Electrostatic theory of ion-pair chromatography. Multi-site occupancy model for modifier and solute adsorption

1993 ◽  
Vol 35 (9-12) ◽  
pp. 527-538 ◽  
Author(s):  
J. Narkiewicz-Michałek
Keyword(s):  
Site Occupancy ◽  
Ion Pair ◽  
Occupancy Model ◽  
Ion Pair Chromatography ◽  
Solute Adsorption ◽  
Electrostatic Theory

Reversed-phase ion-pair chromatography in determination of sinomenine contents in Sinomenium acutum

2010 ◽  
Vol 30 (2) ◽  
pp. 193-195
Author(s):  
Hui WANG ◽  
Qing YE ◽  
Liang ZHAO ◽  
Wen-jun TIAN ◽  
Guo-qing ZHANG
Keyword(s):  
Reversed Phase ◽  
Ion Pair ◽  
Ion Pair Chromatography ◽  
Sinomenium Acutum

Determination of biogenic amines in tomato by ion-pair chromatography coupled to an amine-selective potentiometric detector

2021 ◽  
pp. 138134
Author(s):  
Renato L. Gil ◽  
Célia G. Amorim ◽  
Maria C.B.S.M. Montenegro ◽  
Alberto N. Araújo
Keyword(s):  
Biogenic Amines ◽  
Ion Pair ◽  
Ion Pair Chromatography

scholarly journals The Molecular Nature of the Hydrophilic Sulfur Prepared from Aqueous Sulfide and Sulfite (Selmi Sulfur Sol)

1989 ◽  
Vol 44 (5) ◽  
pp. 526-530 ◽  
Author(s):  
Ralf Steudel ◽  
Thomas Göbel ◽  
Gabriele Holdt
Keyword(s):  
Elemental Sulfur ◽  
Chemical Reactivity ◽  
Dry Weight ◽  
Reversed Phase ◽  
Ion Pair ◽  
Low Ph ◽  
Reversed Phase Hplc ◽  
Ion Pair Chromatography ◽  
Approximate Composition ◽  
Molecular Nature

Hydrophilic sulfur sols prepared by reaction of aqueous sulfide and sulfite at low pH have been studied by chemical analysis, ion-pair chromatography, and reversed-phase HPLC. The approximate composition of the sol is x(NaHSO4/Na2SO4) ·ySn · zNa2SmO6 with n = 6-10 and m = 4-16. The elemental sulfur Sn accounts for 17% and the polythionate sulfur for 10% of the dry weight (sulfate: 18%). On aging of the sol at 20°C the long-chain polythionates decompose to elemental sulfur and tetrathionate as well as pentathionate. The higher chemical reactivity of this sol compared to S8 is explained by the fact that 45% of the zero oxidation state sulfur (S°) are present as non-S8 molecules.

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