Erratum to: Environ Sci Pollut Res

DOI 10.1007/s11356-016-7076-4

Due to an unfortunate misunderstanding, the contribution of Bilha Saina Chepchirchir to our study had erroneously been addressed only through an acknowledgement, and without mentioning the support for the field work in Kenya by the respective National Environmental Management Authority (NEMA). We apologize for these issues, and are happy about the opportunity to use this paper for adding her name as co-author because of her important input to this paper, and to update the acknowledgment accordingly.

The correct author list and acknowledgements are shown in this paper.

Acknowledgments

Doctoral research scholarships from the Higher Education Commission (HEC), Pakistan, and the Ministry of Higher Education Science and Technology (MOHEST), Kenya, in cooperation with the German Academic Exchange Service (DAAD) for U.S. and B.S.C. are gratefully acknowledged. Moreover, we thank the National Environmental Management Authority (NEMA), Kenya, for fieldwork support, and Uwe Schröter and Stefan Kunz for technical support in the lab. Finally, we are thankful to participants of the 15th EuCheMS International Conference on Chemistry and the Environment (Leipzig, Germany) for valuable comments in response to an initial poster presentation.