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Table 1 Indicators of water quality of the Nistru and Bic Rivers at their confluence

From: Influence of the interaction of calcium carbonate particles with surfactants on the degree of water pollution in small rivers

Indic./sample Nistru River, upstream to the confluence of the Bic River Bic River, upstream to the confluence of the Nistru River Nistru River, 200 m downstream of the confluence with the Bic River
pH 8.18 7.62 7.71
[NH4 +], mg/L 0.257 51.0 42.3
[NO2 ], mg/L 0.156 0.253 0.242
[NO3 ], mg/L 5.6 0 0
Oxygen, mgO/L 8.71 0 0
CBO5, mgO/L 0.67 97.8 93.4
CCOCr, mgO/L 17.0 150 144