Seasonal differences in the particle size fractions and mass loadings of household dust deposited on indoor surfaces were examined in four New Jersey homes.
Housedust was collected during a 30-day period on non-electrostatic polyethylene sample plates on which a glass slide had been placed.
In each home two samples were collected at a height of 1.5 m and two were collected at a height of 0.3 m above the floor.
Dust samples were obtained from each home during a summer and winter collection period.
Particle size measurement was completed using an adaptation of a Meridian ACAS 570 Interactive Laser Cytometer.
Results indicated that the dust mass deposited on household surfaces during the summer was greater than during the winter.
The arithmetic mean mass deposition rate for all houses was 0.37 ± 0.13 mug/cm2/day during the summer and 0.22 ± 0.13 mug/cm2/day during the winter.
The total number of particles deposited, however, was greater during the winter than during the summer.
The increase in winter time particle number was caused by greater numbers of particles with an equivalent spherical diameter<2.5 mum.
The most probable source of these particles was winter time combustion emissions within the residences and the subsequent particle deposition on household surfaces.
The greater mass loadings measured on the low sampling plates during the summer were associated with a greater number of particles with an equivalent spherical diameter>5 mum. (...)
Mots-clés Pascal : New Jersey, Etats Unis, Amérique du Nord, Amérique, Pollution intérieur, Logement habitation, Poussière maison, Teneur, Dimension particule, Vitesse dépôt, Variation saisonnière, Inventaire source pollution
Mots-clés Pascal anglais : New Jersey, United States, North America, America, Indoor pollution, Housing, House dust, Content, Particle size, Deposition rate, Seasonal variation, Pollution source inventory
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0088883
Code Inist : 001D16C06. Création : 31/05/1999.