Department of Chemistry, Colorado State University, Fort Collins, Colorado 80524, United States.
Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, Colorado 80521, United States.
Environ Sci Technol. 2022 Sep 6;56(17):12148-12157. doi: 10.1021/acs.est.2c01381. Epub 2022 Aug 11.
Analytical capabilities in atmospheric chemistry provide new opportunities to investigate indoor air. HOMEChem was a chemically comprehensive indoor field campaign designed to investigate how common activities, such as cooking and cleaning, impacted indoor air in a test home. We combined gas-phase chemical data of all compounds, excluding those with concentrations <1 ppt, with established databases of health effect thresholds to evaluate potential risks associated with gas-phase air contaminants and indoor activities. The chemical composition of indoor air is distinct from outdoor air, with gaseous compounds present at higher levels and greater diversity─and thus greater predicted hazard quotients─indoors than outdoors. Common household activities like cooking and cleaning induce rapid changes in indoor air composition, raising levels of multiple compounds with high risk quotients. The HOMEChem data highlight how strongly human activities influence the air we breathe in the built environment, increasing the health risk associated with exposure to air contaminants.
大气化学分析能力为研究室内空气提供了新的机会。HOMEChem 是一项全面的室内化学现场研究，旨在研究烹饪和清洁等常见活动如何影响测试房屋内的室内空气。我们将所有化合物（浓度低于 1 ppt 的化合物除外）的气相化学数据与健康影响阈值的现有数据库相结合，以评估与气相空气污染物和室内活动相关的潜在风险。室内空气的化学成分与室外空气明显不同，室内气态化合物的浓度更高，种类更多，因此预测的危害系数也更高。烹饪和清洁等常见的家庭活动会导致室内空气成分迅速变化，使多种高危害系数化合物的浓度升高。HOMEChem 数据突出了人类活动对我们在建筑环境中呼吸的空气的强烈影响，增加了与空气污染物接触相关的健康风险。
