1. Research Scholar, P.G. and Research Dept. of Chemistry, Jamal Mohamed College, Tiruchirappalli, Tamil Nadu 620 020, India (corresponding author).
2. Director, Environmental Research Centre, J.J. College of Engineering and Technology, Tiruchirappalli, Tamil Nadu 620 009, India.
3. Professor, P.G. and Research Dept. of Chemistry, Jamal Mohamed College, Tiruchirappalli, Tamil Nadu 620 020, India.