1. The Caspian Sea Basin Research Centre, University of Guilan, Rasht, Iran
2. Department of Chemistry, Faculty of Science, University of Guilan, Rasht, Iran
3. Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, Selangor D.E., Malaysia
4. Department of Civil Engineering, National Defence University of Malaysia, Sungai Besi Camp, Malaysia