Dispersive Solid-phase Microextraction of Lead in Waters and Edible Lettuce and Dill Extracts in the Unified Bioaccessibility Method (UBM) Saliva Solution.

A new thiosemicarbazide-modified, sulfonamide-based poly (styrene) adsorbent (T-CSPS) was prepared starting from the reaction of chlorosulfonated polystyrene and thiosemicarbazide. It was characterized by SEM-EDX, FT-IR, and zeta potential. The T-CSPS was used as an adsorbent for the first time for the dispersive solid-phase microextraction (d-SPµE) and preconcentration of Pb(II) ions from waters and dill and lettuce extracts in the unified bioaccessibility method (UBM) saliva.

Application of inverse gas chromatography in the surface characterization of diethanol amine modified polystyrene based polymer.

In the present work, diethanol amine modified polystyrene based polymer (PVBC-Diethanol amine) was synthesized and characterized, then surface properties of the polymer were examined by inverse gas chromatography method at infinite dilution. The retention diagrams obtained based on the interaction of polar and nonpolar probes with the polymer were drawn over a temperature range from 30 to 55 °C. Through the diagrams, the dispersive component of the surface free energy, g of the polymer surface, and the specific enthalpy of adsorption, D , of probes on the polymer were also calculated.

Effective removal of Cs ions from radioactive wastewater by Melamine-Styrene based Polymer (MSP).

Cesium (Cs) is a major product of uranium fission, which is one of the most existed radionuclides in radioactive wastes. Removal of Cs-137 has a critical role in the decontamination of liquid radioactive waste due to its half-life of 30.17 years.

Investigation of interaction behaviours of cesium and strontium ions with engineering barrier material to prevent leakage to environmental.

This study deals with performance of removal of cesium (Cs) and strontium (Sr) ions from synthetic aqueous solution using amino pyridine sulfone amid resin as a barrier material for nuclear waste storage areas to reduce environmental risk. The effects of adsorbate concentration, temperature and contact time on the efficiencies of the engineering barrier material for Cs and Sr ions were investigated and evaluated. It was found that total adsorption capacity was higher for cesium ions than strontium ions.

Functionalization of gum arabic including glycoprotein and polysaccharides for the removal of boron.

Bio hybrid material supported multifunctional (hydroxyproline with enriched glycoprotein) has been shown to be efficient in chelation with boron and can be used for removal of boron at ppm levels. Gum arabic (GUM) is biodegradable and nontoxic biopolymer. GUM includes GA-GP-GA-glycoprotein and polysaccharides.