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Showing 1-28 of 28 results for "06444" within Papers
A S Krishna Kumar et al.
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 46(13), 1598-1610 (2011-10-28)
The remediation of heavy metals requires the development of efficient adsorbents. Macroporous polystyrene divinyl benzene based resins are known for their excellent surface characteristics for the effective adsorption of metals. In this paper, we propose an effective adsorption procedure for
Aminul Islam et al.
Environmental monitoring and assessment, 175(1-4), 201-212 (2010-05-29)
A selective method has been developed for the determination of trace amount of metal ions after preconcentration on 1-(2-pyridylazo)-2-naphthol loaded Amberlite XAD-4 resin. The chelating resin was characterized on the basis of infra red spectra, thermal and chemical stability, and
Mohammad Zubair Alam et al.
Ecotoxicology and environmental safety, 73(7), 1620-1628 (2010-08-06)
The tannery effluents at Kanpur (India) have been in use for irrigation since last many years, polluting soil directly while ground water and food crops indirectly. Gas chromatography-mass spectrometric analysis of the test samples revealed the presence of organic compounds
Aminul Islam et al.
Talanta, 81(4-5), 1772-1780 (2010-05-06)
A stable extractor of metal ions was synthesized through azo linking of p-hydroxybenzoic acid with Amberlite XAD-4 and was characterized by elemental analyses, infrared spectral and thermal studies. Its water regain value and hydrogen ion capacity were found to be
Sevgi Kocaoba et al.
Bioresource technology, 102(17), 8035-8039 (2011-07-09)
The present work proposes the use of Pleurotus ostreatus immobilized on Amberlite XAD-4 as new biosorbent in trace metal determination. The effects of experimental parameters, such as "pH and flow rate of sample solution, amount of solid phase, eluent type
Aminul Islam et al.
Environmental monitoring and assessment, 185(3), 2691-2704 (2012-07-20)
Nascent Amberlite XAD-4 has been used as the polymeric support for the synthesis of a stable extractor of metal ions, by incorporating phthalic acid through azo bridging. Elemental analyses and infra-red spectral and thermal studies were carried out for its
Berrin Topuz et al.
Environmental monitoring and assessment, 173(1-4), 709-722 (2010-03-20)
A new chelating resin, Amberlite XAD-4 loaded with N,N-bis(salicylidene)cyclohexanediamine (SCHD), was synthesized and characterized. The resin Amberlite XAD-4-SCHD was used for selective separation, preconcentration, and determination of Cu(II), Pb(II), and Ni(II) ions in water samples by flame atomic absorption spectrometry
Imam Bakhsh Solangi et al.
Journal of hazardous materials, 171(1-3), 815-819 (2009-07-18)
Fluoride in drinking water above permissible level is responsible for human being affected by skeletal fluorosis. In this study, Amberlite XAD-4 has been modified by introducing amino group onto the aromatic ring for its application in fluoride remediation. Characterization of
Ariane Kahnt et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 879(17-18), 1402-1411 (2011-03-18)
Two denuder sampling techniques have been compared for the analysis of gaseous carbonyl compounds. One type of denuder was coated with XAD-4 resin and the other type of denuder was coated with XAD-4 and 2,4-dinitrophenylhydrazine (DNPH) to derivatise gaseous carbonyl
Valfredo Azevedo Lemos et al.
Environmental monitoring and assessment, 171(1-4), 163-169 (2009-12-17)
Amberlite XAD-4 resin functionalized with β-nitroso-α-naphthol was applied to an online system for the preconcentration and determination of uranium. U (VI) ions were retained on the minicolumn at an appropriate pH and then desorbed with acid solution. The amount of
Shabnam Shahida et al.
Environmental monitoring and assessment, 185(2), 1613-1626 (2012-05-15)
In this work, spectrophotometer was used as a detector for the determination of uranium from water, biological, and ore samples with a flow injection system coupled with solid phase extraction. In order to promote the online preconcentration of uranium, a
Imdadullah Qureshi et al.
Journal of hazardous materials, 164(2-3), 675-682 (2008-10-03)
The article describes a convenient synthesis and Cr(VI) extraction efficiency of a novel p-tert-butylcalix[8]areneoctamide impregnated Amberlite (XAD-4) resin. Using p-tert-butylcalix[8]arene macrocyclic building block, two strategies have been developed; i.e., derivatization of p-tert-butylcalix[8]arene framework with sophisticated ionophoric groups having efficiency to
Ali Reza FeizBakhsh et al.
Water environment research : a research publication of the Water Environment Federation, 81(5), 532-539 (2009-05-29)
A new chelating resin is prepared by coupling Amberlite XAD-4 (Serva, Heidelberg, New York) with m-phenylendiamine through an azo spacer, characterized (by elemental analysis, infrared, and thermogravimetric analysis) and studied for preconcentrating nickel(II), cobalt(II), zinc(II), copper(II), and chromium(III) using flame
Imam Bakhsh Solangi et al.
Journal of hazardous materials, 176(1-3), 186-192 (2009-12-03)
The article describes a convenient method for the modification of Amberlite XAD-4 resin by introducing thio-urea binding sites onto the aromatic rings. The modified (ATU) resin has been employed for the quantitative sorption of fluoride ions in batch as well
Xiaowei Zeng et al.
