scholarly journals Reversed-phase liquid-chromatographic mass spectrometric N-glycan analysis of biopharmaceuticals

2013 ◽  
Vol 405 (8) ◽  
pp. 2481-2493 ◽  
Author(s):  
Fabian Higel ◽  
Uwe Demelbauer ◽  
Andreas Seidl ◽  
Wolfgang Friess ◽  
Fritz Sörgel
Keyword(s):  
Reversed Phase ◽  
Mass Spectrometric ◽  
Glycan Analysis ◽  
Phase Liquid ◽  
Liquid Chromatographic ◽  
Chromatographic Mass

scholarly journals Liquid Chromatographic/Mass Spectrometric Determination of Desmedipham and Phenmedipham and Their Metabolites in Soil

2001 ◽  
Vol 84 (5) ◽  
pp. 1407-1412 ◽  
Author(s):  
Daniela Perret ◽  
Alessandra Gentili ◽  
Stefano Marchese ◽  
Aldo Marino ◽  
Federica Bruno
Keyword(s):  
Reversed Phase ◽  
Soil Types ◽  
Liquid Chromatography Mass Spectrometry ◽  
Reversed Phase Liquid Chromatography ◽  
Soil Suspension ◽  
Simple Method ◽  
Phase Liquid ◽  
Liquid Chromatographic ◽  
Chromatographic Mass

Abstract A simple method is described for the simultaneous determination of residues of 2 carbamate herbicides (phenmedipham and desmedipham) and related metabolites (m-aminophenol, aniline, and m-toluidine) in soil. The analytes are extracted from spiked soils with methanol. The solvent/soil suspension is centrifuged, and the supernatant is directly injected, without any further cleanup, into a reversed-phase liquid chromatography/mass spectrometry apparatus equipped with a TurboIonSpray interface. The method was tested on 5 soils having different physicochemical properties. Recoveries from the soil types, spiked over the range of 50–200 ppb, were essentially quantitative for each analyte. The detection limits of the method are ≤25 ng/g.

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