Journal of Shandong University (Health Sciences) ›› 2021, Vol. 59 ›› Issue (12): 127-133.doi: 10.6040/j.issn.1671-7554.0.2021.0833

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Health risk assessment of heavy metals in multiple environmental media through multi-pathways in a certain area in 2017

ZHANG Yingying1, YUE Shuai1,2, DU Yanjun1,3,4, BAN Jie1, LI Tiantian1   

  1. 1. China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China;
    2. Tianjin Medical College, Tianjin 300222, China;
    3. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
    4. University of Chinese Academy of Sciences, Beijing 100049, China
  • Published:2021-12-29

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Abstract: Objective To evaluate the pollution levels and health risks of heavy metals in various environmental media in a certain area, and to provide a basis for formulating relevant policies and adopting intervention measures to protect public health. Methods Data of five heavy metals(As, Cd, Cr, Pb, Hg)in PM2.5 in ambient air, drinking water and soil were collected through Chinese Environmental Public Health Tracking. The health risks of the metals were calculated. Results In 2017, the median concentrations of As, Cd, Cr(VI), Pb, and Hg were 1.98, 0.46, 0.41, 21.00 and 0.10 ng/m3 in PM2.5 in ambient air; 1.25, 0.25, 2.00, 1.25 and 0.05 μg/L in drinking water; 7.82, 0.17, 8.92, 27.50 and 0.08 mg/kg in soil, respectively. Hazard quotient(HQ)and hazard index(HI)of the five heavy metals in PM2.5 in ambient air, drinking water and soil were all below 1. Carcinogenic risks(CR)of As, Cd, and Cr(VI)were 5.26×10-5, 4.49×10-6 and 2.80×10-5 in drinking water through oral route. CR of As and Cr(VI)were 8.51×10-6 and 4.92×10-6 in PM2.5 in ambient air through inhalation pathway and 8.77×10-6 and 3.33×10-6 in soil through oral route. Cumulative carcinogenic risk(CCR)of As, Cd, Cr(VI)were 7.02×10-5, 5.48×10-6 and 3.63×10-5, respectively. Conclusion In 2017, the non-carcinogenic risks of the five heavy metals in the multiple environmental media through multiple exposure pathways in a certain district were acceptable. The carcinogenic risks of As, Cd, and Cr(VI)were higher than the acceptable risk and should be paid attention to.

Key words: Heavy metals, Environmental media, Multi-pathways, Exposure assessment, Health risk

CLC Number: 

  • R12
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