Heavy Metal Residues in Soil and Accumulation in Maize at Long-Term Wastewater Irrigation Area in Tongliao, China

Table 1

The accumulation of heavy metals (mg/kg) in maize roots, stems, leaves, and fruits, the maize TF and BCF values, and the ANOVA results for the heavy metals concentrations at site 1.

	Cr	Pb	Ni	Zn
Root	105.21 ± 21.79^a	5.12 ± 0.75^a	6.56 ± 1.27^a	4.51 ± 0.56^a
Stem	9.29 ± 2.26^bc	1.25 ± 0.26^b	1.61 ± 1.00^b	2.11 ± 0.75^b
Leaves	15.63 ± 4.72^b	3.57 ± 0.49^c	1.40 ± 0.49^b	3.98 ± 1.12^a
Fruit	0.23 ± 0.11^c	0.49 ± 0.07^c	0.18 ± 0.06^c	6.92 ± 0.97^c
TF	0.12	0.43	0.23	0.64
BCF	1.03	0.19	0.25	0.26

Note: means followed by different letters within the same column are significantly different from each other at P < 0.05 according to DMRT.