Abstract
Polycyclic aromatic hydrocarbons (PAHs) were investigated in the surface soils from Dashiwei and Datuo Karst tiankengs, Guangxi Province, South China. Concentrations of total PAHs ranged from 16.93 ng g−1 to 190 ng g−1 with a mean of 58.29 ng g−1. In Dashiwei more PAHs were concentrated than in Datuo (mean 74.42 ng g−1 > 42.15 ng g−1). Dashiwei and Datuo accounted for the majority of all PAHs concentrated in the lower location through increased rates (58% and 37%) from the upper to lower geographical levels, respectively. Dashiwei presented the stronger trapping ability for heavier molecular weights on the tiankeng floor with a concentration increase rate of 167% when compared to that of the lighter molecular weights (which had a concentration increase of rate 6%), which was in contrast to the Datuo with a concentration increase rate of 37% for lighter molecular weights and 31% for heavier molecular weights. In Dashiwei, it was found that the ratio of heavier PAH compound molecular weight resulted in its higher precipitation recording on the tiankeng floor. The differentia between two tiankengs, therefore, are related to their environmental characteristics and the PAHs physiochemical properties. The analytical result from the PAHs indicators suggest that a petrogenic source was dominant in the area studied. Therefore, the karst tiankeng has the potential to act as a geophysical well for PAHs deposition, especially for the heavier molecular weighted PAH.
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Aas E, Beyer J, Jonson G, Reichert W, Andersen O (2001) Evidence of uptake, biotransformation and DNA binding of polyaromatic hydrocarbons in Atlantic cod and corkwing wrasse caught in the vicinity of an aluminium works. Mar Environ Res 52:213–229
Baumard P, Budzinski H, Garrigue P (1998) Polycyclic aromatic hydrocarbons in sediments and mussels of the western Mediterranean Sea. Environ Toxicol Chem 17:765–776
Chen LG, Ran Y, Xing BS (2005) Contents and sources of polycyclic aromatic hydrocarbons and organochlorine pesticides in vegetable soils of Guangzhou, China. Soils 37:265–271
Hu J, Zhang G, Lui CQ (2006) Pilot study of polycyclic aromatic hydrocarbons in surface soils of Guiyang City, People’s Republic of China. Bull Environ Contam Toxicol 76(1):80–89. doi:10.1007/s00128-005-0892-8
Mai BX, Qi SH, Zeng EY, Yang QS, Zhang G, Fu JM (2003) Distribution of polycyclic aromatic hydrocarbons in the coastal region off Macao, China:assessment of input sources and transport pathways using compositional analysis. Environ Sci Technol 37:4855–4863
Oramah IT, Qi SH, Kong XS, Liu HF, Li J, Li J, Wang XQ, Wang YH (2008) Distribution of polycyclic aromatic hydrocarbons in Datuo karst Tiankeng of South China. Environ Geochem Health 30:423–429
Tam NF, Ke L, Wang XH, Wong YS (2001) Contamination of polycyclic aromatic hydrocarbons in surface sediments of mangrove swamps. Environ Pollut 114(2):255–263
Trapido M (1999) Polycyclic aromatic hydrocarbons in Estonian soil: contamination and profiles. Environ Pollut 105(1):67–74
Wilcke W, Amelung W (2000) Persistent organic pollutants in native grassland soils along a climosequence in North America. Soil Sci Soc Am J 64:2140–2148
Wilcke W, Krauss M, Safronov G, Fokin DA, Kaupenjohann M (2005) Polycyclic aromatic hydrocarbons (pahs) in soils of the Moscow region—concentrations, temporal trends, and small-scale distribution. J Environ Qual 34:1581–1590
Yunker Mark B, Macdonald Robie W, Vingarzan R, Mitchell Reginald H, Goyette D, Sylvestre S (2002) PAHs in the Fraser River basin: a critical appraisal of PAH ratios as indicators of PAH source and composition. Org Geochem 33:489–515
Zeng EY, Vista CL (1997) Organic pollutants in the costal environment off San Diego, California. 1. Source identification and assessment by compositional indices of polycyclic aromatic hydrocarbons. Environ Toxicol Chem 16:179–188
Zhu XW, Huang BJ, Zhu DH, Chen WH (2003) Dashiwei Tiankeng Group, Leye, Guangxi discoveries, exploration, definition and research. Guangxi technology, Nanniing, p 56
Acknowledgments
Sincere thanks are due to Drs. Zhang Gan and Li Jun of State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, for their constructive suggestions. The authors wish to thank Mr. Xiangsheng Kong for collecting the samples. Financial supports from the National Natural Science Foundation of China (No. 40173032), Youthful Science Foundation of Guangxi, China (No.0728098) and China Geological Survey (No. Water [2008]02-30-06) are gratefully acknowledged.
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Wang, Y., Qi, S., Chen, J. et al. Concentration, Distribution and Sources of Polyaromatic Hydrocarbons in Soils from the Karst Tiankengs, South China. Bull Environ Contam Toxicol 83, 720–726 (2009). https://doi.org/10.1007/s00128-009-9801-x
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DOI: https://doi.org/10.1007/s00128-009-9801-x