Recent researches using special configurations of sorptive phases such as disk, film or membrane have displayed that there is a possibility to avoid desorption step by performing a direct solidstate spectrophotometric or spectrofluorimetric analysis of the sorptive phase after extraction [28e30].
Since these configurations provided a larger exposed surface area of the sorptive phase, their extraction efficiencies and load abilities were increased and as a result, sensitivity of these techniques were enhanced without dedication to sampling time compared to other microextraction procedures.