نتایج جستجو برای: liquid chromatography mass spectrometry
تعداد نتایج: 707502 فیلتر نتایج به سال:
The combination of HPLC and mass spectrometry has great promise for the toxicology laboratory. In the past five years, significant progress has been made toward producing a reliable interface for these techniques. Thermospray, liquid ion evaporation, ion-spray, and the particle beam separator are all viable "second generation" approaches with significant advantages and disadvantages. I review t...
A versatile microreactor protocol based on microfluidic droplets has been developed for on-line protein digestion. Proteins separated by liquid chromatography are fractionated in water-in-oil droplets and digested in sequence. The microfluidic reactor acts also as an electrospray ionization emitter for mass spectrometry analysis of the peptides produced in the individual droplets. Each droplet ...
BACKGROUND Coptis chinensis Franch is a traditional Chinese medical herb. OBJECTIVE In this article, ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry was used to rapidly, qualitatively, and comprehensively identify the components in Coptis chinensis Franch. MATERIALS AND METHODS Chromatographic separation was achieved on an Agilent Zorbax RRHD...
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