Environmental Systems Research

Table 8 Exposure duration, ADD (mg/kg-day) for selected hand-dug well in Ejisu-Juaben Municipality

From: Pollution evaluation, sources and risk assessment of heavy metals in hand-dug wells from Ejisu-Juaben Municipality, Ghana

Code	ADD
Code	Mn	Fe	Cu	Pb	Zn	Cd
1	9.8 × 10⁻⁵	0.0037	0.0001	0.0005	0.0003	2.45 × 10⁻⁵
2	0.0001	2.45 x 10⁻⁵	3.67 × 10⁻⁵	0.0001	–	1.22 × 10⁻⁵
3	0.0002	0.0002	8.57 × 10⁻⁵	0.0001	0.0001	1.22 × 10⁻⁵
4	7.35 × 10⁻⁵	0.0005	7.35 × 10⁻⁵	0.0001	0.0001	0
5	0.0002	0.0008	8.57 × 10⁻⁵	–	0.0002	–
6	8.57 × 10⁻⁵	0.0008	3.67 × 10⁻⁵	–	0.0002	–
7	8.57 × 10⁻⁵	0.0025	0.0001	–	0.0003	–
8	0.0002	0.0008	0.0002	–	2.45 × 10⁻⁵	–
9	0.0002	0.0047	0.0001	0.0002	0.0002	0
10	0.0001	0.0011	0.0001	–	2.45 × 10⁻⁵	–
11	6.12 × 10⁻⁵	0.0018	0.0002	0.0001	0.0006	0
12	0.0002	0.0019	6.12 × 10⁻⁵	–	4.90 × 10⁻⁵	–
13	0.0002	0.0804	8.57 × 10⁻⁵	–	ND	–
14	7.35 × 10⁻⁵	0.0026	0.0002	1.22 × 10⁻⁵	0.0002	0
15	8.57 × 10⁻⁵	0.0049	0.0002	0.0002	0.0004	0
16	0.0002	0.0014	0.0001	4.90 × 10⁻⁵	8.57 × 10⁻⁵	–
17	6.12 × 10⁻⁵	0.0016	0.0002	0.0004	0.0003	0
18	0.0002	0.0012	4.9 × 10⁻⁵	0.0002	0.0001	–
19	0.0001	0.0011	0.0001	6.12 × 10⁻⁵	0.0002	–

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