Table 2.
Extraction for fluoride concentration of ground drinking waters in Ethiopian rift valley
| Author Ref | [F−] in ground water (mg/l) | Daily Water Consumption (L/d) | F− intake (mg/kg bw/day) | ||||
|---|---|---|---|---|---|---|---|
| Sample | Range | Mean + SD | Range | Mean + SD | Range | Mean + SD | |
| T. Rango et al. [12], 2014 | 94 | 1.1–18 | 8.5 ± 4.1 | 0.33–2.7 | 1.2 ± 0.4 | 0.19–0.37 | 0.23 ± 0.2 |
| T. Rango et al. [7], 2012 | 112 | 7.8–18 | 10 ± 40 | 0.5–3.0 | 1.2 + 0.34 | 0.15–0.60 | 0.36+ 0.18 |
| T. Rango et al. [11], 2017 | 27 | 0.6–15 | 6.5 + 4.2 | 0.3–5.0 | 1.5+ 0.7 | 0.005–0.94 | 0.2 ± 0.16 |
| Wondwossen F., et al. [14], 2004 | 30 | 0.3–14 | 6.6 + 3.13 | – | – | – | – |
| Tekle-Haimanot R,. et.al [20], 2005 | 26 | 1.5–36 | 10.0 + 7.8 | – | – | – | – |
| Tenalem Ayenew [22], 2008 | 51 | 0.1–75 | 4.94 + 1.16 | – | – | – | – |
| Christopher J. et.al [23], 2018 | 47 | 4.8–5.2 | 5.0+ 3.45 | – | – | – | – |
| Muhammed Haji,et al. [18], 2018 | 29 | 0.5–5.6 | 2.5 + 1.29 | – | – | – | – |
| Tesfaw A, Feleke Z [10], 2011 | 16 | 3.2–4.19 | 4.16 + 2.31 | 0.25–3.21 | 1.6 + 0.17 | 0.25–0.31 | 0.28+ 0.03 |
| Redda, Gebeyehu H [24], 2014 | 22 | 2.2–18.5 | 9.2 + 4.90 | – | – | – | – |
| Aweke K.,et al. [19], 2016 | 60 | 2.6–6.5 | 4.6+ 1.90 | – | – | – | – |