The chemical pollution of water resources is a major challenge facing the humanity in this century. Pharmaceuticals and personal care products (PPCPs) are group emerging environmental pollutants distinguished by their bioactivity high solubility. They may also cause health complications to humans living organisms. enter environment, mainly via wastewater can eventually reach surface ground water. Despite this, PPCPs received less attention as than other (e.g. heavy metals pesticides)....

In the present era, polymeric pipes have emerged as replacement for metallic alternatives in constructing water distribution networks within cities or homes, due to their notable flexibility and durability. Nevertheless, there been increased concerns over safety of consuming that has come into contact with materials. This issue arises from possible leaching organic contaminants, either plastic deterioration biofilms typically develop pipes. These may act a source disinfection byproducts...

The shortage of renewable water resources in Saudi Arabian makes groundwater a major stock basis many provinces. Therefore, regular monitoring is essential. This study was conducted to assess quality the Odqus area, Arabia, for domestic and irrigation uses. Water samples were collected from 51 wells July August 2013, analyzed pH, levels total dissolved solids (TDS), hardness (TH), content anions cations. results indicated that NO 3 , 2 Br F all below local drinking guideline: SASO (Saudi...

The widespread of plastic piping applications in water distribution systems and home plumbing network has brought many health concern dues to the quality deterioration from occurrence leachable organic pollutants into tape water.Among these pollutants, volatile molecules are believed migrate easily popular polyethylene piping.This study aimed screen compounds pipes comprising system residential homes located Medina Al-Munawarah city.For this purpose, a total 28 samples were collected...

Solid phase extraction (SPE) using chelating resins has been established as a convenient technique for samples pretreatment prior to trace metal analysis from complex matrices. Oxine agents (e.g., 8-Hydroxyquinoline (8-HQ)) are popular moieties in the synthesis of resins, due their characteristic coordination chemistry. So far most reported silica-oxine chelators encompasses single oxine molecule per spacer arm. In this work, two 8-HQ ligands have covalently attached onto silica surface...

Water pipe materials can have significant effect on tap water quality.Recent reports evidenced that plastic pipes used to construct distribution network in homes leach potential amounts of harmful organic contaminants into water.In this work, the migration phenolic and volatile compounds has been investigated.For purpose, 30 samples were collected from within Al Medina Munawarah municipal residential area analyzed for existence 2-butanone, 1,1,1-trichloroethane, carbon tetrachloride,...

The past few years witnessed the emergence of aryldiazonium salts as versatile coupling agents for functionalization carbon and other substrates. Although approach has demonstrated extensive applications in many fields, its use synthesis chelating resins not been explored. In this work, concept exploited to develop an ecofriendly synthetic method based chelators. Herein, p-nitroanline salt was generated (in situ) presence hypophosphorous acid covalently grafted onto activated (AC) allow...

This work reports a facile and inexpensive preparation of porous silica monoliths<italic>via</italic>an<italic>in situ</italic>sol–gel method using potassium silicate precursors in the presence porosity controlling drying regulatory additives.

Microfluidics minimize the amounts of reagents and generate less waste. While microdevices are commonly single-sided, producing a substrate with microchannels on multiple surfaces would increase their usefulness. Herein, polymethymethacrylate incorporating microchannel structures two sides was sandwiched between polydimethylsiloxane sheets to create multi-analysis device, which used for spectrophotometric analysis ferrous ion (Fe(2+)) ferric (Fe(3+)), by utilizing colorimetric detection. To...

This work presents a novel hydrothermally aided sol-gel method for preparation of mesoporous silica nanoparticles (MSNs) with narrow particle size distribution and varied pore sizes. The was carried out in alkaline media presence polyethylene glycol (PEG) cetyltrimethylammonium chloride (CTAC) as dual templates permitted the synthesis spherical high surface area (1011.42 m2/g). MSN materials were characterized by FTIR, Thermogravimetric (TG), Nitrogen adsorption desorption Field emission...

A downscaled solid phase (SPE) device applicable for sample preparation prior to ICP-MS monitoring, have been constructed making use of the lab on a chip concept. Standard photolithography and wet chemical etching were used fabricate glass microfluidic devices accommodating three microchannels, each them incorporating defined section that could be packed with SPE materials; selective chelating resin. The was interfaced instrument throughout low flow rate concentric nebuliser using Teflon...

Drinking water is found contaminated with various volatile organic compounds (VOCs) at supply end.Chlorinated polyvinyl chloride (CPVC) and (PVC) pipes used to drinking may be the possible source of contamination.In this study, leaching ability VOCs from CPVC PVC was tested under controlled experimental conditions correlated real samples.For design, nine polymeric plastics in Saudi Arabia were purchased locally incubated pure for study.A total 58 tap samples collected buildings villas within...

ABSTRACT A simple miniaturized system was fabricated in general laboratory from polydimethylsiloxane (PDMS) according to a prototype casting and molding process permitting the construction of three-dimensional (3D) microchannel (100 µm i.d.) with T-type network, together an integrated optical sensor for on chip detection. The device has been successfully applied as green chemistry-compatible analytical determination zinc (II) pharmaceutical samples taking advantage colorimetric reaction...

In this work, Amberlite IRC-50 cation exchanger has been chemically functionalized with 8-hydroxyquinoline chelator to enhance its sorption capacity and selectivity toward transition metals. The resin characterized X-ray photoelectron spectroscopy (XPS), attenuated total reflection infrared (ATR-IR), scanning electron microscope (SEM), elemental analysis. Under optimum conditions, the values for Mn (II), Cu(II), Co(II) Ni(II) ions have increased by 50% or more in comparison plain resin....

The determination of trace heavy metals in environmental samples requires reliable sample preparation method to improve instrument detectability or minimize matrices effect. Solid phase extraction (SPE) using metal chelators is an attractive approach for the selective from aqueous media various applications. In this work, chelating resin was prepared by chemical attachment moiety, 4-(2-pyridylazo)resorcinol(PAR) onto silica gel eco-friendly transformation. successfulness modification...

Chelating resins based on immobilised oxines are attractive solid-phase extraction (SPE) materials&#x0D; in the analysis of trace metals from environmental samples. The most common immobilisation&#x0D; procedure for bonding to silica supports is time-consuming and incompatible with “green&#x0D; chemistry” regulations. In this work, a rapid, environmentally friendly chemical transformation to&#x0D; attach (i.e. 8-hydroxyquinoline) surfaces reported. chelating resin produced by&#x0D; described...