The Total XXXX Environmental Exposure Study (THEES) to @entity3014 : comparison of the inhalation and food pathways.

@entity1 @entity3015 @entity3014 @entity4808
The assessment of @entity1 exposure to an environmental contaminant requires the measurement of levels present in each pathway of possible contact. In this paper, the design considerations and Phase I results of a @entity1 exposure study focused on @entity3014 ( @entity3015 ) are discussed. This study site, located in Phillipsburg, New Jersey, is a city that contains a metal pipe foundry, which is a suspected major source of @entity3015 . Three outdoor PM-10 samplers (used to collect @entity3015 -containing particles with an aerodynamic size of less than or equal to 10 micron) were located in residential areas surrounding the foundry. Ten homes were sampled indoors for PM-10. Some homes have indoor combustion sources, e.g., cigarette smoke or a @entity4808 . The indoor and outdoor samples were 24 hr in duration. The mean outdoor concentration of @entity3015 was 0.9 ng/m3, and the indoor concentrations ranged from 0.1-8.1 ng/m3. Food samples were acquired from family meals each day. They represented a one-third portion of each meal eaten at home. The range of @entity3015 per gram of wet weight of food was between 0.004 and 1.2 ng/g. Of the 20 wk of exposure (10 x 2 wk), 10 had higher food exposures and the other 10 had higher inhalation exposures. Of the two groups, the higher food exposures usually had a greater number of ng of @entity3015 /wk. The dominance of one or the other pathway appeared to depend upon personal eating habits and indoor combustion source use. In some instances, outdoor air pollution led to a major portion of indoor air @entity3015 exposures. Water appears to be a minor source of @entity3015 exposures in the study area.
