title: Determination of pesticides in indoor air and dust.
abstract: Improved analytical and sampling methods were developed for the multiresidue determination of pesticides in indoor air. Air analysis consists of adsorption of the pesticides in 1 m(3) of air onto Tenax TA via an air sampling pump, desorption with acetone and determination and quantitation by gas chromatography/mass spectrometry (GC/MS) with chemical ionization on an ion trap mass spectrometer. Limits of detection for the 23 pesticides studied ranged from 0.5 ng/m(3) for chlorpyrifos and diazinon to 30 ng/m(3) for o-phenylphenol (approximately 0.5-30 parts per trillion on a w/w basis). A simple method for the detection of pesticides in dust was also developed. This method involves emptying the contents of a vacuum cleaner bag into a standard household food processor and extracting 1 g homogenized dust with acetone before GC/MS. Limits of detection were 25-100 ppb because of interferences by common household chemicals. However, pesticide concentrations were higher in dust than in air, therefore, analysis of dust is a better indicator of indoor pesticide exposure.
authors.affiliation: Rutgers University, Cook College, Department of Food Science, New Brunswick, NJ 08903.
authors.forename: K S
authors.initials: KS
authors.lastname: Roinestad
authors.forename: J B
authors.initials: JB
authors.lastname: Louis
authors.forename: J D
authors.initials: JD
authors.lastname: Rosen
mesh_terms: D000327:Adsorption; D016902:Air Pollution, Indoor / Q000032:analysis*; D002138:Calibration; D004391:Dust / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D006798:Housing; D009515:New Jersey; D010573:Pesticide Residues / Q000032:analysis* / Q000302:isolation & purification; D012680:Sensitivity and Specificity; D013048:Specimen Handling
chemical_list: D004391:Dust; D010573:Pesticide Residues