Table 1: Kinetic information of MeHg degradation under different light conditions.

TreatmentsRate constantsFitting coefficients
UVBUVANatural lightDarkUVBUVANatural lightDark

First-order reaction (1 d−1)0.350.190.210.130.180.380.450.83
Second-order reaction (L·ng−1·d−1)1.610.820.910.430.940.850.860.90
Half-life (d)0.621.301.08
△pH0.20.10.1−1.6

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