نتایج جستجو برای: flame atomic absorption spectroscopy
تعداد نتایج: 372101 فیلتر نتایج به سال:
Mahboobeh Manoochehri*, Homayon Ahmad Panahi, Meghdad Karimi Department of Chemistry, Islamic Azad University, Tehran Central Branch, Tehran, Iran. (Received 10 May 2012; Final version received 23 Nov. 2012) Abstract A new Pb(II) imprinted mercapto functionalized Montmorillonite was synthesize by an easy one step reaction by combining a surface imprinting technique for selective phase extractio...
The main scope of this paper is first of all to verify the efficiency of the flame atomic absorption spectroscopy (FAAS) method for analysis of some trace elements in extracts of fractionation analysis of the gravitation dust sediments. Investigation was oriented to the analysis of some markedly toxic trace elements in the extracts of gravitation dust sediments as well as on efficiency evaluati...
The serum concentration of cadmium (Cd), lead (Pb), calcium (Ca) and iron (Fe) in 30 schizophrenic patients and 30 normal healthy subjects were analyzed by flame atomic absorption spectroscopy. The concentrations of Cd, Pb and Ca in schizophrenic disorder patients was not increased significantly (P > 0.05) compared to that of the cohort controls. But the concentration of Fe in schizophrenic pat...
Zinc concentrations in CSF were determined with flame atomic absorption spectrophotometry in patients assumed to have a normal CSF. No sex difference was found. There was a correlation between zinc, protein and albumin concentrations in CSF. In patients with increased protein levels in CSF or subarachnoid haemorrhage increased zinc concentrations were found.
New mixed ligand complexes have been prepared by the reaction of Quinoline2-Carboxylic Acid (HL1) and 4,4 -dimethyl,2,2-Bipyridyl (L2) with Co(II),Ni(II) Cu(II), Zn(II), Pd(II) and Au(III) ions. The newly prepared complexes were isolated and characterized by (FT-IR) and (UVVis) spectroscopy, elemental analysis, flame atomic absorption technique, thermo gravimetric analysis, in addition to magne...
Multi-walled carbon nanotube was oxidized with various oxidizing agents (nitric acid, hydrogen peroxide and ammonium persulphate) to produce multi-walled carbon nanotubes of various surface properties. The oxidized sorbents were used for the preconcentration of some metals (Mn, Pb, Cu, Cd, Zn) from environmental waters prior to their determination by flame atomic absorption spectroscopy. The be...
Two atomic absorption techniques, acid digestion followed by conventional flame analysis and directanalysisof solidsamples with the graphite furnace, were compared forthe determination of copper in fingernails. Nail samples, from 11 persons, containing between 5 and 50 1zg/gof copper, were analyzed by both methods. There was good correlationbetween resultsofthe two.The furnace requires less sam...
A flameless atomic absorption method for the coextraction of platinum and palladium from biological and environmental samples by high molecular weight amine (HMWA) is given. Also, methods for lead determination in biological samples by use of extraction flameless analysis and direct aspiration-flame analysis are reported. A study of lead contamination of Vacutainer tubes is given.
Due to importance of wheat as the most popular food, in this data article, we determined the accumulation of heavy metal levels including Cd, Co, and Cu in wheