Cytotoxicity, Genotoxicity, and Phytotoxicity of Tannery Effluent Discharged into Palar River Basin, Tamil Nadu, India

Table 2

Average concentration of metals and anions in the tannery effluent collected from Palar River (all values are mean range for three observations each).

Sr. number	Metals	Concentration in tannery effluent (mg/L)	USEPA guidelines (mg/L)
1	Lead	2.98	0.2
2	Iron	5.21	0.3
3	Cobalt	3.83	0.03
4	Copper	3.12	1.0
5	Zinc	5.73	1.0
6	Manganese	4.11	1.0
7	Chromium	9.21	0.1
8	Nickel	11.79	0.1
9	Arsenic	1.46	0.05
10	Magnesium	3.87	1.0
11	Cadmium	2.26	0.1
12	Nitrate	78	50
13	Nitrite	129	12
14	Phosphate	16.9	5
15	Sulphate	776	250
16	Chloride	187	200