Determination of the antibiotic cephalexin in aqueous solution using a solid phase extraction cartridge of multi-walled carbon nanotubes

One of the most important chemical properties of carbon nanotubes is having a hydrophobic surface, and because of that many compounds and materials can be retained on the surface of these nano structures. In this study, by using this feature of carbon nanotubes, their ability in adsorption of Cephalexin at trace amount from aqueous solution has been tested. Samples were strongly adsorbed by carbon nanotubes and acceptable recoveries were obtained. Analyses of samples were done by high performance liquid chromatography and UV. Limit of detection of Cephalexin under optimum conditions is ranged between ۰.۱۵-۰.۲μg/ml. Recoveries of spiked sample analysis ranged from ۸۶.۸% to ۸۸.۴%.

کلیدواژه ها:

Carbon nanotubes ، Solid-phase extraction ، High performance liquid chromatography ، Cephalexin