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Source-specific health risks apportionment of soil potential toxicity elements combining multiple receptor models
Mei Lei1, Kai Li1, Guanghui Guo1
1Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Identifying soil potential toxicity elements (PTEs) sources is crucial for human health risk assessment. As-related smelting activities pose the highest health risks, necessitating targeted pollution control strategies.
Area of Science:
- Environmental Science
- Toxicology
- Risk Assessment
Background:
- Soil contamination by potential toxicity elements (PTEs) poses risks to human health.
- Understanding source-specific risks is vital for effective pollution control and risk prevention.
Purpose of the Study:
- To identify and apportion sources of soil PTEs in a mining and industrial area.
- To assess source-specific human health risks, including probabilistic risk assessment.
Main Methods:
- Multivariate statistics, APCS/MLR, PMF, and GIS mapping were employed for source apportionment.
- Monte Carlo simulation was used for probabilistic health risk assessment.
- Pollution factor and geo-accumulation index were calculated to assess soil pollution levels.
Main Results:
- Arsenic (As) and Cadmium (Cd) were identified as primary soil pollutants.
- Mixed sources, agriculture, mining, and As-related smelting were identified as PTE sources.
- As-related smelting activities contributed most significantly to non-carcinogenic and carcinogenic health risks.
Conclusions:
- As-related smelting activities represent the priority source of soil PTEs and associated health risks.
- Targeted prevention and control strategies for As-related smelting are recommended.
- Health risks for children and adults showed similar trends, emphasizing the need for broad protective measures.
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