Influence of Gliricidia sepium Biochar on Attenuate Perchlorate-Induced Heavy Metal Release in Serpentine Soil

Table 3

Chemical properties, total metal digestion, and bioavailable concentration for Ni and Mn in serpentine soil.

pH	EC (dS )	Total metal concentration (mg k)		Bioavailable metal concentration (mg k)
		Ni	Mn	Ni	Mn
6.26	0.03	6,567	2,609	19.8 (0.30)	6.4 (0.25)

Value in parentheses is the percentage of bioavailable metal concentration compared to the total metal concentrations.