Heavy metals | As | Hg | Pb | Cr | Ni |
---|---|---|---|---|---|
In this study (n = 140) | |||||
North | 0.18 ± 0.058 | NA | 0.65 ± 0.25 | 4. 58 ± 6.11 | 1.49 ± 0.88 |
South | 0.17 ± 0.042 | NA | 0.65 ± 0.99 | 5.41 ± 3.91 | 0.77 ± 0.46 |
East | 0.17 ± 0.060 | NA | 0.52 ± 0.12 | 5.84 ± 8.61 | 0.83 ± 0.67 |
West | 0.23 ± 0.08 | 0.03 ± 0.08 | 0.67 ± 0.32 | 3.98 ± 2.72 | 3.59 ± 4.31 |
Center | 0.17 ± 0.045 | 0.04 ± 0.02 | 0.60 ± 0.12 | 4.91 ± 6.33 | 1.79 ± 0.915 |
Other cities | |||||
Ahvaz* [1] | 5.80 ± 1.63 | 2.8 ± 0.3 | 21.1 ± 4.4 | 5.3 ± 3.6 | – |
Tehran** [2] | 2.3 ± 0.76 | 0.52 ± 0.03 | 4.5 ± 0.49 | – | – |
Other countries | |||||
Australia [3] | 0.64 ± 0.1 | – | 5.21 ± 1.43 | 4.43 ± 1.21 | 7.93 ± 2.4 |
China [4] | – | 0.07 ± 0.25 | 5.06 ± 1.73 | 2.84 ± 0.76 | – |
1.06 ± 1.74 | 0.10 ± 0.13 | 16.7 ± 18.5 | 0.58 ± 0.52 | 6.13 ± 4.38 | |
India [7] | 32 ± 5.6 | 0.76 ± 0.32 | 46.2 ± 12.56 | 28.3 ± 4.9 | 34.6 ± 14.17 |
Malaysia [8] | 2.51 ± 0.65 | 0.11 ± 0.0.6 | 5.18 ± 1.04 | 2.19 ± 0.93 | 5.63 ± 1.67 |
Standards | |||||
WHO [9] | 10 | 6 | 10 | 50 | 70 |
EPA [6] | 10 | 2 | 15 | 100 | 20 |
Local standard in Irana [10] | 10 | 6 | 10 | 50 | 70 |