Kinetic Study of Biodangerous Methylmercury Degradation under Various Light Conditions

Table 1

Kinetic information of MeHg degradation under different light conditions.

Treatments	Rate constants				Fitting coefficients
	UVB	UVA	Natural light	Dark	UVB	UVA	Natural light	Dark
First-order reaction (1 d^−1)	0.35	0.19	0.21	0.13	0.18	0.38	0.45	0.83
Second-order reaction (L·ng^−1·d^−1)	1.61	0.82	0.91	0.43	0.94	0.85	0.86	0.90
Half-life (d)	0.62	1.30	1.08	—	—	—	—	—
△pH	0.2	0.1	0.1	−1.6	—	—	—	—

^∗△pH means the pH changes of the solution before and after the incubation period.