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Chromatography sorptive

Chromatography Chromatography is a sorptive separation technique that allows multicomponent separations in both gas and Hquid phase. As a preparative tool, it is often used as a displacement-purge process, although many applications employ an inert-displacement mode, especially for use in analysis. General characteristics and operating modes are discussed in a separate part of this section. [Pg.1544]

The practices of isocratic and gradient sorptive chromatography are very different. Isocratic chromatography tends to be very sensitive to the details of mobile phase preparation, temperature, pump speed, and sample composition. Gradient chromatography is usually more tolerant of small variations in these factors but may be extremely sensitive to column history, equilibration time, and gradient preparation. [Pg.22]

PLE pressurized liquid extraction, SPE solid phase extraction, UE ultrasonic extraction, DSPE dispersive solid phase extraction, SBSE stir bar sorptive extraction, TD-GC-MS thermal desorption-gas chromatography-mass spectrometry, LAS linear alkylbenzene sulfonates, CDEAs coconut diethanol amides, NPEOs nonylphenol ethoxylates, DP degradation products, SPC sulphenyl carboxylates, PCDD dibenzo-p-dioxins (PCDD), PCDF dibenzofurans, PCBs biphenyls... [Pg.34]

Rodil R, Moeder M (2008) Development of a method for the determination of UV filters in water samples using stir bar sorptive extraction and thermal desorption-gas chromatography-mass spectrometry. J Chromatogr A 1179(2) 81—88... [Pg.45]

Tan BL, Hawker DW, Muller JF, Tremblay LA, Chapman HF (2008) Stir bar sorptive extraction and trace analysis of selected endocrine disrupters in water, biosolids and sludge samples by thermal desorption with gas chromatography-mass spectrometry. Water Res 42 404 112... [Pg.103]

Chromatography Chromatography is a sorptive separation technique that allows multicomponent separations in both gas and liquid... [Pg.53]

Stir-Bar Sorptive Extraction-Enantioselective Multidimensional Gas Chromatography-Mass Spectrometry... [Pg.390]

Adsorption techniques such as ion exchange, HIC, chromatofocusing, reversed-phase chromatography, and affinity chromatography can have high capacity factors because experimental conditions can be manipulated so that the elution volume for a peak can exceed the total bed volume (VM as is the case with peaks 2 and 3 in Fig. B4.2.4.) However, in gel filtration, which is a nonad-sorptive technique, all peaks must elute within the volume Vy- V(h as is the case with peak 1 in Fig. B4.2.4. [Pg.285]

Kawaguchi, M., Y. Ishii, N. Sakui, N. Okanouchi, R. Ito, K. Inoue, K. Saito, and H. Nakazawa. 2004. Stir bar sorptive extraction with in situ derivatization and thermal desorption-gas chromatography-mass spectrometry in the multi-shot mode for determination of estrogens in river water samples. J. Chromatogr. A 1049 1-8. [Pg.92]

Kende, A., Z. Csizmazia, T. Rikker, et al. 2006. Combination of stir bar sorptive extraction—retention time locked gas chromatography-mass spectrometry and automated mass spectral deconvolution for pesticide identification in fruits and vegetables. Microchem. J. 84 63-69. [Pg.366]

Popp, P., C. Bauer, and L. Wennrich. 2001. Application of stir bar sorptive extraction in combination with column liquid chromatography for the determination of polycyclic aromatic hydrocarbons in water samples. Anal. Chim. Acta 436 1-9. [Pg.366]

Llorca-Porcel, J., G. Martinez-Sanchez, B. Alvarez, M.A. Cobollo, and I. Valor. 2006. Analysis of nine polybrominated diphenyl ethers in water samples by means of stir bar sorptive extraction-thermal desorption-gas chromatography-mass spectrometry. Anal. Chim. Acta 569 113-118. [Pg.470]

Column chromatography is of two kinds. In one the column is packed full of granular sorptive material, giving a packed column. In the other the column is empty except for a thin layer of sorptive material (usually a liquid film or bonded layer) coated on the wall of the column. Such columns, usually of small diameter (see Figure 1.3), are called capillary columns. They are used mainly in GC (20) but are undergoing rapid development in LC and SFC [21-23]. [Pg.230]

Sorptive properties of starch in thin-layer chromatography with respect to such metal ions as Fe, Hg, Sn, As, Sb, and Cr have been presented in several papers.523 526... [Pg.319]

Prieto, A., Zuloaga, O., Usobiaga, A., Etxebarria, N., Fernandez, L.A., Marcic, C., de Diego, A. Simultaneous speciation of methylmercury and butyltin species in environmental samples by headspace-stir bar sorptive extraction-thermal desorption-gas chromatography-mass spectrometry. J. Chromatogr. A 1185, 130-138 (2008)... [Pg.236]

Rita, A., Silva, M., Nogueira, J.M.F. Stir-bar-sorptive extraction and liquid desorption combined with large-volume injection gas chromatography-mass spectrometry for ultra-... [Pg.427]

Niu, Y., Yu, D., Xiao, Z., Zhu, J., Song, S., Zhu, G. Use of stir bar sorptive extraction and thermal desorption for gas chromatography-mass spectrometry characterization of selected volatile compounds in Chinese liquors. Food Anal. Methods (2015). doi 10.1007/sl2161-014-0060... [Pg.428]

Bonet-Domingo, E., Grau-Gonzalez, S., Martin-Biosca, Y., Medina-Hemandez, M.J., Sagrado, S. Harmonized internal quality aspects of a multi-residue method for determination of forty-six semivolatile compounds in water by stir-bar-sorptive extraction-thermal desorption gas chromatography-mass spectrometry. Anal. Bioanal. Chem. 387, 2537-2545 (2007)... [Pg.428]

Kawaguchi, M., Ito, R., Sakui, N., Okanouchi, N., Saito, K., Seto, Y., Nakazawa, H. Stir-bar-sorptive extraction, with in-situ deconjugation, and thermal desorption with in-tube silylation, followed by gas chromatography-mass spectrometry for measurement of irrinary 4-nonylphenol and 4-tert-octylphenol glucuronides. Anal. Bioanal. Chem. 388, 391-398 (2007)... [Pg.428]

Van Hoeck, E., Canale, F., Cordero, C., Compemolle, S., Bicchi, C., Sandra, P. Multiresidue screening of endocrine-disrupting chemicals and pharmaceuticals in aqueous samples by multi-stir bar sorptive extraction-single desorption-capillary gas chromatography/mass spectrometry. Anal. Bioanal. Chem. 393, 907-919 (2009)... [Pg.428]

To obtain the adsorbed amount as a function of pressure and temperature different variables can be measured adsorbed mass by means of a bedance, consumption of the sorptive gas by means of calibrated volumes, concentration changes in a carrier gas by means of gas chromatography, changes of the dielectric constant, heat of adsorption, nuclear magnetic resonance of special adsorptives, radiation dose of radioactive labelled gas. [Pg.387]

See other pages where Chromatography sorptive is mentioned: [Pg.1530]    [Pg.210]    [Pg.218]    [Pg.675]    [Pg.22]    [Pg.48]    [Pg.38]    [Pg.473]    [Pg.397]    [Pg.239]    [Pg.244]    [Pg.226]    [Pg.379]    [Pg.358]    [Pg.79]    [Pg.223]    [Pg.228]    [Pg.230]    [Pg.353]    [Pg.95]    [Pg.1352]    [Pg.6099]   
See also in sourсe #XX -- [ Pg.22 ]



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