Table 3: Heavy metals speciation in the soil.

S/NSample IDPbCuCrZnAsSn

Fraction 1: Exchangeable mg/kg (ppm)

1S103.4502.9903.4602.5601.2312.34
2S205.6704.3702.9101.9800.9211.87
3S304.3403.7604.2303.6702.1114.17
4S406.8805.2302.4002.5901.7415.88
5S503.2404.6503.2103.9900.8612.23
Mean04.7104.2003.2202.9501.3713.29
%age09.34%06.44%07.98%09.55%11.53%14.64%

Fraction 2: Bound to carbonates mg/kg (ppm)

1S108.2911.2908.9706.8702.8725.98
2S211.3408.3409.3705.4903.2928.56
3S309.8807.3510.1009.3004.2130.25
4S407.7808.3406.5605.3402.3928.99
5S510.8409.2309.2306.5302.6525.40
Mean09.6208.9108.6406.7003.0627.83
%age18.34%15.44%17.98%19.51%27.53%33.64%

Fraction 3: Bound to oxides mg/kg (ppm)

1S116.2315.8810.0010.7604.2153.23
2S218.2919.2414.2112.3405.5359.65
3S312.8717.3015.9913.2103.9261.23
4S419.0211.0216.3710.9805.6758.34
5S517.2514.8312.3115.2309.3450.85
Mean16.7315.6513.7712.5005.7356.61
%age23.76%26.19%24.15%23.98%28.21%42.12%

Fraction 4: Bound to organics mg/kg (ppm)

1S132.1423.5618.9125.8806.7279.34
2S229.3927.9116.2828.7609.3680.05
3S324.2630.2023.2234.7510.6768.32
4S430.2226.8729.9030.0407.4976.51
5S528.9531.6424.2429.8006.9981.49
Mean28.9928.0322.5129.8408.2477.14
%age26.16%28.91%30.75%33.58%40.53%52.40%

Fraction 5: Residual or inert mg/kg (ppm)

1S148.2162.5132.4454.3811.23102.34
2S252.7870.4621.9678.2314.24098.34
3S361.1049.8038.7559.0010.96112.87
4S457.9153.7750.0263.2208.34118.34
5S543.5550.2443.2549.3020.34101.45
Mean52.7157.3537.2460.6213.02106.66
%age57.56%52.98%61.45%63.12%59.52%71.29%