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Ion-exchange solid-phase

Water solubility, dissociation constant(s) and n-octanol/water partition coefficients allow one to predict how an analyte may behave on normal-phase (NP), reversed-phase (RP), or ion-exchange solid-phase extraction (SPE) for sample enrichment and cleanup. [Pg.53]

Ion-exchange solid-phase extractions are used for ionic compounds. The pH of the extracts is adjusted to ionize the target analytes so that they are preferentially retained by the stationary bonded phase. Selection of the bonded phase depends on the pK or pA b of the target analytes. Sample cleanup using ion exchange is highly selective and can separate polar ionic compounds that are difficult to extract by the liquid-liquid partition technique. [Pg.877]

Mallat, E. and Barcelo, D., Analysis and degradation study of glyphosate and of aminomethylphosphonic in natural waters by means of polymeric and ion-exchange solid-phase extraction columns followed by ion chromatography-post-column derivatization with fluorescence detection, /. Chromatogr A, 823, 129, 1998. [Pg.312]

Ion exchange Solid-phase extraction Size-exclusion Multidimensional chromatography... [Pg.428]

DNA purification Solvent extraction and precipitation, gel electrophoresis, chromatography size exclusion, ion exchange, solid-phase extraction, SPRI, affinity purification... [Pg.332]

The over-bars denote the ion exchanger (solid phase). [Pg.267]

GENERAL METHOD FOR ION-EXCHANGE SOLID-PHASE EXTRACTION... [Pg.147]

General Method for Ion-Exchange Solid-Phase Extraction 147... [Pg.354]

A new selective enrichment technique was investigated for the sample preparation for GC-MS analysis of 16 acidic herbicides in water. By using a dynamic ion-exchange solid-phase extraction (DIE-SPE) combined with reverse-phase SPE, interference by humic substances could be reduced and most of the acidic herbicides were extracted with recoveries above 70%. ... [Pg.988]

Li, N. and Lee, H. K., Sample preparation based on dynamic ion-exchange solid-phase extraction for GC/MS analysis of acidic herbicides in environmental water. Anal Chem., 72, 3077-3084, 2000. [Pg.1018]

Acid/base partition Acid/base partition Solid phase extraction Acid/base partition Acid/base partition Ion exchange Solid phase extraction... [Pg.209]

Fig. 2. Schematic representation of automated 96-well ion-exchange solid-phase extraction for the removal of anionic components snch as carboxylic acids from crude library samples. Fig. 2. Schematic representation of automated 96-well ion-exchange solid-phase extraction for the removal of anionic components snch as carboxylic acids from crude library samples.
Landis, M. S. The use of mixed-mode ion-exchange solid phase extraction to characterize pharmaceutical drug degradation. J. Pharm. Biomed. Anal. 44 1029-1039, 2007. [Pg.161]

See other pages where Ion-exchange solid-phase is mentioned: [Pg.1078]    [Pg.282]    [Pg.42]    [Pg.75]    [Pg.272]    [Pg.374]    [Pg.123]    [Pg.124]    [Pg.126]    [Pg.128]    [Pg.130]    [Pg.132]    [Pg.134]    [Pg.136]    [Pg.138]    [Pg.140]    [Pg.142]    [Pg.146]    [Pg.148]    [Pg.150]    [Pg.152]    [Pg.154]    [Pg.156]    [Pg.158]    [Pg.354]    [Pg.689]    [Pg.807]    [Pg.892]    [Pg.3]   


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