High performance liquid chromatography precolumns

Heinrikson, R. L. and Meredith, S. C., Amino acid analysis by reverse-phase high-performance liquid chromatography precolumn derivatization with phenylisothiocyanate, Anal. Biochem., 136, 65, 1984. [Pg.196]

K. S. Boos and C. H. Grimm, High performance liquid chromatography integated with solid-phase exti action in bioanalysis using resti icted access precolumn packings . Trends Anal. Chem. 18 175-180(1999). [Pg.298]

Mitsui, A., Nohta, H., and Ohkura, Y., High-performance liquid chromatography of plasma catecholamines using 1,2-diphenylethylenediamine as precolumn fluorescence derivatization reagent, /. Chromatogr., 344, 61, 1985. [Pg.195]

Larsen, B. R. and West, F. G., A method for quantitative amino acid analysis using precolumn o-phthaladehyde derivatization and high performance liquid chromatography, /. Chromatogr. Sci., 19, 259, 1981. [Pg.196]

Guo, X., Fukushima, T., Li, F., Imai, K. (2002). Determination of fluoxetine enantiomers in rat plasma by precolumn fluorescence derivatization and column-switching high-performance liquid chromatography. Analyst 127, 480-484. [Pg.341]

Wen-Chen Z, Ling-Jun L, Xian-En Z et al (2008) Application of 2-(l l//-benzo[ i]carbazol-11 -yl) ethyl carbonochloridate as a precolumn derivatization reagent of amino acid by high performance liquid chromatography with fluorescence detection. Chin J Anal Chem 36 1071-1076... [Pg.57]

Jones, B.N., and Gilligan, J.P. (1983) o-Phthaldialdehyde precolumn derivatization and reversed phase high-performance liquid chromatography of polypeptide hydrolysates and physiological fluids. J. Chromatogr. 266, 471-482. [Pg.1079]

Iwase H, Gondo K, Koike T, Ono I. 1994. Novel precolumn deproteinization method using a hydroxyapatite cartridge for the determination of theophylline and diazepam in human plasma by high-performance liquid chromatography with ultraviolet detection. J Chromatogr B Biomed Appl 655(1) 73-81. Erratum in J Chromatogr B Biomed Appl 660(2) 422. [Pg.38]

Fig. 6.1.4 Components of the high-performance liquid chromatography (HPLC) system for oxidized pterins with column switching. The autosampler starts the chromatography software, which controls valves and pumps. Pump 3 is used only for rinsing the precolumn. Details of the three valves and their different positions are explained in Fig. 6.1.5...

Miller, J. W. Garrison, A. W. Rogers, L. B. A General Approach to the Analysis of Water for Nonvolatile Organics by Precolumn Trace Enrichment High Performance Liquid Chromatography to be published. [Pg.141]

R Schuster. Determination of amino acids in biological, pharmaceutical, plant and food samples by automated precolumn derivatization and high performance liquid chromatography. J Chromatogr 431 271-284, 1988. [Pg.87]

M Reverter, T Lundh, JE Lindberg. Determination of free amino acids in pig plasma by precolumn derivatization with 6-aminoquinolyl-Af-hydroxysuccinimidyl carbamate and high-performance liquid chromatography. J Chromatogr B 696 1-8, 1997. [Pg.93]

B Carratu, C Boniglia, G Bellomonte. Optimization of the determination of amino acids in parenteral solutions by high-performance liquid chromatography with precolumn derivatization using 9-fluorenylmethyl chloroformate. J Chromatogr A 708 203-208, 1995. [Pg.95]

KL Woo, QC Hwang, HS Kim. Determination of amino acids in the foods by reversed-phase high-performance liquid chromatography with a new precolumn derivative, butylthiocarbamyl amino acid, compared to the conventional phenylthiocarbamyl derivatives and ion-exchange chromatography. J Chromatogr A 740 31-40, 1996. [Pg.95]

RG Elkin, AM Wasynczuk. Amino acid analysis of feedstuff hydrolysates by precolumn derivatization with phenylisothiocyanate and reversed-phase high-performance liquid chromatography. Cereal Chem 64 226-229, 1987. [Pg.95]

T Bauza, A Blaise, F Daumas, JC Cabanis. Determination of biogenic amines and their precursor amino acids in wines of the Vallee du Rhone by high-performance liquid chromatography with precolumn derivatization and fluorimetric detection. J Chromatogr A 707 373-379, 1995. [Pg.98]

AJ Speek, J Schrijver, WHP Schreurs. Fluorometric determination of total vitamin C and total isovitamin C in foodstuffs and beverages by high-performance liquid chromatography with precolumn de-rivatization. J Agric Food Chem 32 352-355, 1984. [Pg.470]

H Iwase, I Ono. Determination of ascorbic acid and dehydroascorbic acid in juices by high-performance liquid chromatography with electrochemical detection using L-cysteine as precolumn reduc-tant. J Chromatogr 654 215-220, 1993. [Pg.471]

E Verdon, P Couedor. Determination of ampicillin residues in milk by ion-pair reversed-phase high-performance liquid chromatography after precolumn derivatization. J Pharmaceut Bionied Anal 14 1201-1207, 1996. [Pg.685]

Direct determination of urea pesticides by high-performance liquid chromatography has been widely reported in the literature (10,32-36,127-130). Ultraviolet detection has often been used (32,33,35,36,60,127) with usually acceptable sensitivity, although this detector is nonspecific and the sensibility is, in general, low. To overcome this problem, several techniques have been assayed, such as precolumn enrichment (60), postcolumn derivatization (34,10), and the use of other detection techniques such as the electrochemical (129), photoconductivity (128,130), and fluorescence detectors (9,10,34). Table 9 summarizes representative papers using these techniques in HPLC analysis. [Pg.706]

S. Emara, H. Askal and T. Masujima, Rapid determination of methotrexate in plasma by high-performance liquid chromatography with online solid-phase extraction and automated precolumn derivatization , Biomed. Chromatogr. 12 338-342 (1998). [Pg.295]

Mopper, K., Stahovec, W.L., and Johnson, L., Trace analysis of aldehydes by reversed-phase high-performance liquid chromatography and precolumn fluorigenic labeling with 5,5-dimethyl-l,3-cyclo-hexanedione, J. Chromatogr., 256, 243, 1983. [Pg.170]

The amount of mono- and disaccharides released (glucose, xylose, cellobiose, and arabinose) by pretreatment utilizing acid and enzymatic hydrolysis was analyzed by high-performance liquid chromatography (HPLC) (Shimadzu, Kyoto, Japan), using an Aminex HPX-87H column with a matching precolumn (Bio-Rad, Hercules, CA) at 65°C. The eluent was 5 mM H2S04 at a flow rate of 0.5 mL/min with detection by refractive index. [Pg.512]

The procedure involves precolumn oxidation of formate with formate dehydrogenase which is accompanied by a corresponding reduction of p-nicotinamideadenine dinucleotide (P(NAD)+) to reduced P-nicotinamide dinucleotide (ie P NADH). The latter is quantified by high performance liquid chromatography. See also Table 4.1. [Pg.104]

Jen J-F, Tsai M-Y. 1994. Determination of phenol in urine by high-performance liquid chromatography with on-line precolumn enzymatic hydrolysis of the conjugates. J Chromatogr 658 87-92. [Pg.390]

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