Table 2. Enrichment factors of potentially toxic metal(loid)s in both slag-covered and slag-absent weathering profile in the study area.

Soil profile	Sample number and sampling depth (cm)	As	Cd	Cr	Cu	Hg	Pb	Zn
Slag-covered	Slag	537.51	1460.41	1.03	13.80	1.86	1283.94	357.50
	S1 (0~10)	6.57	18.34	0.56	2.38	0.87	12.24	4.19
	S2 (10~30)	4.29	4.89	0.51	2.37	0.81	4.97	2.89
	S3 (30~50)	2.66	7.87	0.59	2.31	0.53	3.00	3.13
	S4 (50~70)	1.18	2.95	0.46	2.10	0.54	0.81	2.39
	S5 (70~90)	1.48	2.94	0.52	2.23	0.88	0.97	2.07
	S6 (90~110)	2.29	4.09	0.55	2.18	0.84	2.94	2.35
	S7 (110~130)	0.48	8.51	0.48	2.28	0.34	0.64	3.85
	S8 (130~150)	0.74	12.02	0.59	2.03	0.33	1.15	2.97
	S9 (150~170)	0.24	5.29	0.58	2.14	0.28	0.54	1.93
	S10 (170~190)	0.63	2.49	0.61	2.20	0.31	1.17	2.17
	S11 (190~210)	1.86	15.19	0.92	2.22	1.12	1.76	2.17
Slag-absent	S1 (0~10)	3.11	7.72	0.66	2.04	1.17	1.33	2.45
	S2 (10~30)	3.13	2.69	0.61	1.95	1.10	0.99	1.79
	S3 (30~55)	3.11	0.77	0.59	1.96	1.07	0.97	1.66
	S4 (55~80)	3.45	0.68	0.75	1.95	0.69	1.03	1.64
	S5 (80~105)	3.45	0.61	0.61	1.97	0.58	1.01	1.64
	S6 (105~130)	2.47	0.56	0.61	1.89	0.69	0.98	1.60
	S7 (130~155)	1.73	0.72	0.64	2.00	0.46	0.57	1.55
	S8 (155~180)	0.92	0.92	0.66	2.18	0.31	0.42	1.78
	S9 (180~205)	1.37	1.00	0.64	2.03	0.60	0.69	1.80
	S10 (205~225)	0.18	6.70	0.79	2.48	0.93	1.33	1.41