室内空气中的气态多环芳烃的被动采样监测

利用自制被动采样装置,在2011年秋冬季对南京市部分地区室内空气中5种气态多环芳烃(PAHs)(萘、苊烯、苊、芴、菲)进行了为期100d的连续采样检测,被动采样器的采样速率为0.012m3/d,5种PAHs的回收率在63%～105%之间,方法检出限在1.1～2.4ng范围内。结果表明,南京市5处不同室内环境空气中萘的浓度最高,占总量的90%以上。室内环境空气中5种PAHs的总浓度为230～1564ng/m3。住宅内人体对5种PAHs的暴露速率为479～560ng/h。

Passive Sampling of Gaseous PAHs Monitoring in Indoor Air

The current concentration levels of five PAHs （Naphthalene, Acenaphthylene, Acenaphthene, Fluorene and Phenanthrene） in the indoor air was investigated using self-prepared passive sampler in buildings with different functions in Nanjing. Through nearly 100 days of continuous passive sampling, the average passive sampling rate of the sampler was 8.42mL/min calculated by active sampling. The recoveries of five PAHs were 64%～105%. The detection limits ranged from 1.1～2.4ng. The results showed that the levels of total five gaseous PAHs （mainly in 2～3 rings）in the indoor air ranged from 230～1564ng/m^3, and more than 90% of the total PAHs was Naphthalene. The potential total exposure rates of the five gaseous PAHs were 479～560ng/h for juvenile and adults （including senior people）.