The Research of Nanoparticle and Microparticle Hydroxyapatite Amendment in Multiple Heavy Metals Contaminated Soil Remediation

Table 2

Biomass of pakchoi (Brassica chinensis L.) grown in the uncontaminated soil and contaminated soil with mHAP and nHAP (dry weigh).

Treatment	Shoot (g·pot^−1 DW)	Root (g·pot^−1 DW)
T0 (CK)	3.61±0.26^efg	0.62±0.04^bc
T0 + 1.5% mHAP	3.96±0.28^ij	0.63±0.08^cd
T0 + 3% mHAP	3.64±0.17^fgh
T0 + 1.5% nHAP
T0 + 3% nHAP	3.60±0.31^efg	0.62±0.11^bc
T1 (250/100 mg·kg^−1 Pb/Zn)	3.96±0.25^ij	0.62±0.06^bc
T1 + 1.5% mHAP	4.20±0.10^kl	0.69±0.18^efgh
T1 + 3% mHAP	4.31±0.53^l	0.82±0.09^k
T1 + 1.5% nHAP	4.04±0.16^ij	0.65±0.13^cdef
T1 + 3% nHAP	4.15±0.14^jkl	0.66±0.10^cdef
T2 (500/200 mg·kg^−1 Pb/Zn)	3.23±0.12^bc	0.56±0.11^ab
T2 + 1.5% mHAP	3.39±0.18^cde	0.65±0.07^cdef
T2 + 3% mHAP	3.94±0.27^ij	0.76±0.21^ij
T2 + 1.5% nHAP	3.40±0.43^cde	0.61±0.11^bc
T2 + 3% nHAP	3.59±0.15^efg	0.69±0.15^dgh
T3 (100/25 mg·kg^−1 Cu/Cr)	3.81±0.34^hi	0.66±0.17^cdef
T3 + 1.5% mHAP	4.01±0.18^ijk	0.80±0.09^jk
T3 + 3% mHAP	4.06±0.16^jk	0.82±0.11^k
T3 + 1.5% nHAP	3.97±0.49^ijk	0.74±0.15^hij
T3 + 3% nHAP	4.04±0.59^ijk	0.78±0.08^ijk
T4 (200/50 mg·kg^−1 Cu/Cr)	2.81±0.10^a	0.51±0.12^a
T4 + 1.5% mHAP	3.27±0.25^bc	0.64±0.11^cdef
T4 + 3% mHAP	3.53±0.24^ef	0.71±0.18^gh
T4 + 1.5% nHAP	3.08±0.11^b	0.64±0.06^cdef
T4 + 3% nHAP	3.31±0.19^cd	0.67±0.13^cdef

Mean values denoted by the same letter in a column do not differ significantly according to the Duncan test.