典型工业源下风向居民住宅区PM2.5暴露评价

摘要

Indoor and outdoor PM2.5 concentrations were monitored simultaneously using MiniVol samplers in a residence in the downwind area of a steel plant in Guangzhou from October to November, 2010. A survey of 24 h time-activity patterns of the downwind residents was also conducted during the sampling campaign. Potential exposure doses (D1) and exposure concentrations of PM2.5 of the residents in the community were estimated, and possible influencing factors were investigated. The D1 and daily exposure concentration of PM2.5 of the residents in the community were 960. 8 μg/d and 120. 1 μg/m3, respectively. D1 of PM2.5 of the residents in the community per unit of body weight ( Dv ) was 36. 1 μg/( kg · d ). The factors influencing D1 were shown to be: weekdays/weekends > exposure concentration > education level. The factors influencing Dv were shown to be; body weight > age > education level > weekdays/weekends > exposure concentration. Gender was not a significant factor influencing the potential exposure doses of PM2.5.%采用便携式PM2.5采样仪于2010年10-11月对典型工业源——某钢铁厂下风向某住宅区室内、外的ρ(PM2.5)进行同步监测,同时对该区域居民每日时间-活动模式进行问卷调查,以评价居民住宅区内PM2.5潜在暴露剂量和暴露浓度(以ρ计)及探讨其影响因素.结果表明；该钢铁厂下风向居民单位体质量、个体的住宅区内PM2.5潜在暴露剂量分别为36.1 μg/(kg·d)、960.8μg/d,日均暴露浓度为120.1 μg/m3.影响居民个体住宅区内PM2.5潜在暴露剂量的因素依次为工作日/周末＞暴露浓度＞文化程度；影响居民单位体质量住宅区内PM2.5潜在暴露剂量的因素依次为体质量＞年龄＞文化程度＞工作日/周末＞暴露浓度；性别与二者均没有显著相关关系.