CRCU

Chemical Research in Chinese Universities ›› 2012, Vol. 28 ›› Issue (5): 807-813 .

• Articles • Previous Articles     Next Articles

Determination of Vanadyl Porphyrins by Liquid-liquid Microextraction and Nano-baskets of p-tert-Calix[4]arene Bearing Di-[N-(X)sulfonye Carboxamide] and Di-(1-propoxy) in Ortho-cone Conformation

MOKHTARI Bahram, POURABDOLLAH Kobra   

  1. Razi Chemistry Research Center(RCRC), Shahreza Branch, Islamic Azad University, Shahreza, Iran
  • Received:2011-11-09 Revised:2011-12-21 Online:2012-09-25 Published:2012-09-07
  • Supported by:
    Supported by the Islamic Azad University(Shahreza Branch) and the Iran Nanotechnology Initiative Council.

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Abstract: Dispersive liquid-liquid microextraction technique was introducd to remove the centrifuging step and conduct inclusion microextraction of charged porphyrins by nano-baskets. For nano-baskets of p-tert-calix[4]arene bearing di-[N-(X)sulfonyl carboxamide] and di-(1-propoxy) in ortho-cone conformation was synthesized and used. The related parameters including ligand concentration, the volume of water disperser, salt effect, and extraction time were optimized. The linear range, detection limit(S/N=3) and precision(RSD, n=6) were determined to be 0.2―50, 0.07 μg/L and 5.3%, respectively. The results reveal that the new approach is competitive analytical tool and an alternative of the traditional methods in the crude oil and related systems.

Key words: Nano-basket, Dispersive liquid-liquid microextraction, Vanadyl porphyrin, Calix[4]arene