Preparation of carbon nanotube enriched with {Mo154} for the hollow fiber-solid phase microextraction of naproxen in urine samples

According to our experience from previous studies on the development of novel catalytic methods for oxidation of organic compounds in green media [1-3], we describe the preparation of CNT enriched with polyoxomolybdate {Mo154}. {Mo154} was prepared by a one-step reaction at room temperature and characterized by FT-IR, XRD, Uv-Vis and TEM [4]. Based on chemical adsorption between {Mo154} and carboxylic acid groups in CNT, which were introduced to the CNTs by adding dilute nitric acid, {Mo154} was successfully located on the CNTs as the modifier. The hollow-fiber was used for the microextraction of the naproxen from urine sample under the optimized conditions as sensitive technique to determinate naproxen. After optimizing the reaction conditions, extraction of naproxen in the presence of hollow-fiber combined with fluorescence spectrophotometry was performed.