1. Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005 UP, India
2. Water Analysis Laboratory, Drug and Chemical Toxicology, CSIR−Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow-226001 UP, India
3. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002 UP, India
4. Department of Physics (MMV) Banaras Hindu University, Varanasi-221005 UP, India