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

Table 2

Variation of pH in serpentine soil with different and BC amendment combinations.

concentration (w/w)	BC amendment rate (w/w)	pH
0.25	0	5.73
	1	5.72
	2.5	5.89
	5	6.09
0.5	0	5.38
	1	5.44
	2.5	5.59
	5	6.02
0.75	0	4.90
	1	5.11
	2.5	5.10
	5	5.43
1	0	4.49
	1	4.63
	2.5	4.85
	5	5.02