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Ecological and human health hazards of soil heavy metals after wildfire: A case study of Liangshan Yi autonomous prefecture, China.
Rao, Lin; Zheng, Chao; Chen, Jian-Bin; Cai, Jun-Zhuo; Yang, Zhan-Biao; Xu, Xiao-Xun; Lv, Guo-Chun; Xu, Chang-Lian; Wang, Gui-Yin; Man, Yu-Bon; Wong, Ming-Hung; Cheng, Zhang.
Afiliación
  • Rao L; College of Environment, Sichuan Agricultural University, Chengdu, China.
  • Zheng C; College of Environment, Sichuan Agricultural University, Chengdu, China.
  • Chen JB; College of Source and Environment, Xichang University, Xichang, China.
  • Cai JZ; College of Environment, Sichuan Agricultural University, Chengdu, China.
  • Yang ZB; College of Environment, Sichuan Agricultural University, Chengdu, China.
  • Xu XX; College of Environment, Sichuan Agricultural University, Chengdu, China.
  • Lv GC; College of Environment, Sichuan Agricultural University, Chengdu, China.
  • Xu CL; College of Environment, Sichuan Agricultural University, Chengdu, China.
  • Wang GY; College of Environment, Sichuan Agricultural University, Chengdu, China.
  • Man YB; Consortium on Health, Environment, Education, and Research (CHEER), and Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong, China.
  • Wong MH; Consortium on Health, Environment, Education, and Research (CHEER), and Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong, China.
  • Cheng Z; College of Environment, Sichuan Agricultural University, Chengdu, China. Electronic address: cz@sicau.edu.cn.
Chemosphere ; 352: 141506, 2024 Mar.
Article en En | MEDLINE | ID: mdl-38395367
ABSTRACT
Soil samples were collected in at different depths from the conflagration area in Liangshan Yi Autonomous Region, China, to investigate the distribution characteristics and ecological and human health risks of heavy metals after a wildfire. The samples collected comprise wildfire ash (WA) above the soil surface, ash soil (AS) 0-5 cm, and plain soil (PS) 5-15 cm below the soil surface. Additionally, reference soil (RS) was collected from a nearby unburned area at the same latitude as the conflagration area. The results showed that the concentrations of zinc (Zn), copper (Cu), lead (Pb), and cadmium (Cd) in the WA and AS were significantly higher than in reference soil (RS) (p < 0.05). Concentrations of Pb in the PS were 2.52 times higher than that in RS (17.9 mg kg-1) (p < 0.05). The AS and WA had the highest Index of potential ecological risks (RI > 600). In addition, The Cd in AS and WA contributed the most to the highest Improved nemerow index (INI) and RI with a contribution of more than 80%. The concentration of heavy metals was used to establish non-carcinogenic effects and cancer risks in humans via three exposure pathways accident ingestion of soil, dermal contact with soil, and inhalation of soil particles. Hazard index (HI) values of each sample were all less than 1, indicating the non-carcinogenic risk was within the acceptable range and would not adversely affect the local population's health. The Cancer risk (CR) values of Cr, As, Cd, and Ni were all below 1 × 10-6, indicating that heavy metal pollution from this wildfire did not pose a cancer risk to residents.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Metales Pesados / Incendios Forestales / Neoplasias Límite: Humans País/Región como asunto: Asia Idioma: En Revista: Chemosphere Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Metales Pesados / Incendios Forestales / Neoplasias Límite: Humans País/Región como asunto: Asia Idioma: En Revista: Chemosphere Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido