中国城市林业2025，Vol.23Issue(4)：24-32,9.DOI:10.12169/zgcsly.2025.07.25.0002
高校攀缘植物大气多环芳烃监测与生态风险评估
Monitoring and Ecological Risk Assessment of Atmospheric Polycyclic Aromatic Hydrocarbons(PAHs)Using College Campus Climbers
摘要
Abstract
[Objective]This study aims to explore the ecological functions and application potential of climbing plants in urban air pollution monitoring and prevention.[Method]Using the Sipailou Campus of Southeast University(WEU),the XinZhuang Campus of Nanjing Forestry University(NJFU),and the Xianlin Campus of Nanjing University(NJU)in Nanjing as the study area,seven common climbing plant species were selected as research objects.The content,composition characteristics,source identification,and health risk assessment of polycyclic aromatic hydrocarbons(PAHs)in their leaves were systematically analyzed.[Result]The total PAH content in the leaves of the seven climbing plant species ranged from 958.47 to 1 734.14 ng·g-1(dry weight).The enrichment capacity of Parthenocissus tricuspidata and Hedera helix was higher than that of other species.In terms of spatial distribution,the PAH content in plant leaves at the NJFU sampling site was generally higher than that at WEU and NJU,indicating that traffic density and the intensity of human activities have a prominent impact on their enrichment levels.Component analysis showed that medium-ring(3-ring and 4-ring)PAHs were the main components,followed by high-ring PAHs,while light-ring PAHs had the lowest content.Source identification results revealed that PAHs mainly originated from the incomplete combustion of petroleum products and mixed sources of diesel fuel sources.Through toxic equivalent quantity(TEQ)calculation,it was found that BaA(Benzo(a)anthracene),and benzo[b]fluoranthene(BbF)were the PAH monomers that contributed the most to carcinogenicity.Health risk assessment indicated that although the risk via respiratory exposure was low,dermal contact and ingestion might pose a certain carcinogenic risk to humans,especially adults.Additionally,females were more sensitive to PAHs than males.[Conclusion]This study reveals the species-specific enrichment patterns and source apportionment mechanisms of polycyclic aromatic hydrocarbons(PAHs)in the leaves of climbing plants,demonstrating their potential for biomonitoring atmospheric pollution and assessing health risks.Plant species were identified as a critical factor influencing the deposition and distribution of atmospheric organic pollutants.Anthropogenic emissions were found to play a dominant role in atmospheric pollution within campus environments.Typical atmospheric pollutants in university settings primarily originate from the incomplete combustion of petroleum-based products and mixed diesel fuel sources.Exposure pathways via ingestion and dermal contact were also identified as significant and should not be overlooked.关键词
高校绿色空间/攀缘植物/多环芳烃/组分特征/累积特征/源解析Key words
university green space/climbing plant/polycyclic aromatic hydrocarbon/component characteristics/accumulation characteristics/source analysis引用本文复制引用
吕晓倩,李敏,王子寒,汪瑞军..高校攀缘植物大气多环芳烃监测与生态风险评估[J].中国城市林业,2025,23(4):24-32,9.基金项目
安徽省哲学社会科学规划项目(AHSKQ2021D146) （AHSKQ2021D146）
