The Potential of Wetlands as Treatment Systems for Organic Matter and Some Selected Metals (As, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Pb, and Zn): Case Study of Yitamot Wetland, Ethiopia

Table 2

Concentration of metals in sediment of Yitamot wetland (mg/kg).

Metal	Metal concentration in sampling sites (mg/kg)
	S1	S2	S3	S4	S5
K	123.56	147.21	76.74	25.18	38.27
Na	100.99	103.60	58.20	29.15	73.82
Ca	59.02	69.34	55.86	24.81	57.53
Mg	75.71	40.44	64.50	45.91	28.43
Fe	4165.56	4145.12	3738.13	3233.24	5076.79
Mn	75.73	58.80	28.87	16.20	70.98
Cu	6.03	6.50	6.90	6.45	5.46
Zn	18.80	22.85	17.51	10.92	16.02
Pb	0.35	0.21	0.32	0.38	0.87
Cr	28.64	28.20	16.73	12.84	12.47
Cd	0.07	0.07	0.07	0.04	0.05
As	0.75	1.11	0.94	1.53	nd

nd = not detected; SE = standard error of mean.