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Assessing the Risk of Total and Available Potentially Toxic Elements in Agricultural Soil in Typical Mining Areas in Xiangjiang River Basin, Hunan Province
- Source :
- Minerals, Vol 11, Iss 953, p 953 (2021), Minerals, Volume 11, Issue 9
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- In this study, soil and rice samples from 85 sites in six cities in Hunan Province were analyzed for Cu, Zn, Pb, Cd, Hg, Mn, and Co (total and bioavailable concentrations for soil) in July 2014. The results indicated that the total concentrations of Cu, Zn, Pb, Cd, and Hg in soil had increased significantly compared with the 1980s, and were correlated with their bioavailable concentrations in soil positively. The total concentrations of Cd and Co in soil were correlated with those in rice. Bioavailable concentrations of Cd, Mn, Co, Pb, and Cu represented 64.4%, 33.2%, 12.0%, 11.6%, and 6.1% of the total soil concentrations, respectively. The bioavailable concentrations of Cd and Co in soil had a extremely significant (p &lt<br />0.01) positive correlation with those in rice, suggesting that bioavailable concentrations was a better indicator for soil potentially toxic elements contamination. The pH values had a significant influence on the bioavailability of Cd and Cu and the amounts taken up by rice. The Cd contamination in 27.0% rice samples exceeded World Health Organization recommended thresholds. The results added basic pollution distribution data, further revealing the relationships of metals in soil and crops and would offer great help to the metallic pollution control in these areas.
- Subjects :
- Pollution
media_common.quotation_subject
Drainage basin
Positive correlation
complex mixtures
World health
rice contamination
media_common
geography
soil pollution
geography.geographical_feature_category
business.industry
Chemistry
Geology
Contamination
industrial and agricultural regions
Mineralogy
Geotechnical Engineering and Engineering Geology
Soil contamination
potentially toxic elements
Bioavailability
Agriculture
Environmental chemistry
business
risk evaluation
QE351-399.2
Subjects
Details
- ISSN :
- 2075163X
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Minerals
- Accession number :
- edsair.doi.dedup.....228636a0f31cd5016c86127f4eb50aa7