Journal of colloid and interface science, 385(1), 166-173 (2012-08-11)
A novel of hydrophilic and polar N-vinylpyrrolidone modified post-crosslinked resin was synthesized and the adsorption behaviors toward puerarin from aqueous solution were investigated. The post-crosslinked adsorbent PNVP-DVBpc was prepared by Friedel-Crafts reaction of residual double bonds without external crosslinking agent.
Ayşegül Efendioğlu et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 26(12), 1283-1288 (2010-12-16)
A new polystyrene divinylbenzene-based chelating resin was synthesized by functionalizing Amberlite XAD-4 with N,N'-bis(o-vanillinidene)ethylenediamine. This resin was capable of preconcentrating Cu(II), Cd(II) and Pb(II) in water samples prior to FAAS determination. Various parameters, such as the pH, eluent type and
Analysis of mycotoxin fumonisins in corn products by high-performance liquid chromatography coupled with evaporative light scattering detection.
Wang J, et al.
Food Chemistry, 107(2), 970-976 (2008)
Muhammad Afzal Kamboh et al.
Journal of hazardous materials, 172(1), 234-239 (2009-07-31)
The present study describes a novel synthetic method for the immobilization of calix[4]arene (II) onto the surface of modified Amberlite XAD-4 resin (4), which does not require the derivatization of calixarene moiety. The novel calix[4]arene based resin (C4 resin) 5
Antoine P Trzcinski et al.
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 46(13), 1539-1548 (2011-10-14)
In this study, various methods were compared to reduce the Chemical Oxygen Demand (COD) content of stabilised leachate from a Submerged Anaerobic Membrane Bioreactor (SAMBR). It was found that Powdered Activated Carbon (PAC) resulted in greater COD removals (84 %)
Derya Kara et al.
Journal of hazardous materials, 165(1-3), 1165-1169 (2008-12-17)
A matrix separation and analyte preconcentration system using Amberlite XAD copolymer resins functionalized by Schiff base reactions coupled with atomic spectrometry has been developed. Three different functionalized Amberlite XAD resins were synthesized using 4-phenylthiosemicarbazide, 2,3-dihydroxybenzaldehyde and 2-thiophenecarboxaldehyde as reagents. These
Freya Goodsir et al.
Marine pollution bulletin, 72(1), 250-256 (2013-05-29)
This paper demonstrates an approach to reducing acute toxicity in marine sediments using adsorbent parcels. Acute toxicity tests were carried using the marine amphipod Corophium volutator. Marine sediments were spiked with two know contaminants tributyltin and naphthalene and then treated
Chao Huang et al.
New biotechnology, 29(3), 372-378 (2011-04-05)
Oleaginous yeast Trichosporon fermentans was proved to be able to use sulphuric acid-treated sugar cane bagasse hydrolysate as substrate to grow and accumulate lipid. Activated charcoal was shown as effective as the more expensive resin Amberlite XAD-4 for removing the
Corjan van den Berg et al.
Biotechnology and bioengineering, 100(3), 466-472 (2008-04-29)
The sustainable production of fine/bulk chemicals is often hampered by product toxicity and inhibition to the producing micro-organisms. Consequently, the product must be removed from the micro-organisms' environment. To achieve this, so-called solvent-impregnated resins (SIRs) as well as commercial resins
Passively capturing air data on more volatile chemicals.
Kellyn Betts
Environmental science & technology, 43(4), 978-978 (2009-03-27)
Chunlian He et al.
Journal of colloid and interface science, 342(2), 462-466 (2009-11-11)
A hyper-cross-linked polymeric adsorbent functionalized with multiple phenolic hydroxyl groups HJ-03 was prepared in this study and its adsorptive characteristics for p-nitroaniline from aqueous solution were studied as compared with Amberlite XAD-4. The adsorption of p-nitroaniline was sensitive to the
P A M Freitas et al.
Journal of colloid and interface science, 323(1), 1-5 (2008-05-10)
The adsorption of DPKSH onto Amberlite XAD-2 (styrene resin) and XAD-7 (acrylic ester resin) has been investigated, at (25+/-1) degrees C and pH 4.7. The experimental equilibrium data were fitted to the Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) models. These three
A S Ghatbandhe et al.
Journal of environmental science & engineering, 50(2), 163-168 (2009-03-20)
Adsorption equilibrium, kinetics and thermodynamics of 2,4-dichlorophenol (2,4-DCP), one of the most commonly used chlorophenol, onto bituminous coal based Filtrasorb-400 grade granular activated carbon, were studied in aqueous solution in a batch system with respect to temperature. Uptake capacity of
A Garrido Frenich et al.
Journal of chromatography. A, 869(1-2), 497-504 (2000-03-17)
A method is described for analysing and sampling imidacloprid and its metabolite 6-chloronicotinic acid in greenhouse air by high-performance liquid chromatography (HPLC) with diode-array detection (DAD). The trapping efficiency of two solid sorbents, Amberlite XAD-2 and Amberlite XAD-4 and the
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