Liquid-liquid extraction/headspace/gas chromatographic/mass spectrometric determination of benzene, toluene, ethylbenzene, (o-, m- and p-)xylene and styrene in olive oil using surfactant-coated carbon nanotubes as extractant

1. Carrillo-Carrión, C.
2. Lucena, R.
3. Cárdenas, S.
4. Valcárcel, M.