et al. (2019)
|
Ghaziabad, India
|
0.04–0.54 mg/L
|
|
|
9.20–3887 ppm
|
|
|
4.51–7.09 ppm
|
0.0–0.350 ppm
|
BDL (below detection limit)
|
Kumari et al. (2014)
|
|
Bist‐Doab region of Punjab, northwest India,
|
|
|
|
|
|
10–40 ppb
|
|
|
|
Lapworth et al. (2017)
|
|
East Bokaro Coalfield, Jharkhand, India
|
0.01–4.0 ppb
|
|
|
|
|
|
2.5–25.6 ppb
|
11.0–397.1 ppb
|
194–1685 ppb
|
Mahato et al. (2016)
|
|
Krishnagiri district Tamilnadu, India
|
|
0.5–5.45 ppm
|
10.76 ppm
|
31.4–220.6 ppm
|
49.59–292.7 ppm
|
|
|
|
|
Manikandan et al. (2014)
|
|
West Bengal, India
|
0.2–1219 ppb
|
|
|
2.9–64.6 mg/L
|
|
0.2–7 ppb
|
0.1–1.6 ppb
|
25.1–1538 ppb
|
0.06–18.5 ppm
|
Rahman et al. (2015)
|
|
Hakinaka Taluk, India
|
BDL
|
|
|
|
|
|
0.01–0.05 ppm
|
|
0–0.175 ppm
|
Rajappa et al. (2010)
|
|
Sonbhadra District, Uttar Pradesh, India
|
|
0.4–5.6 ppm in the pre‐monsoon, 0.1–6.7 ppm in the post‐monsoon
|
10–190 ppm in premonsoon, 25–195 ppm in postmonsoon
|
55.2 ppm in pre and 62.9 ppm in postmonsoon
|
|
|
|
|
|
Raju et al. (2012)
|
|
Sonbhadra, Uttar Pradesh, India
|
|
0.3–11 ppm
|
|
|
|
|
|
|
|
Raju (2017)
|
|
Telangana State, India
|
|
0.99
|
51.53 ppm
|
117.87 ppm
|
119.27 ppm
|
|
|
|
|
Rao et al. (2018)
|
|
Andhra Pradesh, India
|
0.011 and 0.081 ppm
|
|
|
|
|
0.008–0.084 ppm
|
0.010–0.091 ppm
|
|
|
Reddy et al. (2012)
|
|
North district of Delhi, India
|
0.0003–0.1 ppm
|
0.05–7.14 ppm
|
25–1202 ppm
|
20–2000 ppm
|
11–4433 ppm
|
|
|
|
|
Sarkar and Shekhar (2013)
|
|
Vaishali and Bhagalpur District, Bihar, India
|
20 ppb in Vaishali and 143 ppb in Bhagalpur
|
|
|
|
|
|
|
|
|
Singh et al. (2014)
|
|
Bhalswa landfill, Delhi, India
|
|
|
|
|
|
|
|
0.01–1.90 ppm
|
0.64–6.34 ppm
|
Srivastava and Ramanathan (2008)
|
|
Ballia and Ghazipur, Uttar Pradesh, India
|
43.75–620.75 ppb
|
|
|
|
|
|
|
|
|
Srivastava and Sharma (2013)
|
|
Ranchi city, Jharkhand, India
|
0.0–200 ppb
|
0–2.19 ppm
|
0–268 ppm
|
18.2–303 ppm
|
2–200 ppm
|
0–140 ppb
|
|
0.0–4200 ppb
|
|
Tirkey et al. (2017)
|
|
Parichha, Jhansi, India
|
|
|
|
|
|
|
0.036–0.061 ppm
|
0.013–0.178 ppm
|
0.186–11.98 ppm
|
Verma et al.
|
