Wang Teng, Li Baojie, Huang Tao, Jiang Wanyanhan, Yang Yang, Liao Hong
College of Oceanography, Hohai University, Nanjing, 210098, China.
Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
Environ Geochem Health. 2023 May;45(5):1429-1443. doi: 10.1007/s10653-022-01271-3. Epub 2022 Apr 24.
The Yangtze River Delta (YRD), which is the most developed region in China, suffers from atmospheric polycyclic aromatic hydrocarbons (PAH) pollution. However, the long-term spatiotemporal variation of atmospheric PAHs and the lung cancer risk caused by PAH exposure in the YRD remain unclear. Herein, we simulated the daily atmospheric concentration of benzo[a]pyrene (BaP, the most carcinogenic PAH) from 2001 to 2016 using an atmospheric transport model. During this period, the atmospheric BaP concentration showed a general trend of first increasing and then decreasing (average BaP concentration = 0.50 ± 0.12 ng/m) and was highest in 2005 (0.72 ng/m). Moreover, the BaP concentration in Jiangsu and Shanghai was 5.17- and 4.98-fold higher than that in Zhejiang. BaP pollution was severe in Jiangsu during the winter. The average area proportion of BaP exceeding the national standard in winter in Jiangsu was 69.09%. The population-weighted incremental lifetime cancer risk from 2001 to 2016 ranged 6.67 × 10-1.50 × 10, and the excess lung cancer cases ranged 1054-2130. Compared with 2005, excess lung cancer cases in the YRD decreased by 49.49% in 2016. Reducing BaP pollution in winter in Jiangsu is crucial for reducing lung cancer risk in the YRD.
长江三角洲（YRD）是中国最发达的地区，却遭受大气多环芳烃（PAH）污染。然而，长江三角洲地区大气PAHs的长期时空变化以及PAH暴露导致的肺癌风险仍不明确。在此，我们使用大气传输模型模拟了2001年至2016年苯并[a]芘（BaP，最具致癌性的PAH）的每日大气浓度。在此期间，大气BaP浓度总体呈先上升后下降的趋势（平均BaP浓度 = 0.50±0.12 ng/m），2005年最高（0.72 ng/m）。此外，江苏和上海的BaP浓度分别比浙江高5.17倍和4.98倍。江苏冬季BaP污染严重。江苏冬季BaP超标面积平均比例为69.09%。2001年至2016年，人口加权增量终生癌症风险范围为6.67×10 - 1.50×10，超额肺癌病例范围为1054 - 2130例。与2005年相比，2016年长江三角洲地区的超额肺癌病例减少了49.49%。减少江苏冬季的BaP污染对于降低长江三角洲地区的肺癌风险至关重要。
