Elution of Alkaloids from Cation Exchangers.

Tobermorites: a new family of cation exchangers.

Tobermorites have cation-exchange and selectivity properties intermediate between those of clay minerals and zeolites. Aluminum-substituted tobermorites in particular show high selectivity for cesium. This new group of cation exchangers may find applications in catalysis and in nuclear and hazardous waste disposal.

The chromatographic behaviour of cytochrome c on cation exchangers.

Spectroscopy and Chemical Studies of Cation Exchangers Prepared from Corn Cobs

A series of ion exchangers was prepared from corn cobs. Phosphate, sulfate, phosphosulfonate, and carboxylic groups were incorporated onto the corn cobs. The magnitude of functional groups incorporated onto corn cobs, as well as of the crosslinking, was taken as a measure of reactivity of the produced ion exchanger. The effect of treatment of corn cobs with different concentrations of sodium hy...

Alkali cation exchangers: roles in cellular homeostasis and stress tolerance.

Uptake and translocation of cations play essential roles in plant nutrition, signal transduction, growth, and development. Among them, potassium (K+) and sodium (Na+) have been the focus of numerous physiological studies because K+ is an essential macronutrient and the most abundant inorganic cation in plant cells, whereas Na+ toxicity is a principal component of the deleterious effects associa...

Cation and Anion Exchangers from Nanofibrous Polystyrene for Fast Water Treatment

The main goal of this study was to prepare and characterize ion exchangers on nanofibrous polystyrene matrix. Starting nanofibers were sulfonated and crosslinked at the same time by sulfuric acid. Strongly acidic cation exchanger was obtained in such a way. Anion exchanger was prepared by reaction of ethylene diamine with sulfochlorides on nanofibers acquired from sulfogroups. The polymer matri...