Erratum to: Environ Monit Assess (March 2015) 187, Issue 3:74

DOI 10.1007/s10661-014-4253-0

The original version of this article unfortunately contained a mistake in the acknowledgement section.

Acknowledgement should be corrected as follows.

This work was supported by Pusan National University Research Grant, 2013 by providing the necessary facilities to the author S. Sivakumar for manuscript preparation.