| The vitamins were assayed by high-performance liquid chromatography and the trace elements by atomic-absorption spectroscopy. |
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| All ignitable liquids were confirmed by gas chromatography and mass spectroscopy, according to the report. |
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| High-performance liquid chromatography methods gave results close to those found using mass spectrometric techniques. |
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| Some of the most common separation techniques are leaching, flotation, filtration, chromatography, and centrifugal force. |
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| Fatty acid concentrations were measured by gas chromatography of fatty acid methyl esters. |
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| We measured the circumference of the waist and hips, and we analysed subcutaneous abdominal adipose tissue by gas chromatography for fatty acids. |
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| This can then give a molecule with twice the expected molecular weight when analysis, such as gas chromatography, is undertaken. |
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| The residue was redissolved in 0.5 ml of hexane and analysed by gas-liquid chromatography. |
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| The volatile profile of fruits determined by gas chromatography and mass spectroscopy is complex, including many alcohols, aldehydes and esters. |
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| The platinated oligonucleotides were repurified by ion-exchange fast protein liquid chromatography. |
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| Fatty acid methyl esters were analyzed by gas chromatography as described above. |
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| The charcoal tubes were desorbed with 1 ml of methylene chloride and analyzed by gas chromatography and mass spectrometry. |
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| Steam distillation or chromatography of wood and wood residues can release terpenes. |
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| Finally in 1945, scientists isolated promethium from uranium fission products purified by ion-exchange chromatography. |
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| Odors were collected from the headspace of individual flowers and analyzed by gas chromatography coupled to mass spectrometry. |
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| The extracts obtained were prefiltered through glass wool and sodium sulfate anhydride and filtered by column chromatography. |
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| Flavour and fragrance researchers rely heavily on standard analytical techniques such as gas chromatography and mass spectrometry. |
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| The OC levels were measured by gas chromatography with electron capture detection. |
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| To find steroid traces in urine, scientists use gas chromatography and mass spectrometry testing. |
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| Final separation was achieved by fast protein liquid chromatography, followed by dialysis and lyophilization, resulting in a white powder. |
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| The effluent was analyzed for chemical oxygen demand, and the oxidation products were analyzed using gas chromatography. |
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| Several attempts were made to analyze the sample by chiral chromatography but a single peak was always found. |
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| Total lipid extracts were separated into neutral and polar lipid fractions by column chromatography on Florisil 60-100 mesh. |
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| Nitrate analysis was performed with an isocratic high-performance liquid chromatography method with UV-detection. |
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| The separation and final purification of the two enzymes was achieved by anion exchange chromatography. |
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| The quantification of these compounds was performed by chromatography before and after laser irradiation. |
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| The product was isolated by silica gel column chromatography utilizing a gradient system of increasing polarity. |
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| Using a disposable glass Pasteur pipette, 0.5 ml of the upper phase was transferred to a gas chromatography vial and capped. |
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| Both blood and urine screening tests use thin layer chromatography to separate the amino acids present. |
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| Metabolites of gylcolysis and the citrate cycle were measured by ion chromatography coupled to mass spectrometry. |
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| Traditional toxicology screens that employ thin-layer chromatography can detect MDMA metabolites in the urine. |
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| In that study, AQ composition was confirmed by infrared spectroscopy, gas chromatography and thin-layer chromatography. |
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| Fatty acid methyleslers were purified by high-performance thin-layer chromatography and subjected to gas-chromatographic analysis. |
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| All samples were checked after the NMR experiments by thin-layer chromatography as described, and revealed no contamination or lipid degradation. |
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| Using high pressure liquid chromatography, the alkaloids can be purified and crystallized. |
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| If the stationary phase is solid, the separation process is called adsorption chromatography. |
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| Amino acid analyses were carried out by ion exchange chromatography on sulphonated polystyrene resin linked to divinyl benzene. |
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| Five microlitres of the remaining extract was analysed by thin layer chromatography according to Wollenweber. |
