The Effect of Light on the Transformations of Bisphenol AP in Water

摘要

Bisphenol AP (4, 4''-(J-Phenylethylidene) bisphenol, BPAP) is a member of the bisphenol family and is structurally close to bisphenol A which is a kind of suspected endocrine disruptors. These compounds could be a threat to the aquatic ecosystems andhuman health, so its transformation fate in natural environment was important. In this work, experiments were conducted to study the transformation of BPAP induced by three kinds of freshwater algae under light. Results showed that the freshwater algae are capable of promoting the degradation of BPAP under irradiation. The degradation efficiency of BPAP was increasing with algae concentration increasing. For example, in the Chlorella vulgaris suspensions, the photodegradation rate of BPAP was increasedfrom 17% to 25% with algae concentration ranging from 2.0 x JO~9 cellsL~(-1) to 6.0 x l(f cellsL~(-1). Results showed that the light had an important role in the chemical transformation of BPAP. Oxidative photodegradation is a decomposition fate of BPAPin water. The research provides some references for the fate of phenolic endocrine disruptors in natural water.