Journal of Chemistry / 2020 / Article / Tab 2

Research Article

Concentrating Mill Wastes are the Source of Pollution of Human Environment and Natural Ecosystems with Heavy Metals: A Case Study in Primorsky Krai, Russian Federation

Table 2

The chemical composition of the water in the tailings ponds of KCM.

ComponentsMaximum permissible concentration [56]Toxicity-dependant hazard class [56]Content, mg/dm3
“New” tailings“Old” tailingRudnaya river, (background)Rudnaya river, point of the dischargeRudnaya river, below the discharge
Pond 1Pond 2

Mineralization1000.0154.212807.36844.646.61340.6168.0
pH6.5–8.57.42.52.36.94.66.7
HCO31000.029.3<0,06<0,0418.38.023.2
SO4100.078.49364.05250.012.9933.9101.7
Cl300.04e<0.5<0.5<0.5<0.5<0.5<0.5
Ca180.04e31.8544.0408.18.7277.126.9
Mg40.047.5216.0248.51.5105.49.1
Na120.04e3.44.93.34.313.75.2
К50.04e1.6<0.01<0.010.45.60.8
Si5.148.635.29.98.75.9
Fetotal0.141.82677.0934.50.054.40.7
Oil products0.0530.05<0.05<0.05N/D<0.05N/D
Pb0.00620.00040.0030.0090.00040.010.01
Zn0.0130.4111.694.40.0063.32.1
Cu0.00130.0010.30.20.00040.010.004
Mn0.0141.7527.543.40.0088.30.98
Al0.0440.0382.246.80.036.50.5
Cd0.00520.0010.040.040.000020.010.004
As0.0530.0060.20.050.0010.0040.001
Crtotal0.0230.000030.010.0070.00020.0020.0001
Со0.0130.0020.020.02N/D0.02N/D
Be0.000320.000020.0020.002N/D0.002N/D
B0.54<0.01<0.01<0.010.010.020.01
Sr0.430.31.21.30.062.10.3
Li0.0840.0060.020.030.0030.060.01
Ni0.013<LD0.050.060.00010.060.002
Se0.00220.00006<LD0.00040.00020.010.0003
Rb0.140.0010.00030.0004N/D0.003N/D
Cs1.040.00010.00030.00070.00050.00030.001
V0.00130.000020.0030.0001N/D0.0002N/D
Ba0.7440.051.70.00040.0060.020.01

–, no data; N/D, not detected; <LD, below the level of detection; components exceeding the MPC are in italics.

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