Table 3.

Central Tendency Mercury Values of Environmental Samples Collected near E-Waste Sites.

Exposure Group		Central Tendency Value
1	sample media category	unit	total samples	geometric mean	median	mean	IQR	minimum	maximum	SD
	soil and sediment	mg/kg	707	1.86	0.80	204.04	2.87	0.02	6402.00	969.52
	water	mg/kg	45	0.00	0.00	0.10	0.00	0.00	0.49	0.22
	dust	mg/kg	66	2.44	2.54	8.48	4.33	0.10	37.60	14.44
	food or animals	mg/kg	198	0.12	0.08	1.55	0.18	0.00	20.80	4.59
	air	μg/m3	774	1.29	4.70	5.87	7.23	0.01	21.70	6.49
	plants	mg/kg	194	0.00	0.00	0.01	0.01	0.00	0.02	0.01
	other	mg/kg	6	7	N.A.	7	N.A.	N.A.	N.A.	N.A.
2	soil and sediment	mg/kg	385	0.22	0.30	0.98	0.54	0.00	9.91	1.94
	dust	mg/kg	27	2.20	2.26	26.75	6.26	0.15	148.00	59.47
	food or animals	mg/kg	13	0.15	0.11	0.23	0.23	0.06	0.52	0.25
	air	μg/m3	1	0.035	N.A.	0.04	N.A.	N.A.	N.A.	N.A.
	plants	mg/kg	14	0.00017	N.A.	0.00	N.A.	N.A.	N.A.	N.A.
3	soil and sediment	mg/kg	26	0.05	0.04	0.07	0.07	0.03	0.16	0.07
	food or animals	mg/kg	10	0.17	0.19	0.19	0.09	0.10	0.28	0.13
	air	μg/m3	6	0.00	0.00	0.00	0.00	0.00	0.00	0.00
4	soil and sediment	mg/kg	58	0.10	0.10	5.71	0.21	0.00	78.10	20.84
	water	mg/kg	8	0.04	0.05	0.05	0.03	0.03	0.08	0.04
	dust	mg/kg	4	0.05	N.A.	0.05	N.A.	N.A.	N.A.	N.A.
	food or animals	mg/kg	78	0.04	0.02	3.17	0.01	0.01	28.40	9.46
	air	μg/m3	114	0.03	0.04	0.05	0.03	0.01	0.12	0.05
	plants	mg/kg	38	0.00	0.00	0.00	0.00	0.00	0.01	0.00