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| The lipid was found to migrate as a single spot under thin layer chromatography. |
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| Therefore, a high-performance liquid chromatography method was developed to assay sulfadimidine. |
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| Plasma levels of micronutrients were analyzed by high-pressure liquid chromatography. |
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| The contents of sucrose, glucose and fructose in peel tissue were measured using high-pressure liquid chromatography. |
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| The procedure for the isolation of PHU from freshly collected male urine included filtration, ultrafiltration and reverse-phase chromatography. |
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| The procedure for the preparation of CDA-II from male urine includes filtration, ultrafiltration and reverse-phase chromatography. |
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| Their method takes just 15 minutes to separate the compounds in crude extracts using high-performance liquid chromatography. |
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| Other methods of molecular weight determination include gel permeation chromatography, end-group analysis, and osmometry. |
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| The IBP team has applied gas chromatography and olfactometry to the problem. |
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| The quality of lipids was tested by thin layer chromatography. |
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| Deoxycytidine was separated from cytidine using thin-layer chromatography. |
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| A gas chromatography method recommended by NIOSH for trimellitic anhydride should be adaptable to organic anhydrides that can be volatilized without decomposition. |
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| Following chromatography, the plate was dried and autoradiographed. |
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| The degree of sulfonation was ascertained by means of chromatography. |
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| This has important applications in protein chromatography, immunoassays for medical diagnostic tests, development of biosensors, biotechnology, and biocatalysis. |
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| As a good chemist should, he took up his compound in some solvent and filtered it, so as not to introduce grit and crud into the pumps or the chromatography column. |
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| We confirmed or established identification using a simple chemical test, the Marquis reagent and gas chromatography with mass-spectrometry detection. |
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| The chemical analysis of VOCs was carried out with thermal desorption gas chromatography and an automatic thermal desorber coupled to PE 8700 gas chromatograph. |
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| Sensitivity can be readily increased by derivatizing with a UV-absorbing or fluorescent species and separation by micellar electrokinetic capillary chromatography. |
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| Following chemical degradation, the amounts of aliphatic and aromatic suberin monomers were analysed quantitatively by gas chromatography and mass spectrometry. |
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| Gas chromatography is a standard analytical technique for separating chemicals in a complex sample. |
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| Determination of gabapentin in serum using solid phase extraction and gas-liquid chromatography. |
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| Separation of tissue and serum creatine kinase isoenzymes by ion-exchange column chromatography. |
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| Copolymeric solid-phase extraction for quantitating drugs of abuse in urine by wide-bore capillary gas chromatography. |
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| After equilibration, the serum was alkalinized, extracted with n-hexane, and fractionated by Sephadex LH-20 chromatography. |
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| A notable exception has been the chromatography columns with their multifarious support equipment and instrumentation. |
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| Plasma and urinary concentrations of nadolol were determined using high performance liquid chromatography. |
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| The ChromPeak Detection Option and MultiValve Controller automates prep chromatography applications. |
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| Concentration of 3-hydroxybutyrate is usually determined through methods such as chromatography, isotopic measurements, and spectrophotometry. |
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| Bilberry anthocyanins were analyzed by high performance liquid chromatography with visible or mass spectrometric detection. |
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| Agarose, dextran, and cellulose are the natural polymers that are most commonly used as resins in chromatography applications. |
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| Column chromatography of fraction E1 yielded ursolic acid, euscaphic acid and corosolic acid. |
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| Many of us first experienced thin-layer chromatography in junior-high-school science labs. |
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| Use of thin-layer chromatography for detection of 11-nor-9-carboxy-delta 9-tetrahydrocannabinol in urine. |
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| The active ingredient, salvinorin A, is typically measured by liquid chromatography at many reference laboratories. |
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| Measurement of low-density lipoprotein particle size by high-performance gel-filtration chromatography. |
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| Mannose-binding C-type lactin was isolated by affinity chromatography from sea lamprey plasma. |
