Hydrochemical characterization and spatial distribution of fluoride in groundwater of Delhi state, India
DOI:
https://doi.org/10.53550/Keywords:
Delhi, Fluoride, Groundwater, pHAbstract
The Fluoride (F) concentration along with other hydrochemical parameters of Delhi groundwater was analysed to characterize F pollution and its relation with other ions. Groundwater quality varied from fresh to saline with neutral to alkaline pH. The F concentration varied from 0.20-5.12 (0.89±0.89) mg L and the concentration increased from eastern to western part of the study area. Out of total analysed samples, 24.3% contained F level lower than 0.5 mg L , 55.4% from 0.5 to 1.0 mg L , 9.5% from 1.0 to 1.5 mg L and only 10.8% contained >1.5 mg L . The molar ratio of different ions present in the groundwater system has identified the dominant reaction pattern occurring within the system. F was independent on other quality parameters except for pH. Positive correlation between F and pH indicated that alkaline condition improved solubility of F.
References
APHA. 1995. Standard methods for the examination of water and Wastewater, 19 ed. Washington DC: American Public Health Association.
Census.2011. Population census of India: Government of India.
CGWB. 2006. Development and augmentation of groundwater resources in National Capital Territory of Delhi. Government of India Report.
Crosby, N.T., Dennis, A.L. and Stevens, J.G. 1968. An evaluation of some methods for the determination of fluoride in potable waters and other aqueous solutions. Analyst, 93:643-652.
Dhiman, S.D. and Keshari, A.K. 2006. GIS assisted inverse geochemical modeling for plausible phase transfers in aquifers. Environ. Geol.,50:1211 1219.
Jha, S.K., Singh, R.K., Damodaran, T., Mishra, V.K., Sharma, D.K. and Rai, D. 2013. Fluoride in Groundwater: Toxicological Exposure and Remedies. J. Toxicol. Env. Heal. B., 16(1). DOI:10.1080/10937404.2013.769420.
Ramanaiah, S.V., Venkatamohan, S., Rajkumar, B. and Sarma, P.N. 2006.
Monitoring of fluoride concentration in groundwater of Prakasham district in India: correlation with physicochemical parameters. J. Environ. Sci. Eng ., 48:129-134.
Saxena, V.K. and Ahmed, S. 2003. Inferring the chemical parameters for the dissolution of fluoride in groundwater. Environ. Geol., 43:731 736.
Shaji, E., Viju, B.J. and Thambi, D.S. 2007. High fluoride in groundwater of Palghat District, Kerala. Curr. Sci. 92(2): 240 245.
Sreedevi, P.D., Ahmed. S., Made, B., Ladous, E. and Gandolfi, J.M.
2006. Association of hydrogeological factors in temporal variations of fluoride concentration in a crystalline aquifer in India. Environ. Geol., 50:1 11.
Susheela, A.K. 1999. Fluorosis management programme in India. Curr. Sci., 77(10): 1250-1256.
The Hindu. 2005. Delhi's groundwater status goes from bad to worse. Delhi: 22 June 2005.
Tirumalesh, K., Shivanna, K. and Jalihal, A.A. 2007. Isotope hydrochemical approach to understand fluoride release into groundwaters of Ilkal area, Bagalkot District, Karnataka, India. Hydrogeol. J., 15 (3): 589 598. WHO. 2004. . Volume 1
Recommendations. 3 edition,World Health Organization, Geneva.
