Table 3 Exponential curve equations of the dFe and HS concentrations using data obtained from a previous study and our results.
Species | Study Area | Fitted Equation | R-square (R2) | Salinity range | Removal rate | Number of points | Data Sources |
|---|---|---|---|---|---|---|---|
dFe | Ob River estuary | y = 552.73*exp(−0.16 S) + 8.50 | 0.9948 | 1.3–34 | 99% | 7 | ref. 40 |
dFe | Yenisey River estuary | y = 240.99*exp(−0.15 S) + 3.64 | 0.9996 | 0–34 | 99% | 7 | ref. 40 |
dFe | Galveston Bay | y = 418.23*exp(−0.31 S) + 5.40 | 0.9985 | 0–33.9 | 97% | 9 | ref. 47 |
dFe | Millica River estuary | y = 24379.0*exp(0.32 S) + 757.2 | 0.9951 | 0–29 | 99% | 16 | ref. 29 |
dFe | Zaire River estuary | y = 232.84*exp(−0.14 S) + 16.61 | 0.9825 | 0–31 | 97% | 8 | ref. 46 |
HS | San Francisco Bay | y = 7190.3*exp(−0.66 S) + 41.33 | 0.9892 | 4.0–34 | 94% | 5 | ref. 51 |
dFe | Yangtze River estuary | y = 175.28*exp(−0.28 S) + 9.86 | 0.9939 | 0–34 | 96% | 20 | This study |
FA | Yangtze River estuary | y = 2044.5*exp(−0.16 S) + 422.0 | 0.9936 | 0–34 | 79% | 20 | This study |
HA | Yangtze River estuary | y=1503.0*exp(−0.19 S)+305.2 | 0.9950 | 0–34 | 84% | 20 | This study |
