Acknowledgments
The authors wish to thank the Higher Education Commission
(HEC Project# PM-IPFP/HRD/HEC/2012/3599) for financial support,
and the IUE, CAS, China for their support during sample analysis.
Appendix A. Supplementary material
Supplementary data associated with this article can be found, in
the online version, at http://dx.doi.org/10.1016/j.chemosphere.
2015.03.004.