Research Progress on Effects of Plankton on Transport and Transforma-tion of Persistent Organic Pollutants
Persistent organic pollutants(POPs)are continuously released into the natural environments,causing se-vere threats to the environmental safety and health.As the entrance of the aquatic food chain,plankton play an im-portant role in the material cycle and energy flow of aquatic ecosystems,and their adsorption,uptake,transforma-tion and transportation of POPs could greatly affect the environmental behavior of POPs.This paper summarizes the possible effects of plankton on the transportation and transformation of POPs in aquatic environments,compre-hensively analyzes the adsorption-absorption and bioconcentration/amplification processes of POPs by phytoplank-ton and zooplankton,as well as the biological and environmental factors affecting the above processes in aquatic environments.Furthermore,the degradation and transformation mechanisms of POPs by plankton were discussed in terms of dehalogenation metabolism,oxidative metabolism,and microbial co-metabolism.Finally,the biological pump effect of plankton on the vertical transport of POPs was discussed.This paper provides important references for the research about the influence of aquatic organisms on the migration and transformation of POPs.
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