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Table 1

Some physico-chemical characteristics of water

Parameters of waterOctober 2017
August 2018
Sampling point 3Sampling point 13Sampling point 19Sampling point 3Sampling point 13Sampling point 19
Water clarity, m 1.70 1.80 1.70 1.40 1.40 1.50 
Surface water temperature, °C 2.00 2.50 2.30 15.1 15.5 15.5 
рНa, рН units 4.70 ± 0.20 4.70 ± 0.20 4.80 ± 0.20 4.80 ± 0.10 4.80 ± 0.10 4.70 ± 0.10 
Electrical conductivitya, μS cm−1 248 ± 12.0 291 ± 15.0 184 ± 9.20 na na na 
Oil contenta, mg L−1 < 0.05 0.05 ± 0.02 0.07 ± 0.03 0.09 ± 0.04 0.09 ± 0.03 0.09 ± 0.04 
Chloridesa, mg L−1 60.5 ± 7.90 61.5 ± 8.00 60.0 ± 7.80 74.7 ± 6.70 73.8 ± 6.60 73.0 ± 6.60 
BOD5a, mg О2 L−1 0.70 ± 0.10 0.83 ± 0.12 0.86 ± 0.12 2.00 ± 0.30 4.90 ± 0.70 3.00 ± 0.40 
Parameters of waterOctober 2017
August 2018
Sampling point 3Sampling point 13Sampling point 19Sampling point 3Sampling point 13Sampling point 19
Water clarity, m 1.70 1.80 1.70 1.40 1.40 1.50 
Surface water temperature, °C 2.00 2.50 2.30 15.1 15.5 15.5 
рНa, рН units 4.70 ± 0.20 4.70 ± 0.20 4.80 ± 0.20 4.80 ± 0.10 4.80 ± 0.10 4.70 ± 0.10 
Electrical conductivitya, μS cm−1 248 ± 12.0 291 ± 15.0 184 ± 9.20 na na na 
Oil contenta, mg L−1 < 0.05 0.05 ± 0.02 0.07 ± 0.03 0.09 ± 0.04 0.09 ± 0.03 0.09 ± 0.04 
Chloridesa, mg L−1 60.5 ± 7.90 61.5 ± 8.00 60.0 ± 7.80 74.7 ± 6.70 73.8 ± 6.60 73.0 ± 6.60 
BOD5a, mg О2 L−1 0.70 ± 0.10 0.83 ± 0.12 0.86 ± 0.12 2.00 ± 0.30 4.90 ± 0.70 3.00 ± 0.40 

na, not analyzed.

aSingle measurement result ± error.

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