Distribution Characteristics and Risk Assessment of Soil Lead at a Children’s Blood Lead Exceeding Area in Fujian

Abstract:

Taking Pingzhai Village in Sanming City of Fujian Provice as the researching area, the village has already outbroken Children’s blood lead exceeding and cause a lot of damage to local children. In order to reveal the reason for this serious consequence and assess the environmental risk of Pb, 24 soil samples including 12 from parent material layer and 12 from the corresponding surface layer and 4 groundwater samples are collected. The Tessier sequential extraction method is applied to analyze different speciation of Pb in soil, and Risk Assessment Code (RAC) and Ratio of Secondary Phase and Primary Phase (RSP) are both applied to evaluate Pb contamination degree and ecological risks. The results show that: the concentration of Pb in soil samples exceeds the soil Pb background values of Fujian Province, and the overall concentration of Pb shows a rising trend from the surface to parent material layer, then their accumulated pollution index range from 5.4 to 54.9 in surface layer and 4.7 to 68.1 in parent material layer. Coefficients of variation of Pb in surface and parent material layer are 79% and 86%, respectively. The lead in soil can be divided into 3 chemical speciation containing T1 (exchangeable speciation and carbonate bounded form), T2 (potential ecological risk form) and T3 (residual speciation) and Pb in soil mainly exists in T2 and T3. There shows a significant positive correlation between T2 or T3 and the total amount of Pb in soil. Pb concentration in groundwater has exceeded limited value of Standards for Drinking Water Quality. RAC and RSP ecological risk assessment results indicate that: environmental risk level of RSP is higher than it of RAC, and the contamination degree and potential environmental risk level of parent material soil are higher than them of surface soil applied by the two assessment methods.

• Periodical: Applied Mechanics and Materials (Volume 768)
• Pages: 175-182
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.768.175
• Online since: June 2015
• Authors: Rui Rui Sun, Hua Qing Chen*, Du Kang Li, Dong Dong Yang
• Keywords: Pb, RAC, RSP, Soil, Speciation of Pb

References

[1] H.M. Ren, J.D. Wang, G.P. Wang, X.L. Zhang, C.M. Wang. Influence of soil lead upon children blood lead in Shenyang City. Environmental Science. 26(2005)153-158.

[2] M.D. Lewin, S. Sarasua, P.A. Jones. A multivariate linear regression model for predicting children' blood lead levels based on soil lead levels: a study at four superfund sites. Environmental Research. 81(1999) 52-61.

DOI: 10.1006/enrs.1998.3952

[3] J.A. Caruso, B. Klaue, B. Michalke, D. MRocke. Group assessment: elemental speciation. Ecotoxicology and Environmental Safety. 56 (2003) 32-44.

DOI: 10.1016/s0147-6513(03)00048-4

[4] M. Yaman, Y. Dilgin, S. Gucer. Speciation of lead in soils and relation with its concentration in fruits. Analytica Chimica Acta, 410(2000) 119-125.

DOI: 10.1016/s0003-2670(99)00895-8

[5] Y. Jin, F. Chen, L.Z. Li, X. Zhang. Study on the transportation and speciation of heavy metal cadmium in soil. Environmental Science & Technology. 34(2011)447-450. (in Chinese).

[6] A. Tessier, P.G.C. Campbell, M. Bisson. Sequential extraction procedure for the speciation of particulate trace metals. Analytical Chemistry. 51(1979) 844-851.

DOI: 10.1021/ac50043a017

[7] X.X. Guo, C.Q. Liu, Z.Z. Zhu, Z.L. Wang. J. Li. Evaluation methods for soil heavy metals contamination. Chinese Journal of Ecology. 30(2011)889-896. (in Chinese).

[8] K.P. Singh, D. Mohan, V.K. Singh, A. Malik. Studies on distribution and fractionation of heavy metals in Gomti river sediments—a tributary of the Ganges. India. Journal of Hydrology. 312(2005)14-27.

DOI: 10.1016/j.jhydrol.2005.01.021

[9] Y. Zhao, L.M. Dong, Y.P. Zhang, X.T. Sun. Speciation analysis and pollution assessment of heavy metals in road dust, soil and plants in Beijing. Environmental Science & Technology. 36(2013)169-174. (in Chinese).

[10] K. Nemati, N.K.A. Bakar, M.R. Abas, E. Sobhanzadeh. Speciation of heavy metals by modified BCR sequential extraction procedure in different depths of sediments from Sungai Buloh, Selangor, Malaysia. Journal of Hazardous Materials, 192(2011).

DOI: 10.1016/j.jhazmat.2011.05.039

[11] J.S. Chen, L. Dong, B.S. Deng, L.B. Wan, M. Wang, Z.L. Xiong. Modeling study on copper partitioning in sediments—a case study of Poyang Lake. Acta Scientiae Circumstantiae, 7(1987)140-149.

[12] P.L. Jing, F.M. Fang, J.Q. Zhang, Z.W. Deng, Y.S. Lin. Speciation distribution characteristics of heavy metals in reclamation area of coal mine and its pollution assessment in Huainan. Journal of Soil and Water Conservation, 27(2013).

[13] China Environmental Monitoring Station. Elements of Chinese soil background values. China Environmental Science Press, Beijing, 1990, p.366. (in Chinese).

[14] Y.S. Li, W.H. Wu, P.G. Li, L.F. Fan. Analysis and evaluation of heavy metal pollution in the territory of Zhangjiajie City. Environmental Monitoring in China, 25(2009) 107-111. (in Chinese).

[15] J.D. Chen, Q.G. Dai, X.H. Xu, X.C. Zhong, B.W. Guo. Heavy metal contents and evaluation of farmland soil and wheat in typical area of Jiangsu Province. Acta Ecologica Sinica. 32(2012) 3487-3496. (in Chinese).

DOI: 10.5846/stxb201105080598

[16] M.Y. Wang, L. Zhang, Y.W. Qin, F.S. Li, J. Jing. Speciation of heavy metals in sediments from Xiang River and analysis of their environmental factors. Acta Scientiae Circumstantiae. 31(2011) 2447-2458. (in Chinese).

[17] C.M. Han, L.S. Wang, Z.L. Gong, H.X. Xu. Chemical forms of heavy metals and there environmental significance. Chinese Journal of Ecology. 24(2005)1499-1502. (in Chinese).

[18] G.W. Brümmer, J. Gerth, U. Herms. Heavy metal species, mobility and availability in soils. Zeitschrift für Pflanzenernährung und Bodenkunde, 149(2007) 382-398.

DOI: 10.1002/jpln.19861490404

[19] M. Lei, B.H. Liao, P.F. Qin. Bioavailability Evaluation for Chemical form of heavy metals in soil. Ecology and Environment, 16(2007)1551-1556. (in Chinese).

[20] G.M. Su, G.R. Hu, P.P. Mao, R.L. Yu. Release characteristics of heavy metals in the traffic-air topsoil leached by simulated acid rain. Earth and Environment. 41(2013)512-517. (in Chinese).

[21] R.R. Rodriguez, N.T. Basta, S.W. Casteel, F.P. Armstrong, D.C. Ward. Chemical extraction methods to assess bioavailable arsenic in soil and solid media. Journal of Environmental Quality. 32(2003)876-884.

DOI: 10.2134/jeq2003.8760

[22] R.Y. Li, H. Yang, Z.G. Zhou, J.J. Lü, X.H. Shao, F. Jin. Fractionation of heavy metals in sediments from Dianchi Lake, China. Pedosphere. 17(2007)265-272.

DOI: 10.1016/s1002-0160(07)60033-2