Table 2 Observed concentrations of metals (arithmetic mean for Fe, geometric mean for other metals).
From: Urban geochemical changes and pollution with potentially harmful elements in seven Russian cities
City | Year of sampling | The number of samples | Fe, g/kg | Pb, mg/kg | Cu, mg/kg | Zn, mg/kg |
|---|---|---|---|---|---|---|
Chelyabinsk | 2016 | 60 | 28 | 66 | 50 | 338 |
Magnitogorsk | 2017 | 41 | 32 | 37 | 51 | 289 |
Nizhniy Novgorod | 2018 | 40 | 13 | 21 | 33 | 147 |
Nizhniy Tagil | 2016 | 69 | 68 | 73 | 264 | 468 |
Rostov-on-Don | 2018 | 40 | 16 | 32 | 31 | 169 |
Tyumen | 2016 | 42 | 16 | 46 | 30 | 122 |
Ufa | 2017 | 43 | 21 | 42 | 56 | 158 |
