Table 1.

Geochemical parameters of groundwater samples (n = 13) with variable fluoride concentration in Yuncheng Basin.

Sample	Longitude	Latitude	pH	Well Depth	EC	HCO3−	NO3−	Cl−	Ca2+	Mg2+	SO42-	Na+	K+	F−	TOC	TN	TP	DO
				m	μs/cm	mg/L	mg/L	mg/L	mg/L	mg/L	mg/L	mg/L	mg/L	mg/L	mg/L	mg/L	mg/L	mg/L
QJ01	35.0008°	110.5629°	8.39	40	1029	583.4	37.38	58.49	4.49	8.94	47.23	269.2	0.40	5.23	0.12	37.38	0.05	6.46
QJ02	35.0235°	110.5800°	8.50	60	1154	615.1	18.87	56.72	2.73	9.04	86.02	310.6	0.31	8.07	0.84	18.87	0.24	6.37
QJ03	35.0202°	110.5114°	8.16	65	908	573.6	8.46	30.84	1.92	5.54	51.46	248.0	0.32	6.66	1.18	8.46	0.14	8.64
QJ04	35.0207°	110.5328°	8.43	40	879	574.8	8.28	13.12	1.76	6.22	27.26	244.5	0.24	8.47	1.28	8.28	0.18	6.91
QJ05	34.9962°	110.5313°	8.39	50	1046	673.7	11.99	31.90	8.18	4.96	34.18	282.2	0.32	6.05	2.33	11.99	0.16	4.78
QJ06	35.0188°	110.5087°	8.46	40	885	548.0	28.43	23.75	2.08	5.64	31.1	245.7	0.25	8.89	1.46	28.43	0.16	7.20
QJ07	34.9820°	110.5233°	8.09	40	1170	561.4	58.57	102.8	28.86	19.44	136.3	273.5	0.38	3.05	1.36	58.57	0.06	6.85
QJ08	34.9824°	110.5080°	8.31	50	1209	661.5	7.81	73.74	4.01	10.21	59.14	310.6	0.36	4.45	2.49	7.81	0.07	7.50
QJ09	34.9742°	110.4870°	8.15	40	1888	668.8	53.33	184.3	12.02	37.67	211.2	387.5	0.48	5.12	2.73	53.33	0.18	5.83
QJ10	34.9783°	110.5361°	7.78	45	3280	951.9	16.75	452.0	30.06	82.64	697.0	794.7	0.64	3.51	4.30	16.75	0.02	6.03
QJ11	34.9768°	110.5742°	7.69	35	4440	1128	66.36	651.4	34.07	138.3	757.4	908.1	3.63	4.45	3.19	66.36	0.04	5.49
QJ12	34.9772°	110.5800°	8.00	35	3190	793.3	17.53	505.2	20.04	68.06	685.4	803.0	0.62	5.9	4.38	17.53	0.02	6.76
QJ13	34.9811°	110.5903°	7.81	35	3510	1031	23.73	487.4	32.06	100.9	616.3	771.8	1.29	4.88	3.69	23.73	0.02	7.78

db, below detection limit.