in a manner that resuspends dust, and since their breathing zone

is close to the floor, they will have higher inhalation exposure to pesticide-laden dust than other age groups. Directly measuring a toddler’s exposure to household dust presents many

logistic challenges. We simulated the dust resuspension induced by a toddler using a robot, which also served as a platform to collect air samples at the toddler’s breathing zone height. We

performed simulated pyrethroid residential spray and dust resuspension experiments on vinyl and carpeted floors. The mean pyrethroid airborne concentrations in the stationary and mobile

samples were 0.065 μg/m3 and 0.143 μg/m3 for the vinyl floor with 1 g/m2 dust loading, and 0.034 μg/m3 and 0.061 μg/m3 for the carpeted floor with 10 g/m2 dust loading, respectively.

Pyrethroids concentrations in the settled dust samples were significantly lower than that measured in the stationary and mobile samples in the carpeted floor experiments. Thus, the use of

stationary samples and settled dust samples may underestimate a toddler’s personal inhalation exposure to pyrethroids in residential houses. Access through your institution Buy or subscribe

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PESTICIDE, ALLERGEN, PCB, AND LEAD MEASUREMENTS IN CHILDCARE CENTERS LOCATED ON TRIBAL LANDS IN THE PACIFIC NORTHWEST, UNITED STATES Article Open access 11 September 2023 PERSONAL AIR

SAMPLING FOR PESTICIDES IN THE CALIFORNIA SAN JOAQUIN VALLEY Article Open access 10 September 2024 MASS AND PARTICLE SIZE DISTRIBUTION OF HOUSEHOLD DUST ON CHILDREN’S HANDS Article Open

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references ACKNOWLEDGEMENTS Support for this research was provided by Graduate School of Biomedical Sciences and Environmental and Occupational Health Sciences Institute (EOHSI) at Rutgers

University. Clifford P Weisel and Gediminas Mainelis were supported in part by the NIEHS Center for Exposure and Environmental Disease (CEED) (E5005022). AUTHOR INFORMATION AUTHORS AND

AFFILIATIONS * Division of Exposure Science, Department of Environmental Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA Jiaqi Zhou, Gediminas Mainelis & 

Clifford P. Weisel * Environmental and Occupational Health Sciences Institute, Rutgers, The State University of New Jersey, Piscataway, NJ, USA Gediminas Mainelis & Clifford P. Weisel

Authors * Jiaqi Zhou View author publications You can also search for this author inPubMed Google Scholar * Gediminas Mainelis View author publications You can also search for this author

inPubMed Google Scholar * Clifford P. Weisel View author publications You can also search for this author inPubMed Google Scholar CORRESPONDING AUTHOR Correspondence to Clifford P. Weisel.

ETHICS DECLARATIONS CONFLICT OF INTEREST The authors declare that they have no conflict of interest. ELECTRONIC SUPPLEMENTARY MATERIAL SUPPLEMENTARY INFORMATION RIGHTS AND PERMISSIONS

Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Zhou, J., Mainelis, G. & Weisel, C.P. Pyrethroid levels in toddlers’ breathing zone following a simulated indoor pesticide

spray. _J Expo Sci Environ Epidemiol_ 29, 389–396 (2019). https://doi.org/10.1038/s41370-018-0065-6 Download citation * Received: 14 February 2018 * Revised: 25 June 2018 * Accepted: 18 July

2018 * Published: 05 September 2018 * Issue Date: May 2019 * DOI: https://doi.org/10.1038/s41370-018-0065-6 SHARE THIS ARTICLE Anyone you share the following link with will be able to read

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KEYWORDS: * Pyrethroids * Toddlers * Resuspended dust * Inhalation exposure