Table 2.

Fractions of Zn, Cd, and Cu (%) in studied soils (mean ± SD) and recovery (%)

Sampling site	Zn					Cd					Cu
	F1	F2	F3	F4	Recovery	F1	F2	F3	F4	Recovery	F1	F2	F3	F4	Recovery
1	10.1 ± 7.9	28.3 ± 16.8	20.2 ± 7.6	52.4 ± 15.2	111	41.5 ± 3.3	47.3 ± 2.3	38.8 ± 9.2	12.0 ± 9.7	140	4.6 ± 0.5	23.9 ± 18.3	21.9 ± 18.4	48.0 ± 21.3	112
2	4.3 ± 3.6	17.4 ± 9.2	13.4 ± 10.5	58.1 ± 9.5	93	31.6 ± 8.6	45.1 ± 2.0	57.0 ± 11.8	11.8 ± 2.8	145	2.5 ± 1.4	13.7 ± 7.8	4.7 ± 3.2	59.9 ± 42.6	105
3	6.7 ± 1.3	17.0 ± 8.9	36.6 ± 38.7	45.2 ± 19.9	106	46.8 ± 7.2	48.2 ± 3.9	43.2 ± 18.5	14.2 ± 8.1	152	4.3 ± 2.1	16.9 ± 8.7	36.1 ± 42.4	40.9 ± 40.4	115
4	8.4 ± 4.3	35.4 ± 21.1	16.5 ± 9.4	50.1 ± 12.2	110	37.5 ± 1.6	42.2 ± 4.5	47.8 ± 14.3	21.0 ± 6.7	148	5.9 ± 4.0	11.6 ± 8.1	19.8 ± 19.2	38.0 ± 31.4	94
5	7.2 ± 4.4	23.2 ± 16.5	14.1 ± 7.1	56.3 ± 13.2	101	38.7 ± 5.2	40.1 ± 2.8	50.1 ± 12.5	21.1 ± 10.0	150	8.6 ± 5.9	25.3 ± 23.4	24.5 ± 5.3	57.6 ± 14.4	107
6	15.0 ± 6.0	21.7 ± 17.8	19.5 ± 5.2	42.6 ± 20.8	99	42.2 ± 11.9	33.6 ± 4.2	59.6 ± 10.4	16.8 ± 11.6	152	14.2 ± 2.3	14.1 ± 12.6	46.3 ± 33.1	46.8 ± 28.3	131
7	11.1 ± 5.7	27.6 ± 10.2	26.1 ± 5.4	46.5 ± 11.3	111	32.4 ± 0.3	42.2 ± 4.3	41.2 ± 7.4	26.3 ± 6.8	142	7.6 ± 3.3	22.0 ± 15.8	43.6 ± 5.9	81.6 ± 71.5	108
8	22.0 ± 6.7	25.6 ± 14.8	25.3 ± 9.8	34.9 ± 20.3	108	33.8 ± 2.0	44.3 ± 5.7	44.9 ± 11.8	17.9 ± 11.6	141	9.7 ± 4.7	23.1 ± 11.1	20.4 ± 9.0	81.2 ± 21.8	127
9	30.0 ± 10.0	19.5 ± 10.0	30.4 ± 12.4	26.5 ± 13.5	106	37.8 ± 7.1	64.2 ± 13.6	28.0 ± 20.2	16.8 ± 9.8	147	12.8 ± 2.0	29.9 ± 15.7	30.1 ± 15.1	40.0 ± 5.8	114

F1, acid-soluble and exchangeable fraction; F2, reducible fraction; F3, oxidizable fraction; F4, residual fraction