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Showing 1-30 of 127 results for "59516" within Papers
D L Tsalev et al.
The Analyst, 123(8), 1703-1710 (1999-03-11)
A coupled system for arsenic speciation determination based on high-performance liquid chromatography (HPLC), on-line UV photooxidation and continuous-flow hydride generation atomic absorption spectrometry (HGAAS) was built from commercially available modules with minor modifications to the electronic interface, the software and
S Djabarouti et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 799(1), 165-172 (2003-12-09)
The aim of this study was to develop a specific and sensitive high-performance liquid chromatographic (HPLC) assay for the determination of levofloxacin in human plasma, bronchoalveolar lavage and bone tissues. The sample extraction was based on a fully automated liquid-solid
Arnaud Salvador et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 855(2), 173-179 (2007-06-02)
An LC-MS/MS assay for the quantitative determination of a new antibacterial agent (AVE6971) has been developed and validated in human white blood cells (WBC). The assay involved a lysing procedure of white blood cells and ultra centrifugation of the extracts.
Vijay V Upreti et al.
Biomedical chromatography : BMC, 17(6), 385-390 (2003-09-19)
A simple and sensitive high-performance liquid chromatography (HPLC) method has been developed and validated for the determination of DRF-1042, a novel orally active camptothecin (CPT) analog, in human plasma. The sample preparation was a simple deproteinization with acidified methanol yielding
Shazia Naz et al.
Pakistan journal of pharmaceutical sciences, 30(5), 1645-1649 (2017-11-01)
Cefaclor was analyzed in the human plasma by developing a simple, precise and accurate assay method which was then validated for its accuracy, specificity and precision. The mobile phase comprised of a mixture of sodium 1-pentanesulfonate, water, triethylamine and methanol.
Kornélia Tekes
Journal of chromatographic science, 46(2), 169-173 (2008-03-28)
A sensitive, simple, and reliable high-performance liquid chromatographic method with electrochemical detection is developed for the measurement of four natural products, the serotonin-related indols from human platelet-rich plasma (PRP) using N-methylserotonin as internal standard. Separation of serotonin (5HT), 5-hydroxytryptophan (5HTP)
J G Ufkes et al.
Pharmacy world & science : PWS, 20(2), 83-87 (1998-05-19)
To study the pharmacokinetics of dextromoramide in long-term opiate addicts on methadone maintenance therapy (MMT) a reverse-phase HPLC technique was developed to monitor dextromoramide and methadone concentrations in plasma simultaneously. After liquid-liquid extraction from plasma, dextromoramide and methadone were determined
W Pan et al.
Journal of chromatography. B, Biomedical sciences and applications, 703(1-2), 129-138 (1998-02-03)
A sensitive, specific and precise HPLC-UV assay was developed to quantitate cocaine (COC) and its metabolites benzoylecgonine (BE), norcocaine (NC) and cocaethylene (CE) in rat plasma. After adding 50 microl of the internal standard solution (bupivacaine, 8 microg/ml) and 500
M P Purdon et al.
Journal of pharmacological and toxicological methods, 37(2), 67-73 (1997-03-01)
A reproducible, sensitive high-performance liquid chromatography (HPLC) method has been developed to quantify hydroxytestosterone metabolites. The method features a simple one-step linear gradient of methanol in water (10%-60% methanol) for separation of the testosterone metabolites on a Supelcosil LC-18 column;
Catrina L Dupard-Julien et al.
Analytical and bioanalytical chemistry, 387(3), 1027-1032 (2007-01-06)
A reversed-phase, high-performance liquid chromatography (RP-HPLC) method that allows quantitation of low levels of epoxides has been described. The method involved derivatization of epoxides using 100- to 1,000-fold excess N,N-diethyldithiocarbamate (DTC) at 60 degrees C for 20 min at neutral
V Stocchi et al.
Amino acids, 3(3), 303-309 (1992-10-01)
In this paper we report the complete separation of amino acids as DABS-derivatives using a 3µm Supelcosil LC-18 (25 cm × 2.1 mm I.D.) narrowbore column. The system described makes it possible to perform the analysis of DABS-amino acids with
Mert Ilhan et al.
Evidence-based complementary and alternative medicine : eCAM, 2014, 578103-578103 (2014-08-29)
The aim of the present research is to evaluate the antiurolithiatic effect of the various extracts prepared from the fruits of Viburnum opulus L., in regard to its ethnobotanical record. To induce urolithiasis, 70 mg/kg sodium oxalate was injected to the
Vesna Cerkvenik-Flajs et al.
Analytica chimica acta, 663(2), 165-171 (2010-03-09)
An analytical method has been developed for the simultaneous determination of the following endectocide drugs in milk: ivermectin, abamectin, doramectin, moxidectin, eprinomectin, emamectin and nemadectin. Samples were extracted with acetonitrile, purified with solid-phase extraction on a reversed phase C(8), derivatised
W N Lin
Therapeutic drug monitoring, 9(3), 337-342 (1987-09-01)
A simple, specific, and sensitive high-performance liquid chromatography (HPLC) method has been developed for the routine monitoring in serum of the benzodiazepine anticonvulsant, clonazepam. Serum spiked with internal standard, methylclonazepam, was vortex-mixed for 1 min with chloroform at an alkaline
L Marai et al.
Canadian journal of biochemistry and cell biology = Revue canadienne de biochimie et biologie cellulaire, 61(8), 840-849 (1983-08-01)
Natural triacylglycerols were resolved by high pressure liquid chromatography on Supelcosil LC-18 columns using a gradient of 30-90% propionitrile in acetonitrile as eluting solvent. The effluent was admitted to a quadrupole mass spectrometer via a direct liquid inlet interface. The
Neil C Dias et al.
The Analyst, 128(5), 427-433 (2003-06-07)
The solvation parameter model is used to identify suitable chromatographic models for estimating the octanol-water partition coefficient for neutral compounds of varied structure by reversed-phase liquid chromatography. The stationary phase Supelcosil LC-ABZ with methanol-water mobile phases affords a series of
K Ary et al.
Journal of chromatography. A, 797(1-2), 221-226 (1998-05-16)
A reversed-phase high-performance liquid chromatographic method with electrochemical detection has been developed for the determination of buspirone from human plasma. The separation was carried out by using a Supelcosil ABZ+ plus C18 reversed-phase column and 0.05 M potassium dihydrogenphosphate (pH
H Kataoka et al.
Journal of analytical toxicology, 24(4), 257-265 (2000-06-29)
A simple and rapid method for the determination of amphetamine, methamphetamine, and their 3,4-methylenedioxy derivatives in urine samples was developed using automated in-tube solid-phase microextraction (SPME) coupled with liquid chromatography-electrospray ionization mass spectrometry (LC-ESI-MS). In-tube SPME is an extraction technique
D Breilh et al.
Journal of chromatography. B, Biomedical sciences and applications, 734(1), 121-127 (1999-11-26)
The aim of this study was to describe a high-performance liquid chromatography (HPLC) assay for the determination of cefepime and cefpirome in human serum without changing chromatographic conditions. The assay consisted to measure cefepime and cefpirome which were unbound to
P K Kunicki et al.
Polish journal of pharmacology and pharmacy, 44(2), 161-171 (1992-03-01)
A simple, rapid and sensitive high-performance liquid chromatographic method for the simultaneous determination of propafenone and 5-hydroxypropafenone in human serum is described. Method involves a single-step extraction of the drug and its metabolite with dichloromethane:2-propanol (4:1 v/v) mixture from 0.2
H Kataoka et al.
Journal of chromatography. B, Biomedical sciences and applications, 731(2), 353-359 (1999-10-08)
The technique of automated in-tube solid-phase microextraction (SPME) coupled with liquid chromatography-electrospray ionization mass spectrometry (LC-ESI-MS) was evaluated for the determination of ranitidine. In-tube SPME is an extraction technique for organic compounds in aqueous samples, in which analytes are extracted
P Chaimbault et al.
Journal of chromatography. A, 855(1), 191-202 (1999-10-09)
A qualitative determination of 20 underivatized proteinic amino acids by LC-MS is reported. The need for chromatographic separation before mass spectrometry determination is demonstrated based on the study of several amino acid pairs which have some similar characteristics. Two suitable
E Terjéki et al.
Journal of pharmaceutical and biomedical analysis, 24(5-6), 913-920 (2001-03-15)
RGH-1756 (1-(2-methoxy-phenyl)-4-(4-[4-(6-imidazo[2,1-b]-thiazolyl)-phenoxy]-butyl)-piperazine dimethansulphonate) is a novel atypical antipsychotic candidate of Gedeon Richter Ltd. A new HPLC method has been developed and validated for the quantitative determination of RGH-1756 in dog and rat plasma. The compound and the internal standard are
C Ceniceros et al.
Journal of chromatography. B, Biomedical sciences and applications, 705(1), 97-103 (1998-03-14)
A rapid and simple high-performance liquid chromatographic (HPLC) method with amperometric detection has been developed for the quantitation of labetalol in urine. The chromatography was performed at 30 degrees C using a reversed-phase column with a base deactivated silica stationary
A Tabucchi et al.
Bollettino della Societa italiana di biologia sperimentale, 66(5), 457-462 (1990-05-01)
The Authors present a procedure for the determination of adenine phosphoribosyltransferase (APRT) and hypoxanthine phosphoribosyltransferase (HPRT) in lymphocytes which exhibits high sensitivity and requires low quantities of lymphocytes. 5 normal subjects and 4 patients affected by chronic lymphocytic leukemia (CLL)
J H Nichols et al.
Clinical chemistry, 40(7 Pt 1), 1312-1316 (1994-07-01)
This automated assay determines the concentration of the antidepressant fluoxetine (Prozac) and its active metabolite norfluoxetine in serum by reversed-phase HPLC with spectrophotometric detection. Extraction, injection, and quantification are performed by the Gilson Aspec automated sample handler. The patient's specimen
V Stocchi et al.
Analytical biochemistry, 146(1), 118-124 (1985-04-01)
A simple and rapid method for the determination of ATP, ADP, AMP, NADP+, NAD+, NADPH, and NADH in human erythrocytes is described. A single-step extraction procedure employing alkaline medium and CF 50A Amicon ultrafiltration membranes allows a simultaneous and total
H R Angelo et al.
Scandinavian journal of clinical and laboratory investigation, 46(7), 623-627 (1986-11-01)
This paper describes a simple high-performance liquid chromatographic method for the determination of disopyramide and lidocaine simultaneously with their dealkylated metabolites. After basic tert-butyl methyl ether extraction and back-extraction with phosphoric acid, the drugs and their metabolites were injected into
E E Giesbrecht et al.
Therapeutic drug monitoring, 11(3), 332-336 (1989-01-01)
The initiation of a liver transplant program in a pediatric hospital prompted the development of a high-performance liquid chromatography method for monitoring cyclosporine, which requires minimal amounts of blood and produces fast, reliable results. A protein-free filtrate is prepared by
E M Koves
Journal of chromatography. A, 692(1-2), 103-119 (1995-02-10)
A comprehensive approach to the analysis for many drugs in postmortem blood and biological fluids using high-performance liquid chromatography and diode array detection has been developed. To reduce the likelihood of co-eluting interference components of postmortem blood or other drugs
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