| 某工业城市大气颗粒物中PAHs的粒径分布及人体呼吸系统暴露评估 |
| |
| 引用本文： | 王娟,郭观林,秦宁,侯荣,杨敏,康艺瑾,段小丽.某工业城市大气颗粒物中PAHs的粒径分布及人体呼吸系统暴露评估[J].环境科学,2019,40(10):4345-4354. |
| |
| 作者姓名： | 王娟 郭观林 秦宁 侯荣 杨敏 康艺瑾 段小丽 |
| |
| 作者单位： | 北京科技大学能源与环境学院,北京100083;中国环境科学研究院土壤与固废环境研究所,环境基准与风险评估国家重点实验室,北京100012;中国环境科学研究院土壤与固废环境研究所,环境基准与风险评估国家重点实验室,北京100012;北京科技大学能源与环境学院,北京,100083 |
| |
| 基金项目： | 国家重点研发计划项目（2016YFC1302501） |
| |
| 摘 要： | 为研究大气颗粒物中多环芳烃(PAHs)的粒径分布与富集特征,确定不同粒径颗粒物中PAHs在人体呼吸系统各器官内的沉积浓度,以准确评估其人体呼吸暴露风险,选择东北某钢铁工业城市,在采暖期和非采暖期按粒径对大气颗粒物进行分级采样,用高效液相色谱对样品中14种优控PAHs进行分析,并将大气颗粒物粒径分级采样技术与人体呼吸系统内部沉积模型结合进行呼吸暴露评估.结果表明,大气颗粒物中总PAHs浓度变化显著,采暖期(743. 9 ng·m~(-3))高于非采暖期(169. 0ng·m~(-3)),多数PAHs(86. 3%～89. 9%)与大气中粒径≤2. 06μm的细颗粒有关;中低分子量PAHs单体呈双峰型,峰值位于1. 07～2. 06μm和7. 04～9. 99μm.高分子量PAHs呈单峰分布,峰值位于1. 07～2. 06μm; 4环PAHs的含量占主导优势,为总PAHs浓度的40%;在采暖期和非采暖期分别有53. 3%和55. 3%的颗粒态PAHs沉积在人体呼吸系统的不同器官,分别采用人体呼吸系统沉积浓度和在颗粒物上的总浓度计算该地区人群颗粒态PAHs的终身致癌超额风险值(incremental lifetime cancer risk,R值),成人的R值在采暖期为1. 3×10-5和2. 9×10-5,非采暖期为3. 1×10-6和6. 0×10-6,儿童的R值在采暖期为1. 0×10-5和2. 3×10-5,非采暖期为2. 4×10-6和4. 8×10-6.结果表明,颗粒物粒径分布直接影响呼吸系统沉积浓度和致癌风险,将分级采样技术与呼吸系统沉降模型结合方法可有效避免对人体呼吸暴露量的过度评估.
|
| 关 键 词： | 钢铁工业城市 多环芳烃(PAHs) 粒径分布 组成特征 呼吸系统 沉积浓度 暴露评估 |
| 收稿时间： | 2019/3/7 0:00:00 |
| 修稿时间： | 2019/5/9 0:00:00 |
Size Distribution Characteristics and Inhalation Exposure of Particle-Bound PAHs in an Industrial City |
| |
| WANG Juan,GUO Guan-lin,QIN Ning,HOU Rong,YANG Min,KANG Yi-jin and DUAN Xiao-li.Size Distribution Characteristics and Inhalation Exposure of Particle-Bound PAHs in an Industrial City[J].Chinese Journal of Environmental Science,2019,40(10):4345-4354. |
| |
| Authors: | WANG Juan GUO Guan-lin QIN Ning HOU Rong YANG Min KANG Yi-jin and DUAN Xiao-li |
| |
| Institution: | School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;State Key Laboratory of Environmental Criteria and Risk Assessment, Department of Soil Pollution and Control, Chinese Research Academy of Environmental Sciences, Beijing 100012, China,State Key Laboratory of Environmental Criteria and Risk Assessment, Department of Soil Pollution and Control, Chinese Research Academy of Environmental Sciences, Beijing 100012, China,School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China,School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China,State Key Laboratory of Environmental Criteria and Risk Assessment, Department of Soil Pollution and Control, Chinese Research Academy of Environmental Sciences, Beijing 100012, China,School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China and School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China |
| |
| Abstract: | |
| |
| Keywords: | steel industrial city polycyclic aromatic hydrocarbons (PAHs) particle size component distribution respiratory system deposition concentrations risk assessment |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
|
