[Retracted] Chemical Speciation and Potential Mobility of Heavy Metals in the Soil of Former Tin Mining Catchment

Table 3

Heavy metals speciation in the soil.

S/N	Sample ID	Pb	Cu	Cr	Zn	As	Sn
Fraction 1: Exchangeable mg/kg (ppm)
1	S1	03.45	02.99	03.46	02.56	01.23	12.34
2	S2	05.67	04.37	02.91	01.98	00.92	11.87
3	S3	04.34	03.76	04.23	03.67	02.11	14.17
4	S4	06.88	05.23	02.40	02.59	01.74	15.88
5	S5	03.24	04.65	03.21	03.99	00.86	12.23
	Mean	04.71	04.20	03.22	02.95	01.37	13.29
	%age	09.34%	06.44%	07.98%	09.55%	11.53%	14.64%
Fraction 2: Bound to carbonates mg/kg (ppm)
1	S1	08.29	11.29	08.97	06.87	02.87	25.98
2	S2	11.34	08.34	09.37	05.49	03.29	28.56
3	S3	09.88	07.35	10.10	09.30	04.21	30.25
4	S4	07.78	08.34	06.56	05.34	02.39	28.99
5	S5	10.84	09.23	09.23	06.53	02.65	25.40
	Mean	09.62	08.91	08.64	06.70	03.06	27.83
	%age	18.34%	15.44%	17.98%	19.51%	27.53%	33.64%
Fraction 3: Bound to oxides mg/kg (ppm)
1	S1	16.23	15.88	10.00	10.76	04.21	53.23
2	S2	18.29	19.24	14.21	12.34	05.53	59.65
3	S3	12.87	17.30	15.99	13.21	03.92	61.23
4	S4	19.02	11.02	16.37	10.98	05.67	58.34
5	S5	17.25	14.83	12.31	15.23	09.34	50.85
	Mean	16.73	15.65	13.77	12.50	05.73	56.61
	%age	23.76%	26.19%	24.15%	23.98%	28.21%	42.12%
Fraction 4: Bound to organics mg/kg (ppm)
1	S1	32.14	23.56	18.91	25.88	06.72	79.34
2	S2	29.39	27.91	16.28	28.76	09.36	80.05
3	S3	24.26	30.20	23.22	34.75	10.67	68.32
4	S4	30.22	26.87	29.90	30.04	07.49	76.51
5	S5	28.95	31.64	24.24	29.80	06.99	81.49
	Mean	28.99	28.03	22.51	29.84	08.24	77.14
	%age	26.16%	28.91%	30.75%	33.58%	40.53%	52.40%
Fraction 5: Residual or inert mg/kg (ppm)
1	S1	48.21	62.51	32.44	54.38	11.23	102.34
2	S2	52.78	70.46	21.96	78.23	14.24	098.34
3	S3	61.10	49.80	38.75	59.00	10.96	112.87
4	S4	57.91	53.77	50.02	63.22	08.34	118.34
5	S5	43.55	50.24	43.25	49.30	20.34	101.45
	Mean	52.71	57.35	37.24	60.62	13.02	106.66
	%age	57.56%	52.98%	61.45%	63.12%	59.52%	71.29%