High-performance liquid chromatography solid-phase extraction

ECD = electron capture detector GC = gas chromatography HPLC = high-performance liquid chromatography MC = microcoulometric detector MS = mass spectrometry NICI = negative ion chemical ionization RSD = relative standard deviation SPE = solid phase extraction... [Pg.252]

KAYALI-SAYADI M N, RUBIO-BARROSO S, CUESTA-JIMENEZ M P and PALO-DIEZ L M (1998) Rapid determination of polycyclic aromatic hydrocarbons in tea infusion samples by high-performance liquid chromatography and fluorimetric detection based on solid-phase extraction , 123, 2145-8. [Pg.153]

High performance liquid chromatography (HPLC) has been by far the most important method for separating chlorophylls. Open column chromatography and thin layer chromatography are still used for clean-up procedures to isolate and separate carotenoids and other lipids from chlorophylls and for preparative applications, but both are losing importance for analytical purposes due to their low resolution and have been replaced by more effective techniques like solid phase, supercritical fluid extraction and counter current chromatography. The whole analysis should be as brief as possible, since each additional step is a potential source of epimers and allomers. [Pg.432]

Lin C-H, RH Lerch, EM Thurmkan, HE Garrett, ME George (2002) Determination of isoxaflutole (Balance) and its metabolites in water using solid-phase extraction followed by high-performance liquid chromatography with ultraviolet or mass spectrometry. J Agric Eood Chem 50 5816-5824. [Pg.44]

Milbemectin consists of two active ingredients, M.A3 and M.A4. Milbemectin is extracted from plant materials and soils with methanol-water (7 3, v/v). After centrifugation, the extracts obtained are diluted to volume with the extraction solvent in a volumetric flask. Aliquots of the extracts are transferred on to a previously conditioned Cl8 solid-phase extraction (SPE) column. Milbemectin is eluted with methanol after washing the column with aqueous methanol. The eluate is evaporated to dryness and the residual milbemectin is converted to fluorescent anhydride derivatives after treatment with trifluoroacetic anhydride in 0.5 M triethylamine in benzene solution. The anhydride derivatives of M.A3 and M.A4 possess fluorescent sensitivity. The derivatized samples are dissolved in methanol and injected into a high-performance liquid chromatography (HPLC) system equipped with a fluorescence detector for quantitative determination. [Pg.1332]

Zhong, L. and Yeh, K. C., Determination of indinavir in human cerebrospinal fluid and plasma by solid-phase extraction and high-performance liquid chromatography with column switching, J. Chromatogr. B, 734, 63, 1999. [Pg.312]

Hsu, C.L., Walters, R.R. (1995). Assay of the enantiomers of ibutilide and artilide using solid-phase extraction, derivatization, and achiral-chiral column-switching high-performance liquid chromatography. J. Chromatogr. B 667, 115-128. [Pg.341]

Gon9alves J.C.S. et al., 2005. Online solid-phase extraction coupled with high-performance liquid chromatography and tandem mass spectrometry (SPE HPLC-MS-MS) for quantification of bromazepam in human plasma. Ther Drug Monit 27 601. [Pg.294]

Koal T. et al., 2004. Simultaneous determination of four immunosuppressant by means of high speed and robust online solid phase extraction-high performance liquid chromatography-tandem mass spectrometry. J Chromatogr B 805 215. [Pg.296]

Raices R.S.L. et al., 2003. Determination of stavudine in human serum by online solid-phase extraction coupled to high-performance liquid chromatography with electrospray ionization tandem mass spectrometry Application to a bioequivalence study. Rapid Commun Mass Spectrom 17 1611. [Pg.296]

J.M. Pozzebon, S.C.N. Queiroz, L.F.C. Melo, M.A.Kapor and I.C.S.F. Jardim, Application of new high-performance liquid chromatography and solid-phase extraction materials to the analysis of pesticides in human urine. J. Chromatogr.A 987 (2003) 381-387. [Pg.56]

Lou, D.-W., Saito, Y., and Jinno, K. (2005). Solid-phase extraction and high-performance liquid chromatography for simultaneous determination of important bioactive ginsenosides in pharmaceutical preparations. Chromatographia 62, 349-354. [Pg.89]

Olesen OV, Plougmann P, Linnet K. 2000. Determination of nortriptyline in human serum by fully automated solid-phase extraction and on-line high-performance liquid chromatography in the presence of antipsychotic drugs. J Chromatogr B 746(2) 233-239. [Pg.39]

Pirola R, Mundo E, BeUodi L, Bareggi SR. 2002. Simultaneous determination of clomipramine and its desmethyl and hydroxy metabolites in plasma of patients by high-performance liquid chromatography after solid-phase extraction. J Chromatogr B 772(2) 205-210. [Pg.39]

Nakamura, M., Suzuki, T., Amano, K., and Yamada, S. Relation of sorption behavior of agricultural chemicals in solid-phase extraction with their n-octanolAvater partition coefficients evaluated by high-performance liquid chromatography. Anal Chim. Acta, 428(2) 219-226, 2001. [Pg.1700]

Boyd JM, Hrudey SE, Li XF, Richardson SD (2011) Solid-phase extraction and high-performance liquid chromatography mass spectrometry analysis of nitrosamines in treated drinking water and wastewater. Trends Anal Chem 30(9) 1410-1421... [Pg.129]

The stationary phase may be a solid or liquid on a solid support. The mechanisms responsible for distribution between phases include surface absorption, ion exchange, relative solubilities and steric affects . High performance liquid chromatography is a useful method for quinolizidine alkaloid analysis, especially when pure standards are available". This method was recently used for alkaloid metabolite extraction and analysis . A simple reversed-phase liquid chromatographic method has been developed for the simultaneous quantitation of four anticancerous alkaloids vincristine, vinblastine, and their precursors catharanthine and vindoline using a specific HPLC column . [Pg.133]

SD standard deviation SDE simultaneous distillation extraction SDS sodium dodecyl sulfate SFC solid fat content SFI solid fat index SHAM salicylhydroxamic acid SIM selected ion monitoring SNIF-NMR site-specific natural isotope fractionation measured by nuclear magnetic resonance spectroscopy SP-HPLC straight-phase high-performance liquid chromatography... [Pg.1309]