研究报告

  • 吴颜岐,刘莹,宋帅,史雅娟,杨胜杰.环黄渤海地区土壤介质中PFOS网格排放清单估算及不确定性分析[J].环境科学学报,2022,42(2):396-408

  • 环黄渤海地区土壤介质中PFOS网格排放清单估算及不确定性分析
  • Estimating grid emission inventory and uncertainty analysis of perfluorooctane sulfonate in soils in the Yellow-Bohai Sea region
  • 基金项目:国家重点研发计划项目(No.2019YFC1407803);国家自然科学基金项目(No.41761144053, 41202165, 41102149);中国科学院国际大科学计划项目(No.121311KYSB20190029)
  • 作者
  • 单位
  • 吴颜岐
  • 广西大学,土木建筑工程学院,南宁 530004;中国科学院生态环境研究中心,城市与区域生态国家重点实验室,北京 100085;中国科学院大学,北京 100049
  • 刘莹
  • 广西大学,土木建筑工程学院,南宁 530004
  • 宋帅
  • 中国科学院生态环境研究中心,城市与区域生态国家重点实验室,北京 100085;中国科学院大学,北京 100049
  • 史雅娟
  • 中国科学院生态环境研究中心,城市与区域生态国家重点实验室,北京 100085;中国科学院大学,北京 100049
  • 杨胜杰
  • 中国科学院生态环境研究中心,城市与区域生态国家重点实验室,北京 100085;中国科学院大学,北京 100049
  • 摘要:全氟辛烷磺酸(PFOS)是一种《斯德哥尔摩公约》所列的持久性有机污染物.加强对土壤中PFOS排放的合理认识,并追踪其污染源,对减少和控制土壤中污染物具有重要意义.然而,很少有研究涉及土壤介质中PFOS生命周期排放清单.基于PFOS生命周期评价法构建了2018年环黄渤海地区各污染源排放到土壤介质中的PFOS排放因子,估算了20 km×20 km土壤介质中PFOS浓度,研究了PFOS空间分布特征、风险及其来源贡献,并定量分析了估算方法的不确定性.结果表明,2018年环黄渤海地区排放到土壤中PFOS的总量为1476.39 kg,大气沉降(444.89 kg)是土壤PFOS的主要来源,其次是氟虫胺使用(347.83 kg)、污泥农用(333.66 kg)和消防泡沫使用(322.23 kg),以上4个排放源占土壤中排放总量的98%.从空间分布来看,浓度高值主要分布在各个城市人口密集区域,消防泡沫是主要排放源,而人口稀疏网格中氟虫胺使用和污泥农用是主要排放源.因此,应推进落实禁产行业停产措施,加快限产行业替代工作,推动非故意排放行业的产业升级.
  • Abstract:Perfluorooctane sulfonate (PFOS) is one of the persistent organic pollutants listed under the Stockholm Convention. Reasonably understanding the emissions of PFOS in soils and tracing the pollution sources are important for the reduction and control of pollutants. However, few studies have involved the PFOS life cycle emission inventory of soil segmentations. This study constructed the PFOS emission factors from various pollution sources based on the PFOS life cycle assessment method in the Yellow-Bohai Sea region in 2018. The concentrations of PFOS in soil segmentations by 20 km×20 km were estimated, and the spatial distribution, risks, and source contributions of PFOS were studied. The uncertainty of the estimation method was analyzed quantitatively. Results showed that the amount of emissions into soils was 1476.39 kg. Atmospheric deposition (444.89 kg) was the main source of PFOS in soils, followed by the use of sulfluramid (347.83 kg), sludge farm application (333.66 kg), and fire foam use (322.23 kg), which all sources accounted for 98% of the total emissions in the research area. From the perspective of spatial distribution, the high concentration values were mainly distributed in the densely populated grids of each city. Fire foam use was the main emission source in the grids with a dense population. Sulfluramid and sludge farm applications were the main emission sources in grids with a sparse population. Therefore, the implementation of PFOS production cut-off measures in some industries should be promoted, the substitution of restricted industries should be sped up, and the industrial upgrading of industries with unintentional emissions should be promoted.

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