Elements | Phytoplankton | Total plankton | ||||
Present study (INAA), the Black Sea | The Black Sea [15] | The World Ocean [22] | The White Sea [23] | |||
St 1 | St 2 | St 3 | ||||
Na | 2025 ± 52 | 715 ± 19 | 1095 ± 29 | 33000 | 63000 | |
Mg | 173 ± 6 | 546 ± 19 | 2370 ± 69 | 94000 | ||
Al | <309 | 951 ± 26 | 4421 ± 118 | 62 | ||
S | 50.8 ± 23.5 | 25.4 ± 11.6 | 4.6 ± 3.2 | 8300 | ||
Cl | 2650 ± 233 | 1520 ± 134 | 1520 ± 135 | 4700 | ||
K | 1380 ± 787 | 732 ± 288 | 1810 ± 455 | 52000 | 13000 | |
Ca | <811 | 349 ± 35 | 4379 ± 386 | 14000 | 6000 | |
Sc | <0.03 | 0.33 ± 0.10 | 0.75 ± 0.23 | 0.07 | 0.45 | |
Ti | 15 ± 4 | 64 ± 10 | 291 ± 25 | 45 - 201 | 10 | 400 |
V | 0.20 ± 0.02 | 1.4 ± 0.1 | 6.6 ± 0.3 | 6 - 15 | 3.5 | 3 |
Cr | 5.16 ± 1.15 | 11.86 ± 1.24 | 15.76 ± 1.51 | 30 - 69 | 1.8 | 620 |
Mn | 3.0 ± 0.2 | 6.0 ± 0.4 | 28.4 ± 1.5 | 3 - 63 | 20 | 80 |
Fe | 1370 ± 198 | 1580 ± 173 | 4220 ± 295 | 3310 - 9670 | 160 | 2460 |
Ni | 0.43 ± 0.02 | 0.28 ± 0.02 | 0.81 ± 0.03 | 0.4 | 0.9 | |
Co | 0.6 ± 0.1 | 15.7 ± 1.1 | 15.1 ± 1.2 | 1.4 | 3.5 | |
Cu | 91.4 ± 32.4 | 43.1 ± 15.7 | 117 ± 42 | 38 - 187 | 12 | 43 |
Zn | 205 ± 20 | 86 ± 8 | 124 ± 11 | 39 | 362 | |
As | 0.11 ± 0.01 | 0.59 ± 0.04 | 1.8 ± 0.1 | 15 | 13 | |
Se | 0.26 ± 0.06 | <0.13 | 0.04 ± 0.01 | 0.063 | 0.4 | |
Br | 59.1 ± 7.1 | 28.2 ± 3.4 | 64.7 ± 7.7 | 440 | 2000 | |
Rb | 0.20 ± 0.12 | 2.7 ± 0.5 | 7.4 ± 1.4 | 1.8 | 7 | |
Sr | 6.3 ± 0.8 | 6.8 ± 0.7 | 15.1 ± 1.4 | 1100 | 106 | |
Zr | 7.0 ± 4.7 | 8.0 ± 3.5 | 16.7 ± 6.5 | 0.7 | 3.6 | |
Mo | 0.2 ± 0.07 | 0.19 ± 0.09 | 0.24 ± 0.08 | 0.39 | 0.2 | |
Ag | 0.07 ± 0.01 | 0.07 ± 0.02 | 0.05 ± 0.013 | 0.22 | ||
Sn | 21.3 ± 2.6 | 1.3 ± 0.4 | 1.8 ± 0.5 | 0.29 | 1.2 | |
Sb | 0.74 ± 0.03 | 0.28 ± 0.01 | 0.37 ± 0.04 | 0.16 | 1.8 | |
I | 1.2 ± 0.2 | 2.2 ± 0.4 | 22.0 ± 4.0 | 1020 | 139 | |
Ba | 33.6 ± 8.9 | <9.9 ± 4.5 | 48.7 ± 13.4 | 19 | 28 | |
Cs | 0.012 ± 0.01 | 0.18 ± 0.01 | 0.47 ± 0.02 | 0.072 | 0.6 | |
La | 0.115 ± 0.025 | 0.822 ± 0.055 | 2.1 ± 0.12 | 0.14 | 1.18 | |
Ce | 0.6 ± 0.3 | 1.2 ± 0.5 | 3.7 ± 1.1 | 0.23 | 2.6 | |
Nd | 3.1 ± 1 | 0.5 ± 0.4 | 1.1 ± 1.3 | |||
Sm | 0.6 ± 0.2 | 0.7 ± 0.2 | 0.6 ± 0.2 | |||
Gd | <0.6 | 4.0 ± 1.2 | 1.8 ± 0.6 | |||
Tb | <0.01 | 0.02 ± 0.01 | 0.06 ± 0.02 | 0.022 | ||
Dy | <0.14 | 0.11 ± 0.03 | 0.32 ± 0.11 | |||
Tm | 0.04 ± 0.01 | 0.02 ± 0.01 | 0.16 ± 0.02 | |||
Yb | 0.14 ± 0.07 | 0.11 ± 0.04 | 0.53 ± 0.12 | 0.13 | ||
Hf | <0.02 | 0.19 ± 0.06 | 0.34 ± 0.1 | 0.11 | ||
Ta | 0.002 ± 0.001 | 0.03 ± 0.01 | 0.05 ± 0.02 | 0.06 | ||
W | 0.3 ± 0.1 | 0.2 ± 0.1 | 0.3 ± 0.1 | 0.035 | ||
Au | 0.004 ± 0.001 | 0.002 ± 0.001 | 0.002 ± 0.001 | 0.008 | ||
Th | <0.03 | 0.30 ± 0.01 | 0.70 ± 0.02 | 0.1 | 0.28 | |
U | 2.4 ± 0.2 | 1.9 ± 0.2 | 0.7 ± 0.1 | 0.8 |