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Chemistry in Industry : Journal of Chemists and Chemical Engineers of Croatia, Vol. 66 No. 1-2, 2017.

Professional paper

https://doi.org/10.15255/KUI.2016.046

Accumulation Characteristics and Chemical Speciation of Cd, Zn and Pb in Soils Impacted by a Pb-Zn Mining Area

Shunhong Huang ; Hunan Research Institute of Nonferrous Metals, Changsha 410 100, P.R. China
Qian Li ; Hunan Research Institute of Nonferrous Metals, Changsha 410 100, P.R. China
Yi Yang ; College of Resources and Environment, Huazhong Agricultural University, Wuhan 430 070, P.R. China
Cuiyu Yuan ; Hunan Research Institute of Nonferrous Metals, Changsha 410 100, P.R. China
Kun Ouyang ; Hunan Research Institute of Nonferrous Metals, Changsha 410 100, P.R. China
Bing Wang ; Hunan Research Institute of Nonferrous Metals, Changsha 410 100, P.R. China
Si Wan ; Hunan Research Institute of Nonferrous Metals, Changsha 410 100, P.R. China

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Abstract

An exploratory study on soil contamination of Cd, Zn, Pb was carried out in the surroundings of a historical, abandoned Pb-Zn mining area in Hunan Province, China. The accumulation in soils and representative plants of Cd, Zn, Pb and their chemical speciation were investigated. The obtained results indicated that Cd, Zn and Pb presented a significant contamination compared with Environmental Quality Standards for Soils in China (GB 15618-1995). The geoaccumulation index suggested the degree of contamination: Pb > Cd > Zn. The modified BCR sequential extraction results showed that Cd, Zn, and Pb exist in soil in a relatively unstable form, and will exert a bad effect on the plants grown in the soil. Heavy metals in oranges collected in the sampling area were tested to identify the extent of pollution. The results confirmed that the sampled oranges were polluted with Pb, which exceeded the national food safety standard by 3.4 – 6.3 times. Heavy metals in branches and leaves showed different accumulation characteristics than the fruits.


This work is licensed under a Creative Commons Attribution 4.0 International License.

Keywords

heavy metals; chemical speciation; geoaccumulation index; oranges; accumulation

Hrčak ID:

173718

URI

https://hrcak.srce.hr/173718

Publication date:

5.2.2017.

Article data in other languages: croatian

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