Table 1.

Kinetic parameters of degradation of synthetic pyrethroids by strain P31.

Synthetic pyrethroids	Regression equation	k (h-1)	t1/2 (h)	R2
D-phenothrin	Ct = 53.5150e-0.0392t	0.0392	17.7	0.9802
Permethrin	Ct = 53.8361e-0.0330t	0.0330	21.0	0.9609
Cyhalothrin	Ct = 53.1980e-0.0292t	0.0292	23.7	0.9848
β-cypermethrin	Ct = 53.3589e-0.0268t	0.0268	25.9	0.9822
Deltamethrin	Ct = 52.1891e-0.0253t	0.0253	27.4	0.9736
Fenpropathrin	Ct = 57.7978e-0.0188t	0.0188	36.9	0.9902
Bifenthrin	Ct = 53.7381e-0.0117t	0.0117	59.2	0.9687