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Showing 1 to 6 of 6 for “"Liquid Chromotography"”.
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Development and partial validation of a method for the quantification of benzodiazepines and antidepressants in whole blood, serum and urine by liquid chromotography - Tandem mass spectrometry
The aim of this project is to develop a single quantification method for certain benzodiazepines, opiates and antidepressants in whole blood, serum and urine by LC-MS/M5 and to consequently validate the analytical method for official use in the Division of Pharmacology at the University of Cape …
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The relationship of dietary beta-carotene intake and serum beta- carotene levels to the development of oral lesions in smokeless tobacco users
… Serum levels were assessed by high pressure liquid chromotography. No correlation between dietary beta-carotene intake and serum beta-carotene levels was observed. Results of t-test analysis indicated no significant difference in the mean serum or dietary intake of beta-carotene between the …
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Characterization of a novel tetracycline resistance gene from the Bacteroides transposons Tn4351 and Tn4400
… be separated from tetracycline by thin layer chromotography or by reverse phase liquid chromotography. Altered tetracycline has a UV-vis absorption peak at 258nm, rather than a peak at 364nm which is typical of tetracycline. Attempts to solve the structure of altered tetracycline were …
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Bestimmung von 3-Nitrotyrosin im Liquor als Hinweis für nitrosativen Stress
… of tyrosine und peroxynitrite. High performance liquid chromotography (HPLC) combined with electrochemical detection was used to determine the amount of 3-NT. It seemed to be the method of choice because using this method even very small amounts of 3-NT could be detected. Furthermore this method …
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‘Organics in ice’: Novel organic compounds in ice cores for use in palaeoclimate reconstruction
… on these results. A method of high performance liquid chromatography-mass spectrometry (HPLC-MS) including rotary evaporation preconcentration of samples is then optimised for detection of target compounds. The final method achieves good average recoveries of 80%, and reproducibility of 9% RSD. …
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Development and Applications of Liquid Sample Desorption Electrospray Ionization Mass Spectrometry (DESI-MS)
… the development and the applications of liquid sample desorption electrospray ionization mass spectrometry (DESI-MS), a new ambient ionization method with focus on the direct analysis of liquid samples. A variety of new applications of liquid sample DESI are discussed in details including …