column chromatography वाक्य
उदाहरण वाक्य
मोबाइल
- Gas chromatography is in principle similar to column chromatography ( as well as other forms of chromatography, such as function of the vapor pressure of the gas.
- Resibufogenin can be eluted out with silica gel column chromatography, using a 5 : 1 ratio of cyclohexane to acetone for the solvent in the mobile phase.
- In comparison to column chromatography, flows and total solvent usage can in most countercurrent chromatography separations may be reduced by half and even up to a tenth.
- By column chromatography on regular silica gel with a hexane / ethyl acetate eluent ( 5 : 1 ), a 66.6 % polar eluent is selected.
- Where classical column chromatography uses a solid phase made by a packed bed, EBA uses particles in a fluidized state, ideally expanded by a factor of 2.
- Ginkolides "'A-C "'were isolated from a large scale methanolic extraction followed by liquid-liquid partitions, column chromatography and repeated crystallizations.
- In this method Merrifield resin is modified as a cyclopentadienyl resin and used as a solid phase against a mobile phase containing the complex mixture in a column chromatography operation.
- In 1944 at the ETH, Prelog managed to separate enantiomers with " asymmetric " trivalent nitrogen by column chromatography at a time when this method was still in its infancy.
- Column chromatography with a hydrophobic stationary phase such as phenyl-sepharose will cause more hydrophobic proteins to travel more slowly, while less hydrophobic ones elute from the column sooner.
- This forms the basis of chiral column chromatography, which can be used on a small scale to allow analysis via Eu ( fod ) 3 and Eu ( hfc ) 3.
- A majority of the reports demonstrated the processes of purifying the as-synthesized CQDs fragments via post-treatment such as filtration, centrifugation, column chromatography and gel-electrophoresis.
- Because the column chromatography has a constant flow of eluted solution passing through the detector at varying concentrations, the detector must plot the concentration of the eluted sample over a course of time.
- Most commercial 99 Mo / 99m Tc generators use column chromatography, in which 99 Mo in the form of water-soluble molybdate, MoO 4 2 " is sodium salt of the pertechnetate.
- The key step in the synthesis was the cyclization of ring C : "'16 "'was treated with SmI 2 to yield totarane diastereomers which were separated by column chromatography.
- Thermally initiated, conrotatory opening of the benzocyclobutene generated the o-quinodimethane, which reacted intermolecularly to give the tetracycline skeleton; the diastereomer shown was then crystallized from methanol after purification by column chromatography.
- Most commercial 99 Mo / 99m Tc generators use column chromatography, in which 99 Mo in the form of molybdate, MoO 4 2 " is adsorbed onto acid alumina ( Al 2 O 3 ).
- In effect this configuration is similar to that used for column chromatography as the extent of reduction increases to 100 % as the solution passes down the tube and the product is completely separated from the starting material.
- For a non high-temperature alternative, perhaps " dissolve " ( or crush ) the sodium in a non-reactive organic solvent and pass it through a sand column chromatography mixture, and collect the appropriate eluent?
- The material was dried for one day, ground to a powder and 5 grams were refluxed in methanol for 4 months to yield 2.5 mg ( 0.049 % ) of cavicularin after column chromatography and preparative TLC.
- Once the plant samples were separated using adsorption chromatography and column chromatography, they were analyzed via mass spectrometry, IR spectroscopy, UV spectroscopy, and gas chromatography, 31-and-34-carbon-long alkane chains were found to be present in the hexane layer of the adsorption chromatography
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