Table 3.

Descriptive statistical analysis of heavy metals.

Elements	Min (mg·kg−1)	Max (mg·kg−1)	Mean (mg·kg−1)	Standard Deviation	Coefficient Variation	Skewness	Kurtosis	Background Value
Cd	0.90	6.72	2.46	1.06	0.43	1.70	5.04	0.07
Co	10.90	18.72	14.65	1.91	0.13	0.10	−0.68	17.00
Cr	85.90	219.71	128.13	28.60	0.22	1.19	2.01	68.10
Cu	75.89	523.66	206.94	106.61	0.52	1.25	1.36	23.60
Mo	2.89	38.59	8.45	5.71	0.67	3.44	16.91	4.10
Ni	30.66	95.85	56.68	16.00	0.28	0.84	−0.11	29.00
Pb	40.26	174.39	107.98	28.89	0.27	0.11	0.08	25.40
V	53.38	100.22	78.96	9.84	0.12	−0.37	0.20	79.20
Zn	234.62	982.37	525.17	174.36	0.33	0.56	0.33	102.60