Dispersive solid-phase extraction based on MoS/carbon dot composite combined with HPLC to determine brominated flame retardants in water.

The method based on the dispersive solid-phase extraction (DSPE) by novel molybdenum disulfide modified with carbon dot (MoS/CD) composite combined with high-performance liquid chromatography (HPLC) was developed for the determination of three brominated flame retardants (BFRs), including tetrabromobisphenol A (TBBPA), tetrabromobisphenol A bisallylether (TBBPA-BAE), and tetrabromobisphenol A bis(2,3-dibromopropyl ether) (TBBPA-BDBPE). Owing to the stacked planar structure and large surface area of MoS, a large number of CDs can be easily loaded on the surface of MoS. Benefiting from good dispersing capability of MoS, similar density with analytes, and hydrogen bonds between CDs and the target analytes, the CDs on the surface of MoS as sorbent for the DSPE procedure exhibited good extraction performance.