Organic Matter and Barium Absorption by Plant Species Grown in an Area Polluted with Scrap Metal Residue

Table 1

Chemical composition of the organic materials*.

Source	pH	E.C.	O.C.	C/N	P	K	Ca	Mg	B	Cu	Fe	Mn	Zn
		dS m^−1	g kg^−1		g kg^−1						Mg kg^−1
Sugar cane filter cake	7.5	0.9	263.7	12	10.3	2.3	16.2	3.7	21	60	5900	557	141
Peat	5.5	0.2	163.1	24	0.8	1.4	1.7	1.7	16	45	6300	47	36

E.C.: electrical conductivity; O.C.: organic carbon.
*Total elements concentration obtained by extraction with a mix of nitric and perchloric acids [17], results presented are the average of six replicates.