摘要：In this study, the source of chlorine and the range of wavelength on the chlorination of pyrene in soil after the sunlight irradiation in ordinary atmospheric air were investigated. Chloride ions and pyrene were added to soil, and sunlight was irradiated. The reaction products including the original pyrene and chlorinated pyrenes in soil after the irradiation were extracted with a mixture of benzene and ethanol (4 : 1, v/v) using the sonication technique. The extracts were then cleaned up using florigil column chromatography before GC-MS (SIM) determination. The formation of chlorinated pyrenes in soil washed with distilled water was found to be strongly dependent on the concentration of chloride ions spiked in soil. It was found that the chlorinated pyrenes produced in air-dried soil after the sunlight irradiation were less than those in air dried soil spiked with chlorine ions and that the formation of chlorinated pyrenes in soil was extremely depressed by the wrapping with UV cut films. Consequently, it was also found that the chlorine source to produce chlorinated pyrenes in soil after the sunlight was mainly water soluble chloride ions and that the ultraviolet light of less than 380 nm mainly affected the formation of chlorinated pyrenes.
关键词：pyrene;chloropyrene;dichloropyrene;soil;sunlight;chloride ion
