Potential exposure of children and adults to cypermethrin following use of indoor insecticide foggers.
The magnitude and distribution of cypermethrin from total release, over-the-counter foggers was studied in a test room and in residences to facilitate evaluation of regulatory exposure algorithms and new human exposure assessments based upon urine biomonitoring. Surface residue (SR) was evenly distributed in a small test room (3.6 mciro g cypermethrin/cm(2)) where thorough mixing of the aerosol occurred. In a residence SR was significantly affected by room size and distance from the fogger. Air levels in the residence were as high as 30 mciro g cypermethrin/cm(3) after 4.5 h. The availability of surface residues was measured with an automated surface cotton cloth wipe and ethyl acetate extraction. Only 5% of the SR was available from nylon carpet. Tile, wood and linoleum resulted in 30, 10, and 10% of SR being available, respectively. These data are used to estimate cypermethrin exposure of children and adults for comparison with existing regulatory reference dosages and exposure assessments based upon biomonitoring.
Keenan
James J
JJ
Department of Entomology, Personal Chemical Exposure Program, University of California Riverside, Riverside, California 92521, USA.
Vega
Helen
H
Krieger
Robert I
RI
D000328:Adult; D016902:Air Pollution, Indoor / Q000009:adverse effects / Q000032:analysis*; D002648:Child; D004781:Environmental Exposure / Q000009:adverse effects / Q000032:analysis*; D006798:Housing; D006801:Humans; D019570:Inhalation Exposure / Q000009:adverse effects / Q000032:analysis*; D007300:Insect Control / Q000295:instrumentation*; D007306:Insecticides / Q000009:adverse effects / Q000032:analysis*; D008954:Models, Biological; D011722:Pyrethrins / Q000009:adverse effects / Q000032:analysis*; D018570:Risk Assessment
D007306:Insecticides; D011722:Pyrethrins; C017160:cypermethrin