城市公园中粉尘PAHs的特定来源的概率性健康风险评估,基于正矩阵因数分解和蒙特卡洛模拟
Haijing Duan1,2,3,4, Yanfeng Wang1,2,3,4, Haoxin Shen1,2,3,4
1College of Geography and Environmental Science, Henan University, Kaifeng, 475004, China.
Environmental geochemistry and health
|September 24, 2024
概括
城市公园灰尘中的多环芳 (PAH) 构成癌症风险,尤其是儿童. 交通排放是主要的来源,突出了有针对性的污染控制战略的需要.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 毒理学 毒理学 毒理学
背景情况:
- 城市公园灰尘中的多环芳 (PAH) 存在潜在的健康风险.
- 有效的管理需要了解和优先考虑PAH来源.
研究的目的:
- 为了确定城城市城市公园灰尘中PAHs的来源.
- 评估不同人口群体的相关健康风险,特别是致癌风险.
主要方法:
- 使用气体染色体质谱仪 (GC-MS) 来分析来自13个公园的尘埃样本中的PAH.
- 使用正矩阵因子化 (PMF) 模型进行源分配.
- 使用蒙特卡洛模拟和灵敏度分析进行癌症风险评估.
主要成果:
- 公园灰尘中的PAH含量在332.34至7823.03μg·kg-1之间,平均值为1756.59μg·kg-1.
- 确定了四个主要来源:运输 (33.74%),运输 - 煤炭/生物质燃烧 (25.59%),焦炭炉 (22.14%) 和石油 (18.54%).
- 公园灰尘中的PAHs对儿童,成年男性和成年女性构成潜在的癌症风险,儿童面临更高的风险,主要来自运输来源.
结论:
- 城市公园灰尘在Kaifeng被PAHs污染,需要采取污染控制措施.
- 运输排放是PAHs的主要来源和公园尘埃中的致癌风险.
- 毒性等效度 (CS) 和暴露时间 (ED) 是影响致癌风险的关键因素.
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