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Pollution, fractionation, and mobility of Pb, Cd, Cu, and Zn in garden and paddy soils from a Pb/Zn mining area.
- Source :
-
Environmental monitoring and assessment [Environ Monit Assess] 2010 Sep; Vol. 168 (1-4), pp. 215-22. Date of Electronic Publication: 2009 Aug 08. - Publication Year :
- 2010
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Abstract
- This study was conducted to investigate the pollution load index, fraction distributions, and mobility of Pb, Cd, Cu, and Zn in garden and paddy soils collected from a Pb/Zn mine in Chenzhou City, China. The samples were analyzed using Leleyter and Probst's sequential extraction procedures. Total metal concentrations including Pb, Cd, Cu, and Zn exceeded the maximum permissible limits for soils set by the Ministry of Environmental Protection of China, and the order of the pollution index was Cd > Zn > Pb > Cu, indicating that the soils from both sites seriously suffered from heavy metal pollution, especially Cd. The sums of metal fractions were in agreement with the total contents of heavy metals. However, there were significant differences in fraction distributions of heavy metals in garden and paddy soils. The residual fractions of heavy metals were the predominant form with 43.0% for Pb, 32.3% for Cd, 33.5% for Cu, and 44.2% for Zn in garden soil, while 51.6% for Pb, 40.4% for Cd, 40.3% for Cu, and 40.9% for Zn in paddy soil. Furthermore, the proportions of water-soluble and exchangeable fractions extracted by the selected analytical methods were the lowest among all fractions. On the basis of the speciation of heavy metals, the mobility factor values of heavy metals have the following order: Cd (25.2-19.8%) > Cu (22.6-6.3%) > Zn (9.6-6.0%) > Pb (6.7-2.5%) in both contaminated soils.
- Subjects :
- Cadmium chemistry
Cadmium isolation & purification
Chemical Fractionation
Copper chemistry
Copper isolation & purification
Environmental Monitoring
Gardening
Lead chemistry
Lead isolation & purification
Mining
Soil Pollutants chemistry
Soil Pollutants isolation & purification
Zinc chemistry
Zinc isolation & purification
Cadmium analysis
Copper analysis
Lead analysis
Soil Pollutants analysis
Zinc analysis
Subjects
Details
- Language :
- English
- ISSN :
- 1573-2959
- Volume :
- 168
- Issue :
- 1-4
- Database :
- MEDLINE
- Journal :
- Environmental monitoring and assessment
- Publication Type :
- Academic Journal
- Accession number :
- 19669583
- Full Text :
- https://doi.org/10.1007/s10661-009-1105-4