Journal of Chemistry / 2020 / Article / Tab 5 / Research Article
Anomalous Fluctuation of Halogens in Relation to the Pollution Status along Lake Mariout, Egypt Table 5 The multiple regression analyses of each halogen as dependent variable and other tested variables in the surface water, pore water, and sediment partitions, besides the precipitated salts in surface water along Lake Mariout.
Dependent variable Multiple regression equation R 2 Fluoride Lake water FW = 31.62 + 0.92 Zn F2 − 0.33 SiP + 0.21 CuI − 0.17 S‰P 0.9911 Pore water Fp = −25.67 − 1.17 SiW − 0.33 LiP − 0.62 CuCl − 0.28 IS + 0.23 TDSW + 0.17 KIO4 − 0.12 BrW − 0.04 porosity + 0.04 PW 1.0000 Sediment FS = 0.88 CAP − 0.49 MgS − 0.46 DOW + 0.39MgW + 0.27 Mn(IO3 )2 + 0.15 Cu3 (PO4 )2 + 0.04 HAP + 0.02 pHP 1.0000 Chloride Lake water No relation 0.0000 Pore water No relation 0.0000 Sediment ClS = −1.16 + 0.46 MgP + 0.77 Kp − 0.49 dolomite + 0.17 TDSW − 0.11 CuI + 0.05 NaS + 0.02 BS + 0.01 FeF2 1.0000 Bromide Lake water BrW = 156.3 + 1.10 CuBr − 0.57 CuCl − 0.21 KS − 0.14 pHP − 0.11 TPS + 0.14 FeW + 0.07 ZnS − 0.02 PP + 0.01 turbidity 1.0000 Pore water BrP = −15.16 − 0.55 FeS − 0.73 BS + 0.61 MnW + 0.83 SiP + 0.49 NaS − 0.31MnS − 0.15 CuBr + 0.11 pHW − 0.01 CaW 1.0000 Sediment BrS = 0.15 SiP + 1.95 CFAP + 0.02 FP − 0.45 IS + 1.92 sand% + 0.37 MnW − 0.29 MgS − 0.12 LiP + 0.05 Ca3 (PO4 )2 − 0.02 ZnF2 1.0000 Iodide Lake water IW = 0.99 Ca(IO3 ).6H2 O 0.9999 Pore water IP = −0.97 ZnF2 − 0.57 Li3 PO4 − 0.53 BP + 0.34 FAP + 0.15 Ca(IO3 )2 + MnW + 0.05 KS − 0.09 turbidity + 0.55 CaS 0.9999 Sediment IS = −0.72 + 1.35 SO4P + 0.23 Mn(IO3 )2 + 0.63 FeW + 0.31 TPS − 0.35 MgP − 0.12 Zn(CO3 )2 .2H2 O 0.9993