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| When scientists bring up the subject of liquid chromatography, complexity and high cost are two things that immediately come to the mind. |
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| To overcome this problem, a simple technique, based on paper chromatography, was developed and later modified. |
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| Methyl esters were prepared using diazomethane in diethyl ether, and analysed by gas chromatography. |
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| The purified extract was methylated using diazomethane and analysed using high-resolution gas chromatography. |
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| Determination of hesperetin, cinnamic acid and nicotinic acid in propolis with micellar electrokinetic capillary chromatography. |
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| The thin layer chromatography technique with eluant shows the presence of only one product and characteristic tests of odor and melting point. |
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| Analytical methods include titration, liquid chromatography, gas chromatography, ion chromatography, capillary electrophoresis and potentiometry. |
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| Total plasma homocysteine level was determined by the high-performance liquid chromatography method with fluorescence detection. |
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| Simultaneous measurement of phenobarbital, phenytoin, primidone, ethosuximide, and carbamazepine in serum by high-pressure liquid chromatography. |
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| Ion exchange chromatography takes advantage of several aspects unique to antisense drugs. |
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| Usually, reversed and ion exchange chromatography are performed in aqueous media with small to large amounts of polar organic solvents. |
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| In addition, we performed ESI-MS on various chromatographic fractions obtained using both affinity and ion exchange chromatography. |
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| The subject of the public contract is an instrument for determining the surface energy by inverse gas chromatography. |
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| Quantitative measurement of thalidomide by gas-liquid chromatography. |
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| Rapid simultaneous determination of lidocaine, bupivacaine, and their two main metabolites using capillary gas-liquid chromatography with nitrogen phosphorus detector. |
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| A simple method for detection and analysis of carcinogenic nitrofuran compounds and their metabolites by combining chromatography and spot mutation tests. |
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| The concentrated eluants were then fractionated by liquid chromatography using a semi-preparative aminopropyl-silane column with hexane as the mobile phase. |
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| The program uses a visual inspection, dissolvability criteria and thin-layer chromatography, which identifies compounds in a mixture and determines purity. |
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| The solution of monose and cellulose was used for the analysis of anionic structure of phosphates using paper chromatography according to a procedure described by Karl-Kroupa. |
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| Simultaneous determination of retinol, tocopherols, carotenes and lycopene in plasma by means of high-performance liquid chromatography on reversed phase. |
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| The thermodynamic parameters, including enthalpies and free energies of adsorption, were measured using inverse gas chromatography under dry conditions. |
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| Capillary electrophoresis is a technique which has nothing to see with chromatography, but which is based on the mobility of ions in an electric field. |
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| Three commonly used strategies for these types of analysis include the yeast two-hybrid screens, affinity chromatography, and immunoprecipitation approaches. |
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| We offer solutions for laboratory and online measurements based on techniques like titration, ion chromatography, colormetric, ion selective electrode and polarography. |
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| Gas chromatography is a separatory method that can detect volatile components of a mixture as a function of time that compounds take to travel through the system. |
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| Paper chromatography was done using same solvent system on whatman no. |
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| Comprehensive profiling of phenolics from strawberries was previously reported using high-performance liquid chromatography with mass spectrometry detection. |
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| This study describes methods for analysis of acetone soluble wood extractives using a combination of high-resolution and low-resolution gas chromatography. |
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| High-performance liquid chromatography with electrochemical detection for the determination of levodopa, catecholamines and their metabolites in rat brain dialysates. |
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| After expression, we purified MutM using polyethleneimine precipitation, ammonium sulfate precipitation, cation exchange chromatography, and size exclusion chromatography. |
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| A polyhistidine-tagged recombinant nucleocapsid protein of SNV was expressed in Saccharomyces cerevisiae and purified by nickel chelation chromatography. |
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| Thermo Fisher Scientific have announced that its high-resolution gas chromatography mass spectrometry solutions are suitable for dioxin analysis in foods. |
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