Affiliation: | 1. School of Earth, Ocean and Environmental Sciences, University of Plymouth , Drake Circus, Plymouth PL4 8AA, UK;2. Department of Chemistry , Ebonyi State University, P.M.B. 053 , Abakaliki, Ebonyi State, Nigeria;3. School of Earth, Ocean and Environmental Sciences, University of Plymouth , Drake Circus, Plymouth PL4 8AA, UK;4. Water Studies Centre , School of Chemistry, Monash University , Victoria 3800, Australia |