id author title date pages extension mime words sentences flesch summary cache txt cord-339475-okw6la2b nan Chapter 11 Health effects 2005-12-31 .txt text/plain 3084 193 46 As an indication of their effectiveness, about one half of all 3-~tm particles inhaled through the mouth deposit in the alveolar region. As an indication of their effectiveness, about one half of all 3-~tm particles inhaled through the mouth deposit in the alveolar region. The diseases resulting from exposure to ambient aerosols include pulmonary emphysema, bronchitis, and, perhaps, lung cancer. However, none of the harmful components mentioned above exists in ambient particles at sufficiently high concentration levels to cause a specific disease. Complexity in chemical characteristics of ambient particles has led to considerable difficulty in identifying the components responsible for adverse health effects. Aerosol particles can serve as an effective carrier for ambient peroxides and reactive oxygen species to reach the alveolar region. When these reactive species are adsorbed on particle surfaces, they can easily reach the alveolar region and thereby lead to an adverse effect greater than in tracheobronchial airways. Pulmonary effects of inhaled ultrafine particles ./cache/cord-339475-okw6la2b.txt ./txt/cord-339475-okw6la2b.txt