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

Table 4

Concentration of Cu and Cr in pakchoi (Brassica chinensis L.) grown in Cu-Cr multiple metal-contaminated soil in pot culture receiving mHAP and nHAP amendments.

	Cu		Cr
	Shoot; (mg·kg^−1)	Root; (mg·kg^−1)	Shoot; (mg·kg^−1)	Root; (mg·kg^−1)
T0 (CK)	6.32±0.36^a	9.72±0.54^a	1.94±0.08^b	3.54±0.14^a
T0 + 1.5% mHAP	5.90±0.20^a	9.51±0.77^a	1.58±0.06^ab	2.89±0.09^a
T0 + 3% mHAP	4.78±0.29^a	7.68±0.64^a	1.45±0.06^a	2.53±0.07^a
T0 + 1.5% nHAP	5.84±0.41^a	8.60±0.26^a	1.75±0.05^ab	2.96±0.20^a
T0 + 3% nHAP	5.32±0.35^a	7.94±0.81^a	1.51±0.11^ab	2.67±0.18^a
T3	17.16±0.76^f	33.75±1.53^d	4.25±0.20^e	15.25±0.78^e
T3 + 1.5% mHAP	13.20±0.79^cd	23.89±1.44^c	3.07±0.26^d	10.34±0.65^c
T3 + 3% mHAP	10.06±0.42^b	19.61±0.86^b	2.65±0.15^c	9.44±0.53^b
T3 + 1.5% nHAP	14.04±1.38^de	24.19±0.99^c	3.28±0.23^d	13.17±0.10^d
T3 + 3% nHAP	12.14±0.74^c	20.98±1.30^b	2.99±0.17^cd	9.49±0.04^b
T4	30.39±1.90^i	76.00±4.11^h	6.76±0.48^h	34.54±1.87^j
T4 + 1.5% mHAP	20.64±1.36^h	53.22±2.76^g	5.02±0.17^fg	22.66±2.33^h
T4 + 3% mHAP	15.37±0.85^e	39.92±2.53^e	4.13±0.26^e	19.14±0.86^f
T4 + 1.5% nHAP	22.06±1.03^h	54.90±3.53^g	5.30±0.32^g	25.35±1.92^i
T4 + 3% nHAP	18.77±1.12^g	45.88±1.92^f	4.67±0.35^f	21.60±2.90^g

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