Impact of dumpsite compost on heavy metal accumulation in some cultivated plants

BMC Research Notes

Table 2 The calculated p-values for each heavy metal absorbed by maize and spinach

Concentration (mg/kg)/Trace metals	Cd	Cr	Cu	Mn	Ni	Fe	Pb	Zn
Total in soil	6.40 ± 0.03	110.31 ± 0.95	22.72 ± 0.33	113.98 ± 2.16	19.55 ± 0.31	2090.13 ± 20.52	30.29 ± 0.32	382.49 ± 3.27
Absorbed by maize	0.52 ± 0.01	63.14 ± 0.44	5.71 ± 0.28	72.52 ± 1.8	7.99 ± 0.2	1258.03 ± 10.95	6.22 ± 0.23	217.57 ± 0.21
TF	0.08	0.57	0.25	0.63	0.40	0.60	0.20	0.56
Absorbed by spinach	0.46 ± 0.01	56.02 ± 0.55	4.03 ± 0.16	63.45 ± 1.47	7.48 ± 0.22	1179.53 ± 8.32	4.19 ± 0.20	202.04 ± 1.57
TF	0.072	0.53	0.17	0.55	0.38	0.56	0.13	0.52
(Directive 2014/118/EU) limit	1.50	100.00	140.00	420.00	70.00	NL	100.00	300.00
p-Value	0.0030	< 0.0010	< 0.0010	0.0020	0.0380	< 0.0010	< 0.0010	< 0.0010
Significant difference	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes

TF = Transfer factor. TF < 1: Indicates that the plant does not accumulate the metal efficiently from the soil. TF = 1: Suggests that the plant accumulates the metal at the same rate as it is available in the soil. TF > 1: Implies the plant has a high capacity to absorb the metal from the soil, which could pose health risks if these plants are consumed

ISSN: 1756-0500