Journal
ENVIRONMENTAL POLLUTION
Volume 218, Issue -, Pages 322-330Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2016.07.007
Keywords
Elemental pollutants; Soil pollution; Industrial pollution; Human health environmental risk assessment; Gamma ray radiation; Natural radioactivity elements
Categories
Funding
- Spanish Ministry of Science and Innovation [CTQ2014-52309-P]
- Spanish Agency of International Cooperation for Development (AECID project) [A1/037813/11]
- Junta de Extremadura [GR15087]
- FEDER
- AES-GENER (Puchuncavi-Ventanas)
- Junta de Extremadura (Spain) [PO 14021]
Ask authors/readers for more resources
The Punchuncavi Valley in central Chile, heavily affected by a range of anthropogenic emissions from a localized industrial complex, has been studied as a model environment for evaluating the spatial gradient of human health risk, which are mainly caused by trace elemental pollutants in soil. Soil elemental profiles in 121 samples from five selected locations representing different degrees of impact from the industrial source were used for human risk estimation. Distance to source dependent cumulative non-carcinogenic hazard indexes above I for children (max 4.4 - min 1.5) were found in the study area, ingestion being the most relevant risk pathway. The significance of health risk differences within the study area was confirmed by statistical analysis (ANOVA and HCA) of individual hazard index values at the five sampling locations. As was the dominant factor causing unacceptable carcinogenic risk levels for children (<10(-4)) at the two sampling locations which are closer to the industrial complex, whereas the risk was just in the tolerable range (10(-6) 10(-4)) for children and adults in the rest of the sampling locations at the study area. Furthermore, we assessed gamma ray radiation external hazard indexes and annual effective dose rate from the natural radioactivity elements (Ra-226, Th-232 and K-40) levels in the surface soils of the study area. The highest average values for the specific activity of Th-232 (31 Bq kg(-1)), K-40 (615 Bq kg(-1)), and Ra-226 (25 Bq kg(-1)) are lower than limit recommended by OECD, so no significant radioactive risk was detected within the study area. In addition, no significant variability of radioactive risk was observed among sampling locations. (C) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available