Physiochemical analyses and molecular characterization of heavy metal-resistant bacteria from Ilesha gold mining sites in Nigeria

Journal of Genetic Engineering and Biotechnology

Table 7 Heavy metals concentration in the soil sample

Samples	1A	1B	2A	2B	3A	3B	4A	4B	5A	5B	6A	6B	7A	7B	US EPA	Mean
Cd (ppm)	0.086	0.080	0.117	0.146	0.069	0.075	0.051	0.095	0.122	0.095	0.030	0.059	0.016	0.022	0.48	0.076
Co (ppm)	0.035	0.045	0.071	0.096	0.012	0.020	0.017	0.046	0.078	0.061	0.012	0.034	0.013	0.017	50	0.039
Pb (ppm)	0.474	0.505	0.596	0.612	0.325	0.311	0.193	0.224	0.371	0.315	0.193	0.252	0.109	0.117	200	0.328
Zn (ppm)	1.064	0.890	1.221	0.756	0.975	0.985	0.610	0.525	0.815	0.701	0.572	0.615	0.320	0.298	1100	0.739
Hg (ppm)	ND	ND	ND	ND	ND	ND	ND	ND	0.796	0.358	ND	ND	0.510	0.309	1.0	0.493