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| pH | TOC (mg/L) | TP (mg/L) | |
|---|---|---|---|
| W-CH | 7.27 | 2.702 | 0.21 |
| W-W | 7.89 | 5.969 | 0.15 |
| W-ZH | 8.02 | 3.251 | 0.17 |
W-CH, W-W and W-ZH represent water samples collected from upper Chongqing, middle Wuhan and downstream Zhenjiang reaches of the Yangtze River, respectively.
