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301.
Mehmet Hakan Morcali Asli Baysal 《International journal of environmental analytical chemistry》2013,93(14):1397-1414
ABSTRACTIn the present study, novel bioconjugated sorbents (peptide and oligo-nucleotide on the cobalt aluminate nanomaterials) were used to remove lead through miniaturised process and the concentration of lead was measured by inductively coupled plasma mass spectrometry. For this aim, lead was collected on sorbent in mini tube, and the influences of experimental conditions (e.g. pH of sample, amount of sorbent, concentration of eluent, foreign ions) and retention parameters on the recovery of the lead element were examined. After the optimisation of experimental parameters, a successful separation was obtained at pH 7.5 with high (>95%) quantitative recovery and high precision (<10% relative standard deviation). Using the proposed bioconjugated sorbents, the lead in sea water and tap water samples could be practically and easily removed with 95% confidence level. The detection limits of this method for lead using oligonucleotide and peptide on the cobalt aluminate nanomaterials were 0.14 and 0.12 µg/L (3σ, N = 10) with sample-matched blanks. This method can be widely used as promising and cost-effective nanomaterials to remove lead from water systems. 相似文献
302.
Sara Mahdjoub Muhammet Yildirim Sihem Lakehal Houssem Boulebd Abdelmadjid Debache 《合成通讯》2013,43(18):2366-2381
AbstractA simple and efficient protocol for one-pot three-component synthesis of structurally diverse dialkyl 2-amino-3-cyano-4H-chromen-4-ylphosphonates from the condensation of salicylaldehydes, malononitrile, and trialkyl phosphite using silver nanoparticles as catalyst in ethanol at reflux has been developed. Selected new compounds were evaluated for their antioxidant activity by free radical screening using 2,2-diphenyl-1-picrylhydrazyl (DPPH) method. Among the compounds employed, 5a, 5?b, and 5?h showed promising DPPH radical scavenging activities compared to the experimental standards at low concentration (100?µg/mL) after 24?h incubation. 相似文献
303.
Yildirim O Yilmaz MD Reinhoudt DN Blank DH Rijnders G Huskens J 《Langmuir : the ACS journal of surfaces and colloids》2011,27(16):9890-9894
Alkylphosphate self-assembled monolayers (SAMs) were prepared on Nb-doped SrTiO(3) (Nb-STO) conducting metal oxide substrates. Unlike thiols on gold, the alkylphosphate SAMs on Nb-STO exhibited an electrochemical stability over a wide voltage range from -2 to 2 V. Cyclic voltammetry showed that the SAM modification inhibited the electrochemical activity of the underlying conducting substrate with an efficiency dependent on the chain length. Impedance spectroscopy showed that SAM-modified Nb-STO substrates have a significantly higher resistance than bare substrates. 相似文献
304.
Dikici Tuncay Demirci Selim Tünçay Mehmet Masum Yildirim Bercem Kiran Kaya Nusret 《Journal of Sol-Gel Science and Technology》2021,98(3):637-638
Journal of Sol-Gel Science and Technology - 相似文献
305.
Moscow University Chemistry Bulletin - Erica manipuliflora Salisb. and Erica arborea L. are common species in the seaside areas in Turkey. The aerial parts of Erica manipuliflora and Erica arborea,... 相似文献