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Continuous flow liquid membrane extraction

J. Liu, J. Chao, G. Jiang, Y. Cai and J. Liu, Trace analysis of sulfonylurea herbicides in water by on-line continuous flow liquid membrane extraction-C18 precolumn liquid chromatography with ultraviolet absorbance detection. J. Chromatogr.A 995 (2003) 21-28. [Pg.56]

LC techniques are widely diffused for the determination of hydrophilic but not volatile and thermally unstable pesticides. Since the European Community Directive [68] indicates 0.1 pg L" as the concentration threshold level for a single pesticide in waters destined for human consumption, to quantify these concentration levels, suitable pre-concentration and extraction procedures must be generally performed prior to the HPLC determination. The extraction methods are based on LLE, MAE, on-line continuous flow liquid membrane extraction (CFLME), and mainly on SPE and SPME. Many SPE procedures are used the packing materials are graphitized carbon, ODS, styrene-divinylbenzene co-polymers, or selective phases based on immunoafflnity. The extraction can be performed on- and off-line, manually, or in a semi-automated way. [Pg.540]

Continuous-flow liquid membrane extraction CFLME [79]... [Pg.349]

Note SLM, supported liquid membrane (aq/org/aq) MMLLE, microporous membrane liquid-liquid extraction (aq/org) PME, polymer membrane extraction (aq/polymer/org) MESI, membrane extraction with sorbent interface (aq (or gas)/polymer/gas/sorbent) CFLME, continuous flow liquid membrane extraction (aq/org (in flow)/aq) LPME2, two-phase liquid phase microextraction in hoUow fibers (aq/org) LPME3, three-phase liquid phase microextraction in hollow fibers (aq/org/aq). [Pg.361]

Liu J-E, Chao J-B, and Jiang G-B. Continuous flow liquid membrane extraction A novel automatic trace-enrichment technique based on continuous flow liquid-liquid extraction combined with supported liquid membrane. Anal. Chim. Acta 2002 455 93-101. [Pg.365]

Zhou Q-X, Liu J-F, Jiang G-B, Liu G-G, and Cai Y-Q. Sensitivity enhancement of chlorinated phenols hy continuous flow liquid membrane extraction followed hy capillary electrophoresis. J. Sep. Sci. 2004 27 576-580. [Pg.368]

Online coupling continuous-flow liquid membrane extraction with HPLC... [Pg.92]

Chao, J., Liu, J., Wen, M., Liu, J., Cai, Y., and Jiang, G., Determination of sulfonylurea herbicides by continuous-flow liquid membrane extraction online coupled with high-performance liquid chromatography, J. Chromatogr. A, 955, 183-189, 2002. [Pg.124]

Liu J-F, Chao J-B, Wen M-J, Jiang G-B. Automatic trace-enrichment of bisphenol A by a novel continuous flow liquid membrane extraction technique. J Sep Sci 2001 24 874-878. [Pg.399]

Liu J-F, Liang X, Chi Y-G et al. High performance liquid chromatography determination of chlorophenols in water samples after preconcentration by continuous flow liquid membrane extraction on-line coupled with a precolumn. Anal ChimActa 2003 487 129-135. [Pg.399]

See other pages where Continuous flow liquid membrane extraction is mentioned: [Pg.2]    [Pg.345]    [Pg.360]    [Pg.360]    [Pg.391]    [Pg.391]   
See also in sourсe #XX -- [ Pg.360 ]



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Continuous extraction

Continuous flow

Extraction membranes

Flow liquid flows

Liquid continued)

Membrane (continued

Membrane flow

Membrane, liquid extraction

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