Groundwater Geochemistry. Группа авторов

move, stiff gate, and overgrowth of hoof followed by progress of cracks and irregularities in horn development. Food or water are common exposure pathways of selenium in human beings. Typical symptoms of selenium toxicity in humans are hair and finger‐ and toenail loss, continuous worsening of health, queasiness, headache, tooth deterioration, tint of teeth, and nails with fragility and longitudinal strips (CGWB 2014).

      Table 1.1 Geogenic contaminants in different parts of the country (India).

Study area	As	F	SO4	Na	Cl	Se	Cr	Mn	Fe	References
Cuttack City, Odisha, India									0.03–1.5 ppm	Achary (2014a)
Bhuvaneshwar City, Odisha, India									0.32–7.7 ppm	Achary (2014a)
Gangetic Plain, Jharkhand, India	1–133 ppb in premonsoon, 2–98 ppb in monsoon and 7–115 ppb in postmonsoon									Alam et al. (2016)
Punjab, India	4–688 ppb	0–10.09 ppm				0.2–69.5 ppb				Aulakh et al. (2009)
Tripura, India	0.025 ppm		58.53 ppm					2.68 ppm	14.67 ppm	Banerjee et al. (2011)
Golaghat District, Assam, India	0.074–0.128 ppm							0.02–2.5 ppm	3.5–5.9 ppm	Chetia et al. (2011)
Kanpur, India	Not detected						0.02–0.04 ppm			Dotaniya et al. (2017)
Northeast Rajasthan, India	0.62–1.60 ppb						2.04–3.48 ppm	0.004–0.072 ppm	0.045–0.151 ppm	Duggal et al. (2017)
Uranium Mining Site, Jharkhand, India								0.01–1.3 ppm	0.06–5.3 ppm	Giri et al. (2010)
Northern Maharashtra, India								0.026–0.361 ppm	0–0.096 ppm	Golekar et al. (2013)
Jhajjar district, Haryana, India		1.1 ppm			214.2 ppm					Gupta and Misra (2018)
Sehore District, Madhya Pradesh, India							0–27 ppb	0–121 ppb	0–3330 ppb	Jinwal et al. (2009)
Himanchal Pradesh, India	2.25–117.5 ppb						1–322.58 ppm	0.02–0.041 ppm	0.12–0.60 ppm	Kashyap et al. (2018)
Medak District, Andhra Pradesh, India	2.9–1257 ppb						2.2–74.7 ppb	2.9–14 971 ppb	38.8–576	Krishna et al. (2009)
Upper Gangetic basin, India	1–36 ppb							0.0011–0.415