Presents the results of a study of forty-six high school students in New York City and and forty-one in Los Angles in 1999 and 2000. The students wore backpacks equipped with air monitors that measured what each was exposed to throughout the day. Although outdoor air in both cities is heavily polluted, home and school indoor air was responsible for 40% to 50% of the teenagers' cancer risk from the compounds measured. The median cumulative risk from personal VOC exposures for this sample of New York City high school students was 664 per million and was greater than the risks from outdoor exposures by a factor of about 5. In the Los Angeles sample, median cancer risks from VOC personal exposures were 487 per million, about a factor of 7 greater than outdoor exposure risks. Sources and types of pollutants collected and their carcinogenic risk are also described. Includes 37 references.
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