Table 2 Statistical characteristics of water chemistry composition in typical dike areas of the Chaohu river basin during different water seasons.
From: Hydrochemical characteristics and controlling factors of polder area in Chaohu Lake Basin, China
The season | Subject | pH | EC | TDS | TH | K+ | Na+ | Ca2+ | Mg2+ | HCO3- | NO3- | Cl- | SO42- | Reference |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
µs/cm | mg/L | mg/L | mg/L | mg/L | mg/L | mg/L | mg/L | mg/L | mg/L | mg/L | ||||
Wet season | Average | 7.65 | 470.26 | 329.30 | 225.55 | 5.53 | 29.30 | 72.78 | 10.64 | 129.73 | 3.56 | 31.93 | 48.57 | This study |
Max | 8.49 | 1200.00 | 928.35 | 675.60 | 9.79 | 75.79 | 212.99 | 34.91 | 463.55 | 15.81 | 104.42 | 141.19 | ||
Min | 7.02 | 157.80 | 93.66 | 55.72 | 3.84 | 5.50 | 15.75 | 3.98 | 40.87 | 0.69 | 10.00 | 11.71 | ||
CV(%) | 4.91 | 50.11 | 54.83 | 390.17 | 30.17 | 55.45 | 60.11 | 58.30 | 63.87 | 103.72 | 65.05 | 73.94 | ||
Normal-flow period | Average | 7.73 | 576.48 | 611.96 | 186.75 | 9.44 | 54.83 | 51.17 | 14.32 | 122.90 | 7.07 | 87.98 | 55.54 | This study |
Max | 8.38 | 1474.00 | 1227.00 | 407.82 | 14.83 | 192.05 | 91.09 | 43.80 | 339.04 | 19.56 | 305.63 | 146.94 | ||
Min | 7.30 | 142.00 | 120 | 59.40 | 3.41 | 5.75 | 16.03 | 4.70 | 42.56 | 0.016 | 10.37 | 9.16 | ||
CV(%) | 3.92 | 45.54 | 49.59 | 295.46 | 27.29 | 67.99 | 30.25 | 53.41 | 47.89 | 102.56 | 67.68 | 58.79 | ||
Dry season | Average | 7.81 | 552.86 | 416.57 | 238.20 | 9.89 | 76.95 | 75.03 | 12.68 | 119.46 | 1.35 | 98.20 | 75.80 | This study |
Max | 8.55 | 1189.00 | 805.00 | 372.95 | 14.78 | 212.67 | 132.82 | 26.80 | 239.48 | 5.19 | 304.11 | 304.11 | ||
Min | 7.12 | 167.00 | 188.00 | 122.42 | 4.87 | 14.09 | 37.82 | 6.58 | 74.20 | 0.00 | 26.42 | 12.71 | ||
CV (%) | 4.51 | 41.12 | 34.47 | 24.62 | 27.3 | 58.79 | 28.30 | 39.79 | 35.04 | 97.31 | 60.49 | 74.77 | ||
Average | 7.73 | 533.20 | 452.61 | 261.83 | 8.29 | 53.69 | 66.33 | 12.55 | 124.03 | 3.99 | 72.70 | 59.97 | This study | |
Chaohu Lake | Average | 9.84 | 255.00 | 101.20 | 30.03 | 5.25 | 17.12 | 3.73 | 5.03 | 9.30 | 13.8 | 36.16 | 16.27 | (Zheng, 2023) |
River | Average | 9.14 | 153.67 | 102.00 | 34.14 | 5.10 | 13.72 | 3.71 | 6.04 | 14.62 | 21.35 | 30.59 | 14.18 | (Zheng, 2023) |
