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Publikováno v:
Journal of Chromatography A. 1209:95-103
An in-line procedure for protein analysis using a trypsin-based immobilized enzymatic reactor (IMER) coupled to LC-MS/MS has been developed. Various IMERs were synthesized and characterized by estimating the digestion yield of a pattern peptide in UV
Publikováno v:
Journal of Chromatography A. 1122:76-83
A rapid, simple and sensitive liquid chromatography-UV diode-array detection method was developed for the simultaneous determination of seven macrolides (erythromycin, oleandomycin, roxithromycin, josamycin, spiramycin, tylosin and ivermectin) in she
Autor:
Yolanda Martín-Biosca, Rosa María Villanueva-Camañas, Salvador Sagrado, M.J. Medina-Hernández, J.J. Martínez-Pla
Publikováno v:
Journal of Chromatography A. 1047:255-262
Dermal absorption of chemicals is an area of increasing interest for the pharmaceutical and cosmetic industries, as well as in dermal exposure and risk assessment processes. Biopartitioning micellar chromatography (BMC) is a mode of reversed phase mi
Publikováno v:
Journal of Chromatography A. 956:255-259
Chromium is a primary drinking water contaminant in the USA with hexavalent chromium, Cr(VI), being the most toxic form of the metal. As a required step in developing a revised state drinking water standard for chromium, the California Department of
Publikováno v:
Journal of Chromatography A. 912:369-373
Polymyxin B is a peptide antibiotic complex present as sulphate. The components were separated preparatively on a poly(styrene-divinylbenzene) (PLRP-S), 1000 A, 8 microm, 250 x 12.5 mm I.D. stationary phase maintained at 60 degrees C and using 215 nm
Publikováno v:
Journal of Chromatography A. 914:53-58
Until now no liquid chromatography (LC) method is described to determine the purity and content of troleandomycin and its related substances. A simple, robust, sensitive and selective isocratic liquid chromatographic method suitable for the determina
Publikováno v:
Journal of Chromatography A. 910:285-290
The liquid chromatographic separation of seven macrolides used in food producing animals in the European Union has been studied. Separation was performed by using an end-capped high-purity silica-based C18 column and mobile phases consisting of phosp
Autor:
Maria J. López de Alda, Damià Barceló
Publikováno v:
Journal of Chromatography A. 911:203-210
In this study, a procedure for the simultaneous determination in water of six estrogens (estradiol, estriol, estrone, ethynyl estradiol, mestranol, and diethylstilbestrol) and three progestogens (progesterone, norethindrone, and levonorgestrel), sele
Publikováno v:
Journal of Chromatography A. 870:237-243
A reversed-phase liquid chromatography method for analysis of polymyxin B sulphate is described. The method uses a YMC-Pack Pro, C18, 5 microm, 250x4.6 mm I.D. column maintained at 30 degrees C. The mobile phase comprises acetonitrile-sodium sulphate
Publikováno v:
Journal of Chromatography A. 852:395-406
Determination of phenols in crude oils and derived fuels requires a sample pretreatment step, usually performed by liquid-liquid extraction or preparative chromatography. In this work, sample preparation is accomplished using a silicone membrane sepa