Rodríguez, Jose A.Escamilla Lara, Karen A.Guevara Lara, AlfredoMiranda López, José ManuelPáez Hernández, María Elena2020-05-052020-05-052015Rodríguez, J. A., Escamilla Lara, K. A., Guevara Lara, A., Miranda López, J. M. & Páez Hernández, E. (2015). Application of an activated carbon-based support for magnetic solid phase extraction followed by spectrophotometric determination of tartrazine in commercial beverages. International journal of analytical chemistry, vol. 2015 (ID 291827), 81687-8760http://hdl.handle.net/10347/22049A method is presented for magnetic solid phase extraction of tartrazine from nonalcoholic beverages. The method involves the extraction and clean-up by activated carbon covered with magnetite dispersed in the sample, followed by the magnetic isolation and desorption of the analyte by basified methanol. The tartrazine eluted from the magnetic support was determined by spectrophotometry. Under optimal conditions, the linear range of the calibration curve ranges from 3 to 30 mg L−1, with a limit of detection of 1 mg L−1. The method was validated by comparing the results with those obtained by HPLC. A precision of <5.0% was obtained in all cases and no significant differences were observed (𝑃 < 0.05)engCopyright © 2015 Jose A. Rodríguez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly citedhttps://creativecommons.org/licenses/by/3.0/Tartrazinejournal article10.1155/2015/2918271687-8779open access