Concentrations of Diazinon, Chlorpyrifos, and Bendiocarb after Application in Offices

Currie, Karen L.; McDonald, Elizabeth C.; Chung, Lambert T.K.; Higgs, Arlene R.

doi:10.1202/0002-8894(1990)051<0023:codcab>2.0.co;2

Cited by 2 publications

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“…The aerosol cannister label called for release of the contents in a room no smaller than 1500 ft 3 . The rooms in this study were 1516 ft 3 in volume.…”

Section: Discussionmentioning

confidence: 99%

“…The U.S. Environmental Protection Agency has conducted a systematic investigation of pesticides in indoor air (1) and has developed methods for measuring environmental concentrations in homes (2). Several investigators have focused on exposures immediately following residential pesticide applications in an effort to develop exposure assessment guidelines for product registration and to estimate acute toxicity risks for children (2)(3)(4)(5)(6)(7)(8)(9).…”

Section: Introductionmentioning

confidence: 99%

“…This study was designed to evaluate potential exposure to air and surface residues of chlorpyrifos [O,O-diethyl O- (3,5,6-trichloro-2-pyridyl) phosphorothioate], following broadcast and total aerosol release applications over a 7-day period and to determine the effect of ventilation on residue dissipation.…”

Section: Introductionmentioning

confidence: 99%

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Air and Surface Chlorpyrifos Residues following Residential Broadcast and Aerosol Pesticide Applications

Fenske

1998

Environ. Sci. Technol.

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Ambient air at three different heights and surface chlorpyrifos residues were measured for 7 days following broadcast (Dursban) and total release aerosol (K-RID) chlorpyrifos applications for flea control in four dormitory rooms. All rooms were ventilated with forced air for 30 min immediately following applications. One room of each type was then maintained with no ventilation, while the other rooms were ventilated by forced air for an additional 4 h and by ambient air on subsequent study days. Peak air concentrations of 118 μg/m3 (broadcast) and 82 μg/m3 (aerosol) were measured at 4−12 h postapplication. Concentrations decreased rapidly over the first 4 days post-application and remained low (1 μg/m3) and relatively constant on days 5−7. Forced air ventilation reduced air concentrations only transiently in the broadcast room, and subsequent ambient air ventilation had little effect. In the aerosol room, however, ventilation decreased air concentrations substantially. Broadcast applications resulted in 7.5 times more total deposited chlorpyrifos on carpets than aerosol applications; however, dislodgeable residues on carpets were only 2-fold greater. Chlorpyrifos residues deposited on nontarget surfaces (e.g., furniture) by aerosol applications were 140−500 times greater than by broadcast applications. The estimated total absorbed chlorpyrifos doses for broadcast and aerosol applications (12−33 μg/kg) were near the no observable effect level (NOEL, 30 μg/kg) on day 1 but not on the remaining days. Future studies should measure airborne particulates and assess residue dislodgeability from nontarget surfaces, as these pathways are likely contributors to human exposure. Accurate estimates of exposure in these environments will also require detailed analysis of human activities.

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“…The aerosol cannister label called for release of the contents in a room no smaller than 1500 ft 3 . The rooms in this study were 1516 ft 3 in volume.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Air and Surface Chlorpyrifos Residues following Residential Broadcast and Aerosol Pesticide Applications

Fenske

1998

Environ. Sci. Technol.

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Human Exposure to Airborne Pesticides in Homes Treated with Wood Preservatives

1997

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In rooms where pesticides were applied, air was analysed for its biocide content. Inhabitants of investigated homes attributed their health complaints to pesticide exposure in their homes. Airborne pesticides originating from wood preservatives were sampled on polyurethane foams or Tenax TA and analysed after solvent desorption by HRGC with different types of detector. In investigated homes, concentrations of diazinon, phenthoate, phoxim, propoxur, dichlofluanid, endosulfan, permethrin and tributyltinoxide were found between ≤0.002 and 0.347 μg/m3. In one home, four years after pest control, chlorpyrifos amounted to 0.515 μg/m3. Permethrin emission from a wool carpet ranged between 0.013 and 0.060 μg/m3. Vacuum cleaning for ten minutes increased airborne permethrin up to 0.096 μg/m3. In house dust, diazinon, phenthoate and permethrin were determined in concentrations of 0.60 ≤g/g, 181.00 pg/g and 0.14 μg/g dust, respectively. Estimated inhaled pesticides ranged between ≤0.04 and 10.3 μg/day. Dust ingestion contributed to 0.03–36.2 μg/day. Pesticide intake through inhalation and dust ingestion was estimated to range between 4% and 120% of the ADI‐value. Based on today's knowledge, toxic effects are not anticipated.

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Concentrations of Diazinon, Chlorpyrifos, and Bendiocarb after Application in Offices

Cited by 2 publications

References 0 publications

Air and Surface Chlorpyrifos Residues following Residential Broadcast and Aerosol Pesticide Applications

Air and Surface Chlorpyrifos Residues following Residential Broadcast and Aerosol Pesticide Applications

Human Exposure to Airborne Pesticides in Homes Treated with Wood Preservatives

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