Catalase Activity in Brown Mussels (Perna perna) under Acute Cadmium, Lead, and Copper Exposure and Depuration Tests

Table 2

Means (±SD) of bioaccumulation of different concentrations of cadmium, lead, and copper after 72 h exposure and Pearson correlation coefficients between metals exposure and metals accumulation.

Tests of cadmium and lead			Test of copper
Concentration; (mg⋅L^−1)	Tissue Cd content; (mg⋅Kg^−1 dw^−1)	Tissue Pb content; (mg⋅Kg^−1 dw^−1)	Concentration; (mg⋅L^−1)	Tissue Cu content; (mg⋅Kg^−1 dw^−1)
Control	<3	<20	Control	31.92 ± 0.0001
0.05	<3	<20	0.005	51.48 ± 0.0002
0.20	10.68 ± 0.0013	80.12 ± 0.0001	0.015	78.64 ± 0.0001
1	72.46 ± 0.0007	325.26 ± 0.0003	0.025	91.99 ± 0.0001
2	73.45 ± 0.0012	481.80 ± 0.0004	—	—
4	249.01 ± 0.0016	982.14 ± 0.0002	—	—
8	381.57 ± 0.0016	922.72 ± 0.0001	—	—
Correlation	0.794^a	0.891^a	0.985^a

Highly significant correlation ( < 0.01).