Methods providing control of the selectivity of a coupled column were compared. The method of vacuum barochromatography has been developed. This method allows the selectivity of a coupled column to be controlled over a broad range of the Rohrschneider scale using medium carrier-gas pressures. The ...
Why is sand and magnesium sulphate added in the chromatography of the leaf? Why is the lactic acid test done when sepsis is suspected? What is the purpose of acid workup in the Grignard reaction? What are some potential problems with the Negative Stain? Why is water, rather than alcohol ...
Question: When do you use SDS-PAGE, column chromatography, or immunoprecipitation? How do you know which one to use when testing proteins? Molecular biology Most life-sciences laboratories utilize molecular biology techniques, although not all will be use...
OPTIMIZATION OF ELECTRON-CAPTURE DETECTOR WHEN USING PACKED-COLUMN SUPERCRITICAL FLUID CHROMATOGRAPHY WITH MODIFIED CARBON DIOXIDE[J].Journal of chromatography, A: Including electrophoresis and other separation methods 1996,2(2).Strode III JTB, Taylor LT. Optimization of electron-capture detector when ...
Methods: To perform antifungal susceptibility testing (AFST) by CLSI microbroth dilution method, a reversed-phase high- performance liquid chromatography (RP-HPLC) purified lipopeptide of 1071.4 Da from a wild-type soil isolate Bacillus subtilis was used and compared with the standard allylamine ...
Systematic Studies on Column Ruggedness when Separating Weak Acids Using Reversed-Phase Liquid ChromatographyRuggedness of three reversed-phase C18 columns of different brands and with different sizes was investigated for the separation of an acidic sample containing 4-hydroxyben- zoic acid, acetylsalicylic...
When the thin-film deodorization column is used in a continuous system, the efficiency of contacting is further lower than in the batch system, and the amount of an inert gas such as water vapor to be blown is increased, and the size of the apparatus is also increased, and thus the ...
Ion chromatography followed estab- lished standard procedures53,54. Pb and most Sr isotope analyses were performed on a Finnigan MAT 262 RPQ2 þ while Nd and the remaining Sr isotope analyses were determined on a Thermo Fisher TRITON thermal ionization mass spectrometer. Nd and Sr ratios were...
A powerful method for analyzing EO or derivatized nonvolatile molecules at lower concentrations and providing a great depth of information is coupling chromatography to MS via gas chromatography-mass spectrometry (GC–MS). This method has higher sensitivity, selectivity, and structural determination capabi...
In proteomics, the use of liquid-chromatography systems coupled to mass spectrometers (LC-MS) notably poses major challenges in terms of long-term performance and influence by outside factors.12 Similarly, there can be differences introduced, notably during protein digestion,13 peptide fractionation ...