Search Results - "Deventer, K."
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1
Comprehensive analysis by liquid chromatography Q‐Orbitrap mass spectrometry: Fast screening of peptides and organic molecules
Published in Journal of mass spectrometry. (01-06-2018)“…The number of substances nominally listed in the prohibited list of the World Anti‐Doping Agency increases each year. Moreover, many of these substances do not…”
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2
Sensitive detection of 3′-hydroxy-stanozolol glucuronide by liquid chromatography–tandem mass spectrometry
Published in Journal of Chromatography A (31-05-2013)“…► A simple and fast confirmation method by LC–MS of stanozolol misuse is presented. ► 3′-hydroxy-stanozolol glucuronide is used as target compound. ►…”
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3
Development and validation of an open screening method for diuretics, stimulants and selected compounds in human urine by UHPLC–HRMS for doping control
Published in Analytica chimica acta (06-04-2012)“…[Display omitted] ► A new doping control screening method using UHPLC–HRMS is presented. ► Screening was performed in full scan MS with scan-to-scan polarity…”
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4
Prevalence of legal and illegal stimulating agents in sports
Published in Analytical and bioanalytical chemistry (01-08-2011)“…This paper reviews the prevalence of legal and illegal stimulants in relation to doping-control analysis. Stimulants are among the oldest classes of doping…”
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5
Qualitative detection of diuretics and acidic metabolites of other doping agents in human urine by high-performance liquid chromatography-tandem mass spectrometry : Comparison between liquid-liquid extraction and direct injection
Published in Journal of chromatography (31-07-2009)“…Direct injection of urine has gained interest in the field of analytical toxicology, including doping control analysis. However, implementation of a direct…”
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6
Development and validation of an LC–MS/MS method for the quantification of ephedrines in urine
Published in Journal of chromatography. B, Analytical technologies in the biomedical and life sciences (01-02-2009)“…The objective of this study was to develop a simple and robust LC–MS/MS method for the quantification of ephedrine type substances in urine. Sample preparation…”
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7
Validation of a screening method for corticosteroids in doping analysis by liquid chromatography/tandem mass spectrometry
Published in Rapid communications in mass spectrometry (01-01-2003)“…A selective and sensitive method for the screening of nine corticosteroids in human urine has been validated. Analyses were performed using an ion trap…”
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8
Direct quantification of 11-nor-Delta(9)-tetrahydrocannabinol-9-carboxylic acid in urine by liquid chromatography/tandem mass spectrometry in relation to doping control analysis
Published in Rapid communications in mass spectrometry (30-04-2010)“…An accurate and precise method for the quantification of 11-nor-Delta(9)-tetrahydrocannabinol-9-carboxylic acid (THCA) in urine by liquid chromatography/tandem…”
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9
Simultaneous determination of beta-blocking agents and diuretics in doping analysis by liquid chromatography/mass spectrometry with scan-to-scan polarity switching
Published in Rapid communications in mass spectrometry (01-01-2005)“…A previously described method for the screening of 18 diuretics and probenecid was substantially extended with 21 beta‐blockers and 8 other diuretics allowing…”
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10
Development and validation of a ultra high performance liquid chromatography–tandem mass spectrometric method for the direct detection of formoterol in human urine
Published in Journal of pharmaceutical and biomedical analysis (01-11-2012)“…Formoterol is a long acting β2-agonist and has proven to be a very effective bronchodilating agent. Hence it is frequently applied therapeutically for the…”
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11
Quantitative detection of inhaled formoterol in human urine and relevance to doping control analysis
Published in Drug testing and analysis (01-06-2012)“…Formoterol is a frequently prescribed β2‐agonist used for the treatment of asthma. Due to performance‐enhancing effects of some β2‐agonists, formoterol appears…”
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12
Detection and characterization of urinary metabolites of boldione by LC-MS/MS. Part I: Phase I metabolites excreted free, as glucuronide and sulfate conjugates, and released after alkaline treatment of the urine
Published in Drug testing and analysis (01-10-2012)“…Boldione (1,4‐androstadien‐3,17‐dione) is included in the list of prohibited substances, issued by the World Anti‐Doping Agency (WADA). Endogenous production…”
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13
Screening for amphetamine and amphetamine-type drugs in doping analysis by liquid chromatography/mass spectrometry
Published in Rapid communications in mass spectrometry (01-01-2006)“…A selective and sensitive method for the qualitative screening of urine samples for 27 amphetamine and amphetamine‐type drugs in the field of doping analysis…”
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14
Quantitative LC–MS determination of strychnine in urine after ingestion of a Strychnos nux-vomica preparation and its consequences in doping control
Published in Forensic science international (20-12-2006)“…A simple, fast and sensitive method for the quantitative determination of strychnine residues in urine has been developed and validated. The method consists of…”
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15
Detection of urinary markers for thiazide diuretics after oral administration of hydrochlorothiazide and altizide-relevance to doping control analysis
Published in Journal of Chromatography A (20-03-2009)“…In sports, thiazide diuretics are used to flush out previously taken prohibited substances with forced diuresis and in sports where weight classes are involved…”
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16
Stability of selected chlorinated thiazide diuretics
Published in Journal of pharmaceutical and biomedical analysis (20-02-2009)“…In sports, diuretics are used for two main reasons: to flush previously taken prohibited substances with forced diuresis and in sports where weight classes are…”
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17
Direct quantification of morphine glucuronides and free morphine in urine by liquid chromatography–tandem mass spectrometry
Published in Forensic toxicology (01-07-2012)“…A simple and robust liquid chromatographic-tandem mass spectrometric method was developed and validated for the direct quantification of the structural isomers…”
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18
Screening for 18 diuretics and probenecid in doping analysis by liquid chromatography-tandem mass spectrometry
Published in Biomedical chromatography (01-12-2002)“…A fast and selective liquid chromatography–tandem mass spectrometric (LC/MS/MS) method for the screening of 18 diuretics and probenecid in human urine is…”
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19
Screening for anabolic steroids in doping analysis by liquid chromatography/electrospray ion trap mass spectrometry
Published in Biomedical chromatography (01-05-2006)“…A fast and selective LC/MS/MS method for the screening of four anabolic steroids in human urine has been developed and validated. Liquid–liquid extraction with…”
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20
Investigation of urinary excretion of hydroxyethyl starch and dextran by uhplc-hrms in different acquisition modes
Published in Biology of sport (2014)“…Plasma volume expanders (PVEs) such as hydroxyethyl starch (HES) and dextran are misused in sports because they can prevent dehydration and reduce haematocrit…”
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