Ecology and Environment ›› 2023, Vol. 32 ›› Issue (12): 2103-2114.DOI: 10.16258/j.cnki.1674-5906.2023.12.003

• Papers on “New Pollutants” • Previous Articles     Next Articles

Sources, Spatial-temporal Distribution, and Health Risks of Per- and Polyfluoroalkyl Substances (PFASs) in the Atmospheric Environment: A Review

LI Shuting1(), HU Guanjiu2, LUO Xiaosan1,*()   

  1. 1. International Center for Ecology, Meteorology, and Environment/School of Ecology and Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, P. R. China
    2. Jiangsu Environmental Monitoring Center, Nanjing 210036, P. R. China
  • Received:2023-08-30 Online:2023-12-18 Published:2024-02-05
  • Contact: LUO Xiaosan

大气环境中全(多)氟烷基化合物(PFASs)的来源、分布及健康风险研究进展

李姝亭1(), 胡冠九2, 罗小三1,*()   

  1. 1.南京信息工程大学生态与应用气象学院/生态气象环境研究中心,江苏 南京 210044
    2.江苏省环境监测中心,江苏 南京 210036
  • 通讯作者: 罗小三
  • 作者简介:李姝亭(1999年生),女,硕士研究生,主要从事环境新污染物与健康研究。E-mail: sclwdtz1001@163.com
  • 基金资助:
    国家自然科学基金项目(41977349)

Abstract:

Per- and polyfluoroalkyl substances (PFASs) are a diverse group of emerging persistent organic pollutants (POPs) known for their versatile applications, complicated properties, and associated ecological and health risks through environmental pollution. While previous published reviews have summarized the sources and distribution of PFASs in soil and water ecosystems, this paper aims to fill the crucial gap by a systematic overview of their sources, spatial and temporal distribution, and human health risk assessment in the atmospheric environment. Sources of PFASs in atmosphere include the industrial production and application of fluoropolymers, product consumption, waste treatment, volatilization and sublimation from soil and water environments. The PFASs accumulate in atmospheric particulate matters, showing significant concentration variations across regions and seasons, influenced by the industrial activities, population density, and meteorological parameters. Typically, PFASs have a broader spatial distribution with low concentrations during warm seasons, while the pollution levels are higher and concentrated near emission sources in winter. Over the past decade, the concentration of atmospheric PFASs in China has decreased, but their types have significantly increased, mainly due to the impact of policy measures shifting towards the production of PFASs substitutes. Atmospheric PFASs can enter the human body and induce health risks through the exposure pathways of inhalation, skin uptake, and oral ingestion. Currently, inhalation exposure assessment models are mainly used to assess their health risks. Pollution prevention and control measures in developed regions, such as the United States and Europe, have achieved some reduction in PFAS emissions to environment, but they mostly targeted at single substance, and production is gradually moving towards substitutes with unclear risks. Looking ahead, future research on atmospheric PFASs should delve into the transport and transformation mechanisms, synergistic effects and toxicity risks with other pollutants (e.g., particulate matters), establishing long-term monitoring networks and quantitative source apportionment methods, revealing their health effect mechanisms in depth, and developing systematic and comprehensive human health risk assessment models.

Key words: emerging contaminants, per- and polyfluoroalkyl substances, source apportionment, temporal and spatial distribution, human health risk assessment

摘要:

全氟和多氟烷基化合物(PFASs)是一类极具多样性的新型持久性有机污染物,用途广泛、性质复杂且具有毒性,其环境污染导致的生态和健康危害问题引起了广泛关注。已有综述主要总结了土壤、水体中PFASs的来源和分布,缺乏对大气环境中PFASs污染来源、时空分布及人体健康风险评价的系统归纳,该文对此进行了概括和分析。PFASs可通过含氟聚合物的工业生产和应用、消费品使用、废弃物处理以及土壤和水环境中的挥发和升华过程进入大气环境,易在颗粒物中富集。大气颗粒态PFASs的质量浓度在不同地区和季节间存在显著差异,工业活动、人口密度、气象条件等是主要影响因素,通常在暖季广泛分布但质量浓度较低,冬季则质量浓度较高且多集中于排放源附近。近10年来,中国大气PFASs浓度下降明显,但其种类显著增多,主要归因于政策措施向PFASs替代品生产转型的影响。大气PFASs可通过呼吸暴露、皮肤接触和口腔摄入等途径进入人体从而造成健康风险,目前主要采用吸入暴露评估模型对其进行健康风险评价。污染防控方面,美国、欧洲等发达地区的系列管理措施在一定程度上减少了PFASs的环境排放,但多针对单一物质,且生产逐渐向替代物发展,然而其环境健康风险尚不明确。未来大气PFASs的研究需求和方向包括进一步解析其迁移和转化机制,阐明其与其他污染物(如颗粒物)的协同效应和毒性风险,建立长期监测网络以及定量源解析方法,深入揭示其健康危害机制,并建立系统全面的人体健康风险评估模型。

关键词: 新污染物, 全(多)氟烷基物质, 来源解析, 时空分布, 人体健康风险评价

CLC Number: