Abstract: The paper presents a general overview of the use of nanoparticles to perform sample preparation. In this way the main uses of nanoparticles to carry out solid phase extraction, solid phase microextraction, liquid-liquid extraction and filtration techniques are described for a wide range of nanoparticles including carbon nanoparticles, metallic, silica and molecular imprinted polymer nanoparticles Template and target information:Review - nanoparticles in sample preparation Author keywords:Sample treatment, nanoparticles, solid phase extraction, Liquid-liquid extraction