نتایج جستجو برای: copperii ions

تعداد نتایج: 136584  

Journal: :journal of physical & theoretical chemistry 2013
y. saghapour m. aghaie k. zare

a batch adsorption study was applied to investigate the adsorption of pb2+ ions from aqueous solutionby nanographene (ng).the adsorption percentage of pb2+ions onto ng samples at different initial ph,contact time (tc), adsorbent dosage (mng) and temperature (t) were investigated. the results showedthat ng is an excellent adsorbent for pb2+ions removal from aqueous solutions with an adsorptionpe...

Journal: :journal of physical and theoretical chemistry 0
sahar hafeznezhad department of chemistry, bandar abbas branch, islamic azad university, bandar abbas 7915893144, iran farid moeinpour department of chemistry, bandar abbas branch, islamic azad university, bandar abbas 7915893144, iran

malicorium supported ni0.5zn0.5fe2o4 magnetic nanoparticles were synthesized by a low-cost, simple,and environmentally benign procedure. the adsorbent was characterized by several methods includingx-ray diffraction (xrd), scanning electron microscopy (sem) and fourier transform infraredspectroscopy (ft-ir). then, the potential of malicorium supported ni0.5zn0.5fe2o4 magneticnanoparticles was in...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم انسانی 1389

abstract amino acids are building blocks of proteins, and play a vital role in living beings existence and their functionality. the interaction of these compounds with metal ions is of great importance to biochemists, and chemists, because their functions can be utilized as a model in understanding enzymes mechanism for transport of metal ions to tissues. among twenty essential amino acids w...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1389

fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...

Journal: :مجله بین المللی علوم آزمایشگاهی 0
mohammad aberumand morad rostami sareh aberumand masih namjoonia mozhgan khalafian alireza palangi

backgrounds and aims: the purpose of this study was to examine the effects of potassium, sodium and zinc metal ions on ammonium sulfate fraction of acid phosphatase activity of orange fruit. materials and methods: acid phosphatase was extracted and purified from orange fruit and then various samples as well as a control sample were prepared in vitro. in addition to substrates, ions of potassium...

Journal: :journal of chemical health risks 0
soheil sobhanardakani department of the environment, college of basic sciences, hamedan branch, islamic azad university, hamedan, iran raziyeh zandipak young researchers & elite club, hamedan branch, islamic azad university, hamedan, iran mohadeseh bonyadi department of fisheries, college of agriculture & natural resources, university of tehran, karaj, iran hassan parvizimosaed young researchers & elite club, hamedan branch, islamic azad university, hamedan, iran mehran moslemi department of fisheries, jouybar branch, islamic azad university, jouybar, iran mahsa tahergorabi tahergorabi school of public health, kerman university of medical sciences, kerman, iran

in this research, chitosan was used for the removal of cr (vi) ions from aqueous solution. the effect of parameters like solution ph, initial cr (vi) concentration, agitation time, amount of adsorbent and agitation speed on the adsorption process was studied. the experimental equilibrium data were analyzed by using various models such as langmuir and freundlich. freundlich isotherm model fitted...

Journal: :international journal of environmental research 2012
m.n. manju p. resmi t.r. gireesh kumar c.s. ratheesh kumar r. rahul

water samples were collected from five selected mangrove ecosystems along kerala coast, north of cochin, on seasonal basis and analysed for various hydrographic parameters. to explain spatiotemporalvariations and the processes controlling their distribution, anova (two factor without replication),correlation and principal component analysis were carried out. concentration of total nitrogen vari...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2000
mohammad reza yaftian morteza vahedpoor michel burgard dominique matt

the solvent extraction of rare earth metal ions from nitrate solutions by 5.11.17.23-tetra-tert-butyl-25,27-bis(diethylcarbamoylmethoxy)-26,28-dihydroxycalix[4]arene (l) in 1,2-dichloroethane has been investigated. the alalysis of the extraction equilibrium obtained from a mixture of la3+, eu3+, er3+ and y3+ revealed that the extracted species have a 1:1 metal/ligand ratio. the intra-group sepa...

Journal: :journal of advanced materials and processing 0
hadi baseri damghan university, damghan, iran saeed tizro damghan university, damghan. iran

co-precipitation procedure was applied in order to obtain different kinds of magnetic nanoadsobents for the removal of pb(ii) and cu(ii) toxic metal ions from wastewater samples. prepared nanoadsorbents were characterized by fourier transform infrared spectroscopy (ft-ir), x-ray diffractometer (xrd), scanning electron microscopy (sem) and thermogravimetric analysis (tga). the average sizes of t...

Journal: :journal of rangeland science 2016
abolfaz ranjbar-fordoei reza dehghani-bidgoli

salinity is one of major stresses which can severely limit plant production, especially in the arid and semi-arid regions. the present study was carried out to evaluate the impact of salinity stress on some physio-biochemical parameters in nitre bush plants (nitraria schoberi). thus, an experiment was carried out under natural conditions and salinity stress was induced by a combination of diffe...

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