Phenols micellar electrokinetic chromatography

Pomponio, R., Gotti, R., Hudaib, M., and Cavrini, V. 2002. Analysis of phenolic acids by micellar electrokinetic chromatography application of Echinacea purpurea plant extracts. J. Chromatogr. A 945, 239-247. 

Ong CP, Ng CL, Chong NC, et al. 1991. Analysis of priority substituted phenols by micellar electrokinetic chromatography. Environ Monitoring and Assessment 19 93-103. 

Sainthorant C, Morin P, Dreux M, Baudry A, Goetz N. Separation of phenylenedia-mine, phenol and aminophenol derivatives by micellar electrokinetic chromatography. comparison of the role of anionic and cationic surfactants. J Chromatogr A 1995 717 167. 

Wen, Y., Li, J., Liu, J., Wenhui, L., Ma, J., Chen, L. Dual cloud point extraction coupled with hydrodynamicelectrokinetic two-step injection followed hy micellar electrokinetic chromatography for simultaneous determination of trace phenolic estrogens in water samples. Anal. Bioanal. Chem. 405, 5843-5852 (2013)... 

Pietta et al. (1998a) presented a qualitative evaluation on the CAD in E. purpurea, E. pallida, and E. angustifolia (Table 8.2) using micellar electrokinetic chromatography (MEKC). The presence of the CAD was consistent with previous reports (Becker and Hsieh, 1985 Bauer et al., 1988a,b Cheminat et al., 1988). The only discrepancy was that cichoric acid was not found in E. angustifolia by MEKC. Although cichoric acid is considered the most important CAD, a brief discussion on the other CAD is warranted due to the antioxidant potential of phenolic materials. 

Huang, H. Y., Lien, W. C., and Chiu, C. W. 2005. Comparison of microemulsion elec-trokinetic chromatography and micellar electrokinetic chromatography methods for the analysis of phenolic compounds. J. Sep. Sci. 28 973-81. 

The same microchip electrophoresis system was used by the Takeda and coworkers " to separate phenolic compounds [bisphenol A, 4-nonylphenol, 4-(l,l,3,3-tetramethylbutyl)phenol and 4-tert-butylphenol] by micellar electrokinetic chromatography (MEKC). The samples were loaded for 25 s using a pinched injection scheme. fi-Cyclodextrin was added to the MEKC buffer to further improve... 

Cifuentes, A., Bartolome, B., and Gomez-Cordoves, C., Fast determination of procyanidins and other phenolic compounds in food samples by micellar electrokinetic chromatography using acidic buffers. Electrophoresis, 22,1561, 2001. 

H. Harino, S. Tsunoi, T. Sato and M. Tanaka, Applicability of micellar electrokinetic chromatography with a donble-chain surfactant having two sulfonate groups to the determination of pollutant phenols in water. Ana/. ScL, 16, 1349-1351, 2000. 

A.L. Crego and M.L. Marina, Capillary zone electrophoresis versus micellar electrokinetic chromatography in the separation of phenols of environmental interest, J. Liq. Chrom. Rel. TechnoL, 20, 1-20, 1997. 

S. Kar and P.K. Dasgupta, Measurement of phenols on a loop-supported liquid film by micellar electrokinetic chromatography and direct UV detection, J. Chromatogr. A, 379, 379-387, 1996. 

E. Blanco, M.C. Casais, M.C. Mejuto and R. Cela, Approaches for the simultaneous extraction of tetrabromobisphenol A, tetrachlorobisphenol A and related phenolic compounds from sewage sludge and sediment samples based on matrix sohd-phase dispersion, J. Chromatogr. A, 78, 2772-2778, 2006. S. Takeda, A. Omura, K. Chayama, H. Tsuji, K. Fukushi, M. Yamane, S.-I. Wakida, S. Tsubota and S. Terabe, Separation and on-line concentration of bisphenol A and alkylphenols by micellar electrokinetic chromatography with cationic surfactant, J. Chromatogr. A, 979, 425-429, 2002. 

In 1984. Terabe and collaboratorsdescribed a modification of CE that permitted the separation of low-moleeular-mass aromatic phenols and nitro compounds with equipment such as shown in Figure 30-1. Micellar electrokinetic chromatography (MEKC) is a type of CE that offers several unique features. Like CE, MEKC provides highly efficient separations on microvolumes of sample solution without the need for... 

Micellar electrokinetic chromatography (MEKC) has been used by several authors for the separation of phenolic compoimds [103] and in some cases for the determination in water [104], Off-line SPE using pol)nneric sorbents and MEKC with ECD were used for the determination of chlorinated phenols in a river at a low pg/L level [104]. Generally, one problem associated with miniaturized techniques such as CE when combined with UV detection is its limitation to small injection volumes. Therefore, efficient enrichment steps in the sample preparation are necessary. 

Otsuka, K., S. Terabe, and T. Ando, Electrokinetic chromatography with micellar solutions Retention behaviour and separation of chlorinated phenols, J. Chromatogr. 348 39- 47 (1985). 

Guan, Y.Q., Chu, Q.C., Fu, L. et al. (2006) Determination of phenolic antioxidants by micellar electrokinetic capillary chromatography with electrochemical detection. Food Chem., 94, 157-162. 

Delgado-Zamarreno, M. M., I. Gonzalez-Maza, A. Sanchez-Perez, and R. Carabias Martinez. 2007. Analysis of synthetic phenolic antioxidants in edible oils by micellar electrokinetic capillary chromatography. Food Chem. 100(4) 1722-1727. 

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