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BioMed Research International
Volume 2015, Article ID 762832, 10 pages
http://dx.doi.org/10.1155/2015/762832
Research Article

Polycyclic Aromatic Hydrocarbons Concentrations in Drinking Water in Villages along the Huai River in China and Their Association with High Cancer Incidence in Local Population

1Huai’an Center for Disease Control and Prevention, Huai’an, Jiangsu 223001, China
2Jiangsu Provincial Center for Disease Control and Prevention, Jiangsu Road 172, Nanjing 210009, China
3Chinese Research Academy of Environmental Science, Beijing 100012, China

Received 1 July 2015; Revised 1 November 2015; Accepted 4 November 2015

Academic Editor: Sabine Rohrmann

Copyright © 2015 En chun Pan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study aims to evaluate the carcinogenic risk of PAHs in the drinking water of counties along the Huai River in China and study their associations with high cancer incidence in local population. We investigated 20 villages with high cancer incidence rates as the risk group and 20 villages with low rates as the control group. Water samples from each village were collected in the winter and summer seasons to analyze the concentrations of 16 PAHs. The carcinogenic risks of the PAHs were calculated for each village using a health risk assessment approach. Results showed that PAHs concentrations in 27.2% of the water samples were higher than the allowable values in China. However, no significant difference in water PAHs concentrations was observed between the risk and control groups (), and no correlation was found between water PAHs concentrations and cancer incidence in these villages. The average upper bound carcinogenic risks were less than in both groups. In conclusion, PAHs were present in the drinking water of the studied villages, but their carcinogenic risks remained within acceptable limits. PAHs in local drinking water might not be the major environmental cause of the high cancer incidences.