Sorption Isotherms on Ion Exchangers by emf Titrations.

Sorption of Organic Substances by Ion Exchangers of Various Nature

Sorption of biologically active substances by ion exchangers, characteristic features of such substances and their low stability levels are discussed. Main principles of choosing ion exchangers for isolation and purification of organic substances are developed. Investigation of ion exchange with respect to organic substances revealed specific relationships in their sorption and indicated a nece...

Biochemistry " Footprint " titrations yield valid thermodynamic isotherms ( DNase protection /

A central issue in gene regulation is the mechanism, and biological function, of the cooperative binding of regulatory protein ligands to specific sites on DNA. To elucidate the physical-chemical basis of these interactions we have developed a thermodynamically rigorous method for conducting DNase I "footprint" (protection) titration experiments. The intrinsic binding constants and also those f...

Water sorption isotherms of globe artichoke leaves

One third of the artichoke production is used in industrial processes, where up to 70% 85% of the initial raw material is transformed into solid wastes. For an adequate management of these wastes, it is necessary to know their water sorption properties, because physical, chemical and biological changes which occur during their storage depend on water-solid interactions. The objectives of this w...

Investigation of Sorption and Separation of Lanthanides on the Ion Exchangers of Various Types

Theoretical Background Water Vapor Sorption Isotherms

The term sorption is generally used to describe the initial penetration and the dispersal of the permeant molecules into food matrices (Chirife and Iglesias 1978) and, more generally, into all kinds of polymers (Naylor 1989; Tsujita 1992). This term includes adsorption, absorption into microvoids, and cluster formation. When a food matrix is placed in a humid atmosphere, the relationship betwee...