Reduced graphene oxide-based magnetic composite for trace determination of polycyclic aromatic hydrocarbons in cosmetics by stir bar sorptive dispersive microextraction.

•A sensitive analytical method to determine PAHs in cosmetic samples is presented.•Trace levels of analytes can be determined by this method.•Analytes are extracted by using SBSDME and analyzed by GC-MS.•Small volumes of organic solvents and short analysis time are needed.•This work expands the potential of SBSDME to other analytes and sorbent phases.