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Liquid-phase microextraction

More recently, a miniaturised version of liquid-liquid extraction has been developed, known as liquid-phase microextraction (LPME). Two main forms of this [Pg.105]

The majority of the applications of LPME have been analysis of drugs in biofluids [35 0] or of pollutants in water samples [41 5]. However, it has been successfully applied to the analysis of triphenylphosphine oxide (TPPO) as an impurity in pharmaceuticals [46]. [Pg.106]

It is now possible to purchase commercially available systems for achieving something akin to LPME. In this instance, instead of a capillary microflbre, the extraction solvent is contained in a porous insert that sits inside the sample vial. This can be sampled automatically using the autosampler syringe after an appropriate incubation time. [Pg.106]

Figure 4.9 Two modes of liquid phase microextraction, (a) Suspended drop method and (b) membrane loop method. Figure 4.9 Two modes of liquid phase microextraction, (a) Suspended drop method and (b) membrane loop method.
H. T. Gronhaug, Pedersen-Bjergaard S, Rasmussen KE. Reduction of extraction times in liquid-phase microextraction. Journal of Chromatography B, Biomedical Sciences and Applications, 2001,760(2), 219-226. [Pg.121]

T. G. Halvorsen, S. Pedersen-Bjergaard and K. E. Rasmussen, Liquid-phase microextraction and capillary electrophoresis of citalopram, an antidepressant drug. Journal of... [Pg.121]

S. Myung, S. Yoon and M. Kim, Analysis of benzene ethylamine derivatives in urine using the programmable dynamic liquid-phase microextraction (LPME) device. Analyst, 2003,128(12), 1443-1446. [Pg.121]

S. Pedersen-Bjergaard, T. S. Ho and K. E. Rasmussen, Fundamental studies on selectivity in 3-phase liquid-phase microextraction (LPME) of basic drugs. Journal of Separation... [Pg.121]

L. Hou, G. Shen and H. K. Lee, Automated hollow fiber-protected dynamic liquid-phase microextraction of pesticides for gas chromatography-mass spectrometric analysis. Journal of Chromatography A, 2003, 985(1-2), 107-116. [Pg.121]

P. Kotianova and E. Matisova, Liquid-phase microextraction and its utilization for trace analysis of organic compounds in water matrix. Chemicke Listy, 2000,94(4), 220-225. Liu Jf, Chi Yg, Jiang Gb, C. Tai, Peng Jf and JT. Hu, Ionic liquid-based liquid-phase microextraction, a new sample enrichment procedure for liquid chromatography. Journal of Chromatography A, 2004,1026(1-2), 143-147. [Pg.121]

Liu Jf, Chi Yg and Jiang Gb, Screening the extractability of some typical environmental pollutants by ionic liquids in liquid-phase microextraction. Journal of Separation Science, 2005, 28(1), 87-91. [Pg.121]

S. M. Richoll and I. Colon, Liquid-phase Microextraction (LPME) A Novel Approach to the Isolation and Quantitation of Low Level Impurities in Pharmaceutical Applications. Abstracts of Pittcon 2004. [Pg.121]

R. Zhao, S. Chu and X. Xu, Optimization of nonequilibrium liquid-phase microextraction for the determination of nitrobenzenes in aqueous samples by gas chromatography-electron capture detection. Analytical Sciences International Journal of the Japan Society for Analytical Chemistry, 2004, 20(4), 663-666. [Pg.123]

Yazdi, A. S. and Es haghi, Z., Two-step hollow fiber-based, liquid-phase microextraction combined with high-performance liqnid chromatography A new approach to determination of aromatic amines in water. Journal of Chromatography A 1082(2), 136-142, 2005. [Pg.99]

The analysis of ILs may afford considerable insight into the physicochemical properties underlying the rich potential interaction chemistries of ILs [14] and suggest possibilities for future applications. Simultaneously, the unique features of ILs provide some intriguing new possibilities in the area of separations that have yet to be realized. Hence, topics to be covered in this chapter include analysis of ILs by LC, applications of ILs in liquid-phase microextraction (LPME), in high-performance LC (HPLC) as mobile-phase additives, and in capillary electrophoresis (CE) as buffer additives as well as applications of surface-confined ILs (SCIL) as novel stationary phases for LC. [Pg.168]

Liu, J.-R, Peng, J.-R, Chi, Y.-G., and Jiang, G.-B., Determination of formaldehyde in shiitake mushroom by ionic liquid-based liquid-phase microextraction coupled with liquid chromatography, Talanta, 65, 705-709, 2005. [Pg.180]

Shen, G. and H.K. Lee (2002). Hollow fiber-protected liquid-phase microextraction of triazine herbicides. Anal. Chem., 74(3) 648-654. [Pg.271]

To enhance extraction efficiency in the SME system (also called single-drop microextraction [SDME]), He and Lee developed a procedure termed liquid-phase microextraction (LPME),89 which, in its static mode, resembles the SME system. [Pg.71]

To simplify the above-mentioned MMLLE systems and, unlike the automated flowing MMLLE, the nonautomated, nonflowing design of MMLLE is simple to prepare manually and is an easy-to-use extraction procedure that is always done off-line prior to GC analysis. In this context, only a short piece of HF membrane is employed as an extraction device after the HF lumen and pores96 or only the pores97 have been filled with an appropriate organic solvent, the membrane is immediately immersed in the aqueous sample. The principle of this two-phase HF-MMLLE system is also called HF liquid-phase microextraction (HF-LPME) and will be briefly commented on in the next section. [Pg.86]

He, Y. and H.K. Lee. 1997. Liquid-phase microextraction in a single drop of organic solvent by using a conventional microsyringe. Anal. Chem. 69 4634-4640. [Pg.90]

Hou, L. and H.K. Lee. 2002. Application of static and dynamic liquid-phase microextraction in the determination of polycyclic aromatic hydrocarbons. J. Chromatogr. A 976 377-385. [Pg.90]

Jiang, H., Y. Qin, and B. Hu. 2008. Dispersive liquid phase microextraction (DLPME) combined with graphite furnace atomic absorption spectrometry (GFAAS) for determination of trace Co and Ni in environmental water and rice samples. Talanta 74 1160-1165. [Pg.91]

Wang, J.-X., D.-Q. Jiang, and X.-P. Yan. 2006. Determination of substituted benzenes in water samples by fiber-in-tube liquid phase microextraction coupled with gas chromatography. Talanta 68 945-950. [Pg.94]

Solvent Liquid/liquid extraction (LLE) Steam distillation/extraction (SDE) Solvent microextraction (SME) - SDME - LPME - DLLME Headspace-solvent-microextraction (HS-SME) - Headspace single-drop microextraction (HS-SDME) - Headspace liquid phase microextraction (HS-LPME) ... [Pg.319]

LPME Liquid-phase microextraction LLE with a minute amount of solvent, typically one microdrop, exposed at the tip of a microliter syringe, which is then withdrawn after extraction and injected into the GC Mostly GC-amenable analytes... [Pg.322]

Hyotylainen, T. and M.-L. Riekkola. 2008. Sorbent- and liquid-phase microextraction techniques and membrane-assisted extraction in combination with gas chromatographic analysis A review. Anal. Chim. Acta 614 27-37. [Pg.346]

See other pages where Liquid-phase microextraction is mentioned: [Pg.1]    [Pg.31]    [Pg.35]    [Pg.249]    [Pg.105]    [Pg.121]    [Pg.542]    [Pg.167]    [Pg.170]    [Pg.180]    [Pg.246]    [Pg.273]    [Pg.71]    [Pg.71]    [Pg.71]    [Pg.89]    [Pg.90]    [Pg.353]   
See also in sourсe #XX -- [ Pg.35 , Pg.36 , Pg.37 , Pg.38 , Pg.39 , Pg.39 , Pg.40 , Pg.40 , Pg.44 ]



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