Study of Selected Metals Distribution, Source Apportionment, and Risk Assessment in Suburban Soil, Pakistan

Table 2

Descriptive statistics of pseudototal (, mg/kg) and bioavailable (, %) concentrations of selected metals in summer and winter.

	Variable	Min	Max	Median	Arith. mean	Geo. mean	Har. mean	Skew.	CV (%)
Summer		0.35	6.1	3.7	3.6	3.1	2.3	−0.28	47
		18	44	35	32	31	30	−0.20	23
		33	86	54	54	53	52	0.48	22
		29	421	38	51	41	38	5.4	138
		3993	5429	4887	4863	4851	4839	−0.64	7.0
		212	778	392	435	404	376	0.41	39
		0.99	112	54	57	45	18	0.21	52
		47	1356	251	468	289	183	1.1	96
		70	143	96	98	96	95	0.69	17
Winter		<0.01	5.2	1.6	1.8	1.2	0.52	0.75	71
		18	43	30	31	30	30	0.34	19
		2.5	32	24	23	21	17	−1.3	30
		17	44	27	28	27	26	0.59	21
		2462	4171	3921	3802	3786	3766	−2.5	8.6
		179	561	408	393	378	361	−0.46	26
		2.4	45	16	19	15	10	0.47	67
		62	739	160	225	183	157	2.0	80
		41	91	61	62	60	59	0.47	22
Summer		0.11	70	2.2	5.6	2.3	1.2	4.6	235
		0.39	2.5	1.3	1.3	1.1	1.0	0.32	46
		<0.01	0.83	0.26	0.32	0.20	0.06	0.51	73
		0.03	0.62	0.39	0.37	0.33	0.24	−0.45	37
		<0.01	0.17	0.02	0.03	0.02	0.01	3.4	118
		<0.01	0.04	0.01	0.01	0.01	0.01	1.1	64
		0.03	65	2.5	7.4	1.97	0.38	5.4	330
		0.11	2.9	0.70	0.76	0.62	0.49	2.3	70
		0.05	0.28	0.13	0.15	0.14	0.12	0.47	39
Winter		2.5	79	7.7	25	10	6.4	4.2	205
		0.36	6.7	2.8	2.6	2.3	1.8	0.68	49
		0.02	1.4	0.31	0.46	0.33	0.20	1.2	76
		0.01	0.81	0.26	0.27	0.17	0.07	0.74	77
		<0.01	0.02	0.01	0.01	<0.01	<0.01	0.94	61
		<0.01	0.04	0.01	0.01	<0.01	<0.01	2.4	88
		0.61	23	2.9	4.4	3.0	2.1	2.6	106
		0.29	4.9	1.1	1.3	1.1	0.93	2.5	77
		0.01	0.55	0.09	0.09	0.07	0.04	4.1	103