Indoor air chemistry: Terpene reaction products and airway effects.

摘要: Abstract Reactive chemistry is ubiquitous indoors with a wealth of complex oxidation reactions; some these are initiated by both homogeneous and heterogeneous reaction ozone unsaturated organic compounds subsequent the hydroxyl radical, either in gas-phase or on reactive surfaces. One major focus has been common abundant terpene-based fragrances indoor air emitted from many wood-based materials, variety consumer products, citrus fruits flowers. Inhalation terpenes themselves generally not considered health concern (both acute long-term) due to their low concentrations; however, gas- surface reactions radical produce host gaseous, i. a. formaldehyde, ultrafine particles formed condensation/nucleation processes. These products may be concern. Human cell bioassays key ozone-initiated terpene have shown inflammatory reactions, but results difficult interpret for human exposure risk assessment. Acute effects like sensory irritation eyes airways unlikely present at very intensity real life conditions based rodent studies known thresholds derived reference values airflow limitation pulmonary irritation. Some possess anti-inflammatory properties. However, long-term as poorly explored. Material product surfaces high deposition velocities significantly impact perceived quality altered emissions reactions.