1. Chen M, Wang P, Chen Q, Wu J, Chen X. A clustering algorithm for sample data based on environmental pollution characteristics. Atmos Environ. 2015;107:194–203.
2. Pirsaheb M, Khosravi T, Sharafi K, Babajani L, Rezaei M. Measurement of heavy metals concentration in drinking water from source to consumption site in Kermanshah—Iran. World Appl Sci J. 2013;21(3):416–23.
3. Atharizade M, Miranzadeh MB. Evaluation of efficacy of advanced oxidation processes fenton, fenton-like and photo-fenton for removal of phenol from aqueous solutions. J Chem Soc Pak. 2015;37(02):266.
4. Azari A, Kakavandi B, Kalantary R, Ahmadi E, Gholami M, Torkshavand Z, Azizi M. Rapid and efficient magnetically removal of heavy metals by magnetite-activated carbon composite: a statistical design approach. J Porous Mater. 2015;22(4):1083–96.
5. Farzadkia M, Gholami M, Kermani M, Yaghmaeian K. Biosorption of hexavalent chromium from aqueous solutions by chemically modified brown algae of Sargassum sp. and dried activated sludge. Asian J Chem. 2012;24(11):5257.