1. Department of Environmental Sciences, P.S.G. College of Arts and Science, Coimbatore-641014, India
2. Department of Chemistry, Sri Eshwar College of Engineering, Coimbatore-641202, India
3. Department of Chemistry, Bharathiar University, Coimbatore-641046, India
4. Department of Chemistry, L.R.G. Government Arts College for Women, Tirupur-641604, India