Abstract
This study was conducted in Dachang, a small mining town in Gaungxi Zhuang Autonomous Region in southern China. A total of 23 farmland soil samples and two atmospheric samples of particulate matter less than 10 microns (PM10) were collected in this town. ICP-MS was used to analyze for 20 elements in each of the samples. All of the samples contained some level of heavy metals. The most commonly detected heavy metals detected in the soil samples were: Cd (up to 29.0 mg kg−1), As (up to 776 mg kg−1), Sb (up to 36.8 mg kg−1), Pb (up to 582 mg kg−1), Zn (up to 1379 mg kg−1) and Cu (up to 156 mg kg−1), Mn (up to 1476 mg kg−1). The PM10 content in air samples exceeded the Chinese standard by nearly ten-fold. The most commonly detected heavy metals detected in the PM10 atmospheric samples were Cd (up to 210 mg kg−1), As (up to 15239 mg.kg−1), Sb (up to 445 mg kg−1), Pb (up to 8053 mg kg−1), Zn (up to 13151 mg kg−1) and Cu (up to 673 mg kg−1), Mn (up to 2826 mg kg−1), Mo (up to 120 mg kg−1). All of these heavy metals are associated with significant human health effects ranging from reduced intelligent quotients (IQs) in children (cf. Pb) to cancer (e.g., Cd and As). Müller Geo-accumulation Index (Igeo) and enrichment factor (EF) were used to assess the findings. The results to the two assessments showed the same ranking: Cd > As > Sb > Pb > Zn > Cu > Mn, which would imply that the particulate matter in ambient air was the source of the contamination in the soil. The correlation analysis supported this inference. Upon further examination, ore transportation through the town was identified as the most likely source of contamination. Therefore, steps should be taken to improve the management of the ore transportation in order to protect the farmland and the health of the residents.
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References
Chao L, Zhou QX, Chen S, Cui S (2007) Human health risk assessment of an abandoned metal smelter site in Shenyang, China. Chin J Appl Ecol 18(8):1807–1812 (in Chinese)
Chen TB, Zheng YM, Lei M et al (2005) Assessment of heavy metal pollution in surface soils of urban parks in Beijing, China. Chemosphere 60(4):542–551. doi:10.1016/j.chemosphere.2004.12.072
Dolenec T, Serafimovski T, Tasev G, Dobnikar M, Dolenec M, Rogan N (2007) Major and trace elements in paddy soil contaminated by Pb–Zn mining: a case study of Kočani Field, Macedonia. Environ Geochem Health 29:21–32. doi:10.1007/s10653-006-9057-x
Fernandez-Espinosa AJ, Ternero-Rodrguez M (2004) Study of traffic pollution by metals in Seville (Spain) by physical and chemical speciation methods. Anal Bioanal Chem 379:684–699
Huang SS, Liao QL, Hua M et al (2007) Survey of heavy metal pollution and assessment of agricultural soil in Yangzhong district, Jiangsu Province, China. Chemosphere 67(11):2148–2155. doi:10.1016/j.chemosphere.2006.12.043
Kung HT, Ying LG (1990) Heavy metal concentrations in soils and crops of Baoshan-Wusong area, Shanghai, China. CATENA 17:417–430. doi:10.1016/0341-8162(90)90043-D
Lee SL, Li XD, Zhang G, Li J, Ding AJ, Tao W (2007) Heavy metals and Pb isotopic composition of aerosols in urban and suburban areas of Hong Kong and Guangzhou, South China—Evidence of the long-range transport of air contaminants. Atmos Environ 41(2):432–447. doi:10.1016/j.atmosenv.2006.07.035
Long AH, Liu JJ, Ni CY, Huang GF, Tang HY (2006) Assessment on the characteristic of heavy metals contaminated farmland soil around Guixi Smeltery Jiangxi Province. Chin J Soil Sci 37(6):1212–1217 (in Chinese)
Loska K, Wiechula D, Barska B et al (2003) Assessment of arsenic enrichment of cultivate soils in Southern Poland. Pol J Environ Stud 12(2):187–192
Shu J, Dearing JA, Morse AP, Yu LZ, Yuan N (2001) Determining the sources of atmospheric particles in Shanghai, China, from magnetic and geochemical properties. Atmos Environ 35(15):2615–2625. doi:10.1016/S1352-2310(00)00454-4
Tan MZ, Xu FM, Chen J, Zhang XL, Chen JZ (2006) Spatial prediction of heavy metal pollution for soils in Peri-Urban Beijing, China based on fuzzy set theory. Pedosphere 16(5):545–554. doi:10.1016/S1002-0160(06)60087-8
Wei FS, Chen JS, Wu YY, Zheng CJ (1991) Study on the Background contents on 61 elements of soils in China. Environ Sci 12(4):12–19 (in Chinese)
Winchester JW, Bi MT (1984) Fine and coarse aerosol composition in an urban setting: a case study in Beijing, China. Atmos Environ 18(7):1399–1409. doi:10.1016/0004-6981(84)90047-7
Yoshika K-i (1970) Study of itai-itai disease—from mineral hazard on agriculture to mineral disease of human being(itai-itai disease). Tatara Publishing, Inc. (in Japanese)
Acknowledgments
This work was supported by National Natural Science Fund of China (40861024), Guangxi Science Foundation (Grant Code: Guikeji 0640071) and Guangxi Subsidization Plan for the Innovation Group of Talented Person Team Construction. The authors would like to acknowledge Professor Li Xiangdong of Hongkong Technical University in providing the metal analysis in this study. Helpful discussions with Dr. Donald G. Barnes, Visiting Professor of Chemistry at Guangxi University, were greatly appreciated.
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Zhang, XY., Tang, LS., Zhang, G. et al. Heavy Metal Contamination in a Typical Mining Town of a Minority and Mountain Area, South China. Bull Environ Contam Toxicol 82, 31–38 (2009). https://doi.org/10.1007/s00128-008-9569-4
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DOI: https://doi.org/10.1007/s00128-008-9569-4