[Pollution Characteristics and Source Identification of PAHs in Atmospheric PM in Changzhou City].

A total of 55 ambient fine particle (PM) samples were collected in Changzhou City from January to August 2016. The concentrations of 17 PM-bound PAHs in the samples were analyzed by GC-MS. Results showed that seasonal average mass concentrations of PAHs in winter, spring, and summer were 140.

[Kinetics of alkylphenols degradation in aqueous phase with excilamp irradiation].

The 206 nm irradiation from excilamp was able to directly photo-degrade 4-nonylphenol (4-NP) and 4-octylphenol (4-OP), but it could not oxidize them completely into CO2. Under the same irradiation condition, the removal efficiency of 4-OP was higher than that of 4-NP. Pseudo-first order kinetic model and modified kinetic model were used to fit the kinetics of photo-degradation process, and the direct photolysis rate constants under 206 nm UV irradiation were obtained.