A simple, reliable and rapid method for preconcentration and modification of silica gel with Isopropyl 2-[(isopropoxy carbothioyl)disulfanyl]ethanethioate(IIDE) in order to prepare an effective sorbent for the preconcentration and determination of lead. The sorption capacity of Isopropyl 2[(isopropoxy carbothioyl)disulfanyl]ethanethioate(IIDE)-modified silica-gel (IIDE MS) was 82.34 mg.g  -1 a...

a simple, highly sensitive, accurate and selective method for determination of trace amounts of cu2+ in water samples was reported. in this paper, isopropyl 2-[(isopropoxy carbothioyl)disulfanyl]ethanethioate (iide) in order to prepare an effective sorbent for the preconcentration and determination of cu. the sorption capacity of isopropyl 2-[(isopropoxy carbothioyl)disulfanyl]ethanethioate (ii...

A simple, highly sensitive, accurate and selective method for determination of trace amounts of Cu2+ in water samples was reported. In this paper, Isopropyl 2-[(isopropoxy carbothioyl)disulfanyl]ethanethioate (IIDE) in order to prepare an effective sorbent for the preconcentration and determination of Cu. The sorption capacity of Isopropyl 2-[(isopropoxy carbothioyl)disulfanyl]ethanethioate (II...

A simple, highly sensitive, accurate and selective method for determination of trace amounts of Cu2+ in water samples was reported. In this paper, Isopropyl 2-[(isopropoxy carbothioyl)disulfanyl]ethanethioate (IIDE) in order to prepare an effective sorbent for the preconcentration and determination of Cu. The sorption capacity of Isopropyl 2-[(isopropoxy carbothioyl)disulfanyl]ethanethioate (II...

Background: Organic dyes are used for a wide variety of purposes including their applications in textiles, foods, printing cosmetics and pharmaceuticals. Thus, these are industrially very important and their analysis is always required before putting to particular use. Methods: To develop the extremely efficient thin layer chromatographic system for the resolution of co-existing dyes, the silic...

In this study, a new silica gel based adsorbent was fabricated and its ability in separation and quantification of alkanes mixture was investigated. Silica gel (SiO2) is a polar absorbent which is mainly used to separate polar compounds. Also, the carbon materials such as activated carbon and recently carbon nanotube (CNTs), have been widely used for separation of nonpolar materials. Carbon nan...

This mini-review covers chelating sorbents anchored to silica gel and their analytical applications for the preconcentration, separation and determination of trace metal ions, focussing mainly on the last 20 years. The article summarizes also the experience gathered by our research group in the synthesis and characterization of new modified silica gels "via silanization", and their affinity tow...

A mercury-sensitive chemically modified graphite paste electrode was constructed by incorporating modified silica gel into a conventional graphite paste electrode. The functional group attached to the (3-chloropropyl) silica gel surface was 2-mercaptoimidazole, giving a new product denoted by 3-(2-thioimidazolyl)propyl silica gel, which is able to complex mercury ions. Mercury was chemically ad...

The colloidal dimer particles are templated from sacrificial α-Fe2O3 (hematite) core particles prepared via aging of a condensed Fe(OH)3 gel as described in [1]. In a typical synthesis, 50 mL of FeCl3 (2.0 M) is mixed with 45 mL of NaOH (6.0 M) and 5 mL of the shapemodifier, Na2SO4 (0.6 M), before being placed in an oven set at 100°C for 8 days. To make the nonmagnetic particles investigated in...

Three samples taken from a silica gel Hypersil were hydrothermally treated, washed and dried under different conditions. The portions the obtained heated over temperature range of 300 850 °C for 16 h. Surface area pore volume all treated respectively determined by nitrogen adsorption data at 77 K mercury porosimetry. volumetric flow rate permeability isopropyl alcohol on columns filled with pre...