Identification of Mine Water Source Based on AHP-Entropy and Set Pair Analysis

Table 2

Limits of six indexes.

Water source type	Index
Shanxi Formation sandstone aquifer	K^++Na^+	1479.68	1662.08	2026.88	2209.28
	Ca^2+	24.83	62.29	137.21	174.66
	Mg^2+	5.74	23.04	57.65	74.95
	SO4^2-	2439.16	3092.57	4399.39	5052.79
	Cl^-	61.15	125.85	255.25	319.95
	HCO3^-	220.27	289.45	427.81	497.00
Taiyuan Formation limestone aquifer	K^++Na^+	706.51	756.47	856.37	906.32
	Ca^2+	231.38	309.55	465.90	544.07
	Mg^2+	123.43	131.67	148.16	156.40
	SO4^2-	2280.57	2427.19	2720.43	2867.05
	Cl^-	238.30	257.90	297.11	316.71
	HCO3^-	196.68	209.94	236.46	249.72
Ordovician limestone aquifer	K^++Na^+	392.21	427.21	497.22	532.22
	Ca^2+	413.88	471.30	586.15	643.58
	Mg^2+	124.78	128.27	135.25	138.74
	SO4^2-	2066.11	2134.70	2271.86	2340.44
	Cl^-	286.12	290.69	299.84	304.41
	HCO3^-	210.88	222.50	245.73	257.34