By James S. Fritz, Douglas T. Gjerde
This all-new variation of the hugely winning first variation features a wealth of updated info in this significant analytical procedure. Ion-exchange, ion-exclusion, and ion-pair chromatography are taken care of including their detection equipment, and a dialogue of quantitative research can be given. the whole variety of software chances of this method is defined and illustrated with various chromatograms. designated chapters are featured on purposes in environmental research, medical chemistry in addition to within the foodstuff and beverage undefined. From studies of prior versions: This quantity might be hugely suggested to either the skilled consumer and the newcomer within the box of ion chromatography. Zeitschrift fuer Wasser- und Abwasserforschung each person who's actively facing ion chromatography can't have enough money to overlook this e-book. Laborpraxis This booklet is a precious relief to all scientists wishing to paintings optimistically with those various equipment, in addition to practitioners who hire those concepts on a day by day foundation.
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Additional info for Ion Chromatography
O. Columns packed with the AN1 resin have given excellent separations of common anions using a variety of eluents. Polymeric resins from Hamilton have been used extensively for anion chromatography. Their PS-DVB anex resins contain trimethylammonium groups. 1 I mequivig. 35 meyuiv/g. All of these have an average pore size of 100 A. Good separations of anions have been obtained with a variety of eluents . However, these resins are quite hydrophobic. 1 mM sodium thiocyanate to give better peak shapes.
090 mequivig. 092 mequivig. 096 mequiv/g. Virtually all anion exchange separations have been carried out with resins containing a single nitrogen atom in each exchange group, either a quaternary ammonium group (-N+R3) or a protonated amine group (-N+HR3). A novel resin has been described, containing three nitrogen atoms in each functional group [lo]. A chloromethylated PS-DVB resin was reacted with diethylenetriamine to give a functional group of structure a, or b, or a mixture of the two. CH2 - NH - CH;!
The tertiary carbonyl structure of pivalic acid is one of the most stable and least hydrolyzable esters known, which allows the HEMA stationary phase to be used with a variety of eluents in the pH range 2-12. The excess hydroxyl groups on the HEMA matrix also increase the hydrophilicity of this material, which will be shown Iater to result in improved peak shapes for poIarizable anions. The strong-base anion exchanger of HEMA, shown in Fig. 2B, is prepared by treating the HEMA precursor with an aqueous solution of trimethylamine.
Ion Chromatography by James S. Fritz, Douglas T. Gjerde