室内空气中苯并[a]芘的健康限值研究

应用健康风险评估方法，基于中国人群暴露参数特征推导我国不同人群的室内苯并a]芘（Benzoa]pyrene，BaP）浓度限值.并通过文献调研收集我国室内空气中BaP浓度，运用蒙特卡洛方法计算不同人群的BaP暴露致癌风险，探讨限值的可达性.研究发现，基于具有全国代表性人群暴露特征推导所得的BaP限值的平均值±标准偏差为（1.38±0.32）ng/m³，与我国现行《室内空气质量标准》（GB18883-2002）中的BaP限值相近.基于城市男性、女性暴露特征推导的健康限值分别为1.34ng/m³和1.40ng/m³，基于农村男性、女性暴露特征推导的限值分别为1.35ng/m³和1.41ng/m³.基于低年龄人群暴露特征推导的限值要低于高年龄段人群限值.我国大部分室内空气BaP实际监测浓度高于本研究推导出的健康限值，建议持续加强室内清洁能源使用和控烟等措施，减少BaP室内暴露风险.

Research on benzo[a]pyrene criteria in indoor air

Indoor benzoa]pyrene (Benzoa]pyrene, BaP) concentration criteria for different populations in China was derived at the acceptable risk level of 10^-6, based on the characteristics of Chinese exposure factors. To explore the accessibility of the health criteria, BaP concentrations in indoor air in China were collected through systematic literature surveys, Monte Carlo method was used to simulate the carcinogenic risk of BaP exposure in different populations. The results indicatedthe average BaP threshold value was (1.38±0.32)ng/m³(Mean±SD). The average values of urban male and female health threshold were 1.34ng/m³ and 1.40ng/m³, respectively, and rural males and females were 1.35ng/m³ and 1.41ng/m³. Research on the different age groups indicated that stricter threshold values were required to protect children. Majority number of indoor BaP concentrations reported in China were higher than the threshold values derived from this research. This implies that currently indoor clean fuel policy and strict smoking control measures are necessary to mitigate BaP exposure in China.