Urine chromatography and analysis
Chromatography–mass spectrometry analysis of tianeptine in urine
... in urine by gas chromatography–mass ...The analysis has been carried out on a gas chromatograph Agilent 6890N with a mass- selective detector Agilent 5973 and an injector Agilent 7683 (USA) equipped ...
5
Determination of Free Catecholamines in Urine By Tandem Affinity/Ion-Pair Chromatography and Flow Injection Analysis
... a urine control sample. This urine contained mean free catecholamine levels of 162 μg/l norepinephrine, ...injecting urine samples spiked with increasing amounts of several compounds known to ...
19
Comparison of High-Performance Liquid Chromatography and Thin Layer Chromatography for Identification of Amphetamine and Methamphetamine in Human Urine
... human urine. Repeated analysis of TLC samples allowed to provide accurate data and now we may claim that TLC analy- sis is simple, rapid, sensitive and suitable alternative method for detecting the abuse of ...
5
Urine proteomics of primary membranous nephropathy using nanoscale liquid chromatography tandem mass spectrometry analysis
... When podocytes, one of the layers of filtration barrier, were destroyed through the way of complement medi- ated cytolysis, the cell lysate will be released into urine. In the present study, we demonstrate the ...
15
Determination of Ethylmalonic Acid in Human Urine by Ion Chromatography with Suppressed Conductivity
... total analysis time to significantly ...and urine samples of metabolic acidosis in patients with severe ...ion chromatography with suppressed conductivity detector is a cheaper system compared to ...
10
Quantitation of ethyl glucuronide in serum & urine by gas chromatography - mass spectrometry
... Results This exploratory work was planned to generate a standardized protocol for detection and quantization of EtG in urine and blood samples of patients with a history of alcohol abuse. A sensitive, simple and ...
6
Chromatography of metabolites in plasma and urine following oral administration of anthocyanin rich capsules
... n.a.: not available due to major interferences or loss of internal standards during sample preparation. As the recovery values from the table above (Table 16) indicates, SPAD is a very unstable sample preparation method ...
90
Fast and Sensitive Chiral Analysis of Amphetamines and Cathinones in Equine Urine and Plasma Using Liquid Chromatography Tandem Mass Spectrometry
... in urine. In this method, urine sample volume used is only ...more urine sample is used, the LLOD could be lower even though more matrix effect may be ...
9
Development of liquid chromatography-mass spectrometry protocols for quantification of imidacloprid in pig urine and for analysis of 5α-cyprinol sulfate metabolism in zebrafish
... this chromatography strategy has the best coverage and least sample ...earlier, chromatography is used to separate complex biological samples that result in a retention time measured in min on the x ...
115
Stability study of opioids and benzodiazepines in urine samples by liquid chromatography tandem mass spectrometry
... toxicological analysis (Skopp ...(or urine in this case) is a problem of data interpretation in analytical ...toxicological analysis frequently remain at room temperature for some hours during ...
10
Analysis of steroid hormones and their conjugated forms in water and urine by on-line solid-phase extraction coupled to liquid chromatography tandem mass spectrometry
... Authors’ contributions The method was fully developed by ACN. ACN was responsible for the bib- liographic research, all the experimental work and the sample collection. The preparation of all standards, solutions, ...
17
Analysis of opioids in postmortem urine samples by dispersive liquid-liquid microextraction and high performance liquid chromatography with photo diode array detection
... Standard morphine, codeine and methadone were obtained from Darou Pakhsh Pharmaceutical Co. (Tehran, Iran). HPLC grade solvents including acetonitrile, methanol, acetone, chloroform, water, phosphoric acid, potassium ...
10
Development of nanoflow liquid chromatography-nanoelectrospray ionization mass spectrometry methodology for improved urine metabolomics
... of urine Abstract The world is currently in the midst of a worldwide epidemic of HIV with at least 60 million people having been infected with the virus and 25 million dying as a ...no urine metabolomic ...
218
Determination of 8 Diuretics and Probenecid in Human Urine by Gas Chromatography Mass Spectrometry: Confirmation Procedure
... A fast and sensitive method for determination of 8 diuretics (acetazolamide, bendroflumethiazide, bumetanide, chlorthali- done, furosemide, hydrochlorothiazide, metolazone, triamterene) and masking agent (probenecid) in ...
8
MEASUREMENT OF CORTISOL IN HUMAN PLASMA AND URINE BY ULTRA PERFORMANCE LIQUID CHROMATOGRAPHY TANDEM MASS SPECTROMETRY
... Linearity and limit of quantification Linearity of the assay was evaluated by analyzing a series of cortisol standards at nine different concentrations over the range of 2.5– 400 ng/ml in plasma and 1.0–200 ng/ml in ...
5
Identification of low-abundance proteins via fractionation of the urine proteome with weak anion exchange chromatography
... comparative analysis using PDQuest 2-D software (version ...2-DE analysis of a complex protein sample can encounter resolution problems, and not all proteins can be detected on a 2-DE ...ity analysis ...
10
Characterization and Determination of Major Bioactive Acids in Camel Urine Using Gas Chromatography Mass-spectrometry
... adult-camel urine were characterized using gas chromatography-mass ...adult-camel urine sample was treated with glucuronidase/ arylsulfatase enzyme followed by extraction on Sep-Pak ® C8 ...gas ...
8
Determination of Giazepam Aminobenzophenones by two –dimensional gas chromatography mass spectrometry (GC GC MS) in urine
... in urine by determining aminobromobenzophe- none and aminocarboxymethylbrombenzophe-none by ...mL urine sample. For qualitative analysis was used both full scan ions and SIM ...
6
Gas chromatography-mass spectrometry-based untargeted metabolomic analysis of organ tissue, plasma and urine samples from a Rat Model of polycystic kidney disease
... the analysis of urine by GC-MS [10, 204, 208, 213, 214, 222], methoximation was excluded from the derivatization approach in their study due to the reaction taking up to 17 h to complete ...
255
Characterization of in vivo metabolites in rat urine following an oral dose of masitinib by liquid chromatography tandem mass spectrometry
... to urine and the mixture was stored at 4 °C over- night ...of urine and the nature of urine matrix which contains high concentration of salt participated in phase separation ...LC–MS/MS ...
18