Table 4 Analysis of natural samples
Sample | Coordinates | Amount of F¯ (mM) |
|---|---|---|
Gadkhali launch ghat (S1) | 22° 10ʹ 4.70ʺ N, 88° 47ʹ 16.30ʺ E | 0.045 |
Jharkhali launch ghat (S2) | 22° 01ʹ 6.20ʺ N, 88° 40ʹ 56.10ʺ E | 0.049 |
Kaikhali launch ghat (S3) | 22° 01ʹ 18.42ʺ N, 88° 37ʹ 3.85ʺ E | 0.06 |
Matla (S4) | 21° 39ʹ 10.84ʺ N, 88° 36ʹ 22.50ʺ E | BDL |
Saptamukhi (S5) | 21° 41ʹ 3.15ʺ N, 88° 21ʹ 6.55ʺ E | BDL |
Farm tubewell (S6) | 23° 40ʹ 36.94ʺ N, 87° 29ʹ 2.56ʺ E | BDL |
School tubewell (S7) | 23° 53ʹ 57.67ʺ N, 87° 23ʹ 3.39ʺ E | BDL |