1. Cadmium���An environment toxicant, New letter, Central Pollution Control Board, 2007. Available at http://www.cpcb.nic.in/News%20Letters/Latest/cadmium/contentCADMIUM.html (Accessed on 1.9. 2007).
2. Chemical properties of cadmium���Health effects of cadmium���Environmental effects of cadmium, 2007. Available at http://www.lenntech.com/periodic-chart-elements/cd-en.htm (Accessed on 1.9.2007).
3. IS 10500 1992. Drinking water specification (Reaffirmed 1993). Available at http://www.hppcb.nic.in/EIAsorang/Spec.pdf (Accessed on 8.9.2007).
4. Chakravarti, A.K.,Chwodhury, S.B.,Chakraborty, S.,Chakraborty, T., & Mukherjee, D.C.( 1995). Liquid membrane multiple emulsion process of chromium (VI) separation from wastewaters, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 103, 59���71.