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Ultra-pressure liquid

The recent use of 1.7 pm size particles in ultra pressure liquid chromatography (UPLC) has considerably increased resolution and sensitivity. Analysis times of many minutes have been reduced to 1-2 min, which allows many more sample analyses to be completed per unit time. The number of applications is growing for a wide range of analytes using UPLC interfaced to MS and/or MS/MS due to the concurrent chromatographic and spectrometric increases in sensitivity. The continued addition of columns with new and varying functionality will serve to increase the number of applications further. [Pg.250]

Chen N, Yang H, Niu J, Liu S (2013) Determination of kinetic parameters and structure-activity relationships of ginsen-osides as inhibitors of cyclin-dependent kinase 5/p25 using ultra-pressure liquid chromatography with triple quadrupole tandem mass spectrometry. Rapid Commun Mass Spectrom 27 985-992... [Pg.540]

Mayer, H. K., Fiechter, G., Fischer, E. (2011). A new ultra-pressure liquid chromatography method for the determination of biogenic amines in cheese. Journal of Chromatography A, 1217, 3251-3257. [Pg.306]

Stevens, J. and Dowell, D. 2012. Determination of vitamins D2 and D3 in infant formula and adult nutritionals by ultra-pressure liquid chromatography with tandem mass spectrometry detection (UPLC-MS/MS) First action 2011.12. J. AOAC Int. 95 577-582. [Pg.277]

Key words Tricyclic antidepressants, TCAs, Ultra pressure liquid chromatography-tandem mass... [Pg.175]

Mai, M., Koh, P.K., Cheah, RY. and Chan, E.C. (2011) Ultra-pressure liquid chromatog-raphy/tandem mass spectrometry targeted profiling of arachidonic acid and eicosanoids in human colorectal cancer. Rapid Commun. Mass Spectrom. 25, 755-764. [Pg.401]

Bijlsma L, Sancho JV, Pitarch E, Ibanez M, Hernandez F (2009) Simultaneous ultra-high-pressure liquid chromatography-tandem mass spectrometry determination of amphetamine and amphetamine-like stimulants, cocaine and its metabolites, and a cannabis metabolite in surface water and urban wastewater. J Chromatogr A 1216(15) 3078-3089... [Pg.224]

Pressure between solid walls separated by ultra-thin liquid film is then expressed as follows ... [Pg.75]

UHPLC Ultra-High-Pressure Liquid Chromatography... [Pg.15]

UHPLC Ultra-high-pressure liquid chromatography... [Pg.322]

In order to obtain better and faster separation, instruments using higher pressures than common HPLC have been developed. These are often referred to as ultra-high-pressure liquid chromatographs (UPHPLC), or some similar abbreviation. They are used in a manner similar to HPLC and can be connected to mass spectrometers. [Pg.328]

Henchiz Y. Guillarme D. Martel S. Rudaz S. Veuthey J-L. Carrupt P-A. Fast log P determination by ultra-high-pressure liquid chromatography coupled with UV and mass spectrometry detections. Analytical andBioanalytical Chemistry, 2009, 394, 1919-1630. [Pg.67]

Marin JM, Gracia-Lor E, Sancho JV et al (2009) Application of ultra-high-pressure liquid chromatography-tandem mass spectrometry to the determination of multi-class pesticides in environmental and wastewater samples Study of matrix effects. J Chromatogr A 1216 1410-1420... [Pg.392]

Hasselstrom J (2011) Quantification of antidepressants and antipsychotics in human serum by precipitation and ultra high pressure liquid chromatography-tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 879(1) 123—128. doi S 1570-0232(10)00727-0 [pii] 10.1016/j. jchromb.2010.11.024... [Pg.194]

For enhanced throughput, fast RPLC methods using monolithic silica columns [238], small size particles (3 pm) packed columns [173, 195, 226, 235-237, 239, 240], ultra high pressure liquid chromatography (UHPLC) columns packed with sub-2 pm particles [145,196, 227, 245, 247] and 2.6 pm core-shell particles HPLC columns [246] have been proposed for the high-throughput separation and quantification of tamoxifen/metabolites. [Pg.232]

DeCleyn and Verzele (3Q.3J-.32) isolated the four possible isomers from piperinic acid irradiated in an ultra-violet reactor, by counter-current distribution and also the piperidides obtained synthetically from the treated piperinic acid by high pressure liquid chromatography (figure 4). The structures of the isomers were derived mainly from NMR data. Their pungency was recorded, but possibly not by rigorous methods (31.32). The results confirmed the observation of Grewe t ail. (29) that piperine is the pungent principle of pepper, and that other isomers have little taste. ... [Pg.67]

Keywords Pressurized liquid extraction supercritical fluid extraction ultra-sound-assisted extraction microwave-assisted extraction matrix solid-phase extraction high-performance liquid chromatography gas chromatography liquid-liquid extraction solid phase extraction column chromatography... [Pg.25]

The development of ultra high-pressure liquid chromatography technology has dramatically reduced the analysis time for a number of small molecules. However, we have found that the analysis of carotenes is poor with the currently available column chemistries. The development of C30 columns with backbones that can withstand ultra high pressure would allow carotenoid chemists to take full advantage of this technology. [Pg.135]

See other pages where Ultra-pressure liquid is mentioned: [Pg.16]    [Pg.274]    [Pg.85]    [Pg.1947]    [Pg.90]    [Pg.43]    [Pg.175]    [Pg.16]    [Pg.274]    [Pg.85]    [Pg.1947]    [Pg.90]    [Pg.43]    [Pg.175]    [Pg.48]    [Pg.247]    [Pg.252]    [Pg.252]    [Pg.326]    [Pg.108]    [Pg.25]    [Pg.106]    [Pg.26]    [Pg.164]    [Pg.101]    [Pg.458]    [Pg.432]    [Pg.180]    [Pg.630]    [Pg.281]    [Pg.372]    [Pg.278]    [Pg.775]    [Pg.777]   


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