Sorption of four s-triazine herbicides on natural zeolite and clay mineral materials with microporosity

Gas Sorption in Clay Mineral Systems

-Sorption isotherms for four gases (N2, A, Kr and C O 2 ) , commonly used in specific surface area and pore structure measurements, have been accurately determined on a number of clay mineral and oxide systems. Specific surface areas obtained by application of the BET theory to these isotherms illustrate the extent to which the apparent cross-sectional areas for these sorbed gases vary with sur...

Sorption of trivalent actinides on smectite rich natural clay

Competitive sorption-desorption behavior of triazine herbicides with plant cuticular fractions.

Sorption interactions of plant cuticular matter with organic compounds are not yet fully understood. The objective of this study was to examine the competitive sorption-desorption interactions of the triazine herbicides (atrazine and ametryn) with cuticular fractions isolated from tomato fruits and leaves of Agave americana. The 13C NMR data suggest a rubber-like nature for the cutin. This biop...

The sorption behavior of CS ion on clay minerals and zeolite in radioactive waste management: sorption kinetics and thermodynamics

In this work, Cs ion sorption on some clays and zeolite were investigated. Cs was used as a tracer. Activities were measured with a NaI crystal gamma counter. The particle size distribution was determined by a laser sizer. Surface area of the particles were determined by BET (Brunauer, Emmett and Teller method). Structure analysis was made by using X-ray diffraction. The chemical compositions o...

Prediction of s-triazine components lipophilicity of total herbicides

A liquid chromatography method has been developed and validated for the determination of mathematical models for prediction of the lipophilicity of s-triazine compounds. Correlation between retention factors, RM 0 , of several s-triazine derivatives and their physico-chemical and structural properties has been studied by TLC on silica gel impregnated with paraffin oil. The research in this pape...