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. 2018 Mar 7;15(3):469. doi: 10.3390/ijerph15030469

Table 2.

Water quality parameters associated with Geming lake (LG), Lianhu lake (LL), and Xingqing lake (LX) in Xi’an City, Shaanxi Province, China.

Water Quality Parameters LG LL LX ANOVA
Temperature (°C) 24.1 ± 1.2A 25.3 ± 1.1A 23.6 ± 1.4A NS
pH 9.6 ± 0.8A 9.4 ± 0.9A 8.3 ± 1.2A NS
Dissolved oxygen (mg/L) 10.2 ± 0.02A 8.3 ± 0.01B 9.1 ± 0.04AB *
NO3-N (mg/L) 5.3 ± 0.4A 5.1 ± 0.5A 1.2 ± 0.07B ***
NH4+-N (mg/L) 2.8 ± 0.06A 1.9 ± 0.04B 1.5 ± 0.05B *
Total nitrogen (mg/L) 5.6 ± 0.03C 12.1 ± 0.04A 8.4 ± 0.04B **
Total phosphorus (mg/L) 0.21 ± 0.01A 0.08 ± 0.00B 0.06 ± 0.01B **
CODMn (mg/L) 21.6 ± 2.3B 35.4 ± 2.9A 28.8 ± 1.6AB **
Fe (mg/L) 0.08 ± 0.01A 0.07 ± 0.01B 0.01 ± 0.00C **

Values shown as means and standard deviations (three replicates). Different capital letter represents statistical significance.* p < 0.05, ** p < 0.01 and *** p < 0.001 represent statistical significance using one-way ANOVA. NS represents no statistical significance.