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. 2018 Jul 26;13(7):e0199082. doi: 10.1371/journal.pone.0199082

Table 4. Percentages of fluoride species in selected fresh and saline groundwater samples (calculated by PHREEQC).

Water type	Fresh groundwater												Saline groundwater
Sample ID	YJ-01		YJ-02		YJ-03		YJ-05		YJ-08		LY2-11		YJ-15		LY2-10		LY2-12		YH02
Species	Molality	Percentage	Molality	Percentage	Molality	Percentage	Molality	Percentage	Molality	Percentage	Molality	Percentage	Molality	Percentage	Molality	Percentage	Molality	Percentage	Molality	Percentage
Total F	5.37E-06		1.69E-05		9.47E-06		3.40E-05		2.05E-05		5.75E-04		5.63E-04		1.92E-04		1.03E-04		6.69E-04
F^-	5.07E-06	94.45	1.66E-05	98.17	8.70E-06	91.85	3.15E-05	92.53	1.93E-05	94.34	5.67E-04	98.66	4.54E-04	80.55	1.57E-04	81.72	8.57E-05	83.17	6.29E-04	94.01
MgF⁺	2.78E-07	5.18	8.01E-08	0.47	7.31E-07	7.72	2.41E-06	7.10	1.08E-06	5.25	4.95E-06	0.86	8.12E-05	14.43	3.06E-05	15.92	1.51E-05	14.70	2.58E-05	3.86
CaF⁺	2.17E-08	0.40	2.18E-07	1.29	3.44E-08	0.36	9.11E-08	0.27	7.24E-08	0.35	2.72E-06	0.47	3.51E-06	0.62	8.09E-07	0.42	8.33E-07	0.81	5.95E-07	0.09
NaF	2.78E-09	0.05	5.89E-09	0.03	6.50E-09	0.07	1.18E-08	0.03	6.52E-09	0.03	2.14E-07	0.04	2.43E-05	4.31	3.87E-06	2.02	1.34E-06	1.30	1.38E-05	2.06
HF	1.51E-10	0.0028	2.19E-10	0.0013	4.71E-10	0.0050	1.26E-09	0.0037	7.50E-10	0.0037	1.83E-09	0.0003	1.65E-08	0.0029	1.13E-08	0.0060	2.51E-10	0.0002	1.87E-09	0.0003
BF(OH)₃^-	9.91E-12	0.0002	5.27E-11	0.0003	2.25E-11	0.0002	1.32E-10	0.0004	2.05E-11	0.0001	3.56E-08	0.0062	7.35E-08	0.0131	1.24E-08	0.0065	1.88E-09	0.0018	7.18E-08	0.0107
F complexed	3.03E-07	5.64	3.04E-07	1.33	7.73E-07	8.16	2.52E-06	7.41	1.16E-06	5.64	7.92E-06	1.38	1.09E-04	19.38	3.53E-05	18.37	1.73E-05	16.81	4.03E-05	6.02