1. School of Environmental Studies, Jadavpur University
,
Kolkata
,
India
;
2. Department of Chemistry, Vidyasagar Evening College
,
Kolkata
,
India
;
3. Department of Chemistry, Jadavpur University
,
Kolkata
,
India
;
4. Department of Microbiology, Pondicherry University
,
Puducherry
,
India