Abstract:
As alternatives of brominated flame retardants (BFRs), the production and application of organophosphate esters (OPEs) have increased significantly since several BFRs have been listed as persistent organic pollutants (POPs) by the Stockholm Convention. Recent studies indicated that OPEs could be transported to marine environment through riverine runoff and long-range atmosphere transport, etc., posing certain risk to the marine ecosystem. This paper systematically summarizes the occurrence of OPEs in various marine compartment, including air, water and sediments, as well as in marine organisms. The physical transport (air-sea gas exchange, atmospheric dry deposition and ocean current transport) and biogeochemical processes (bioaccumulation and transformation, biological pump and microbial degradation) of OPEs were further discussed. Given the continuous large volume production and application of OPEs, this class of compounds will continue to be released into the ocean. Therefore, systematic environmental monitoring and ecological risk assessment of marine OPEs are urgently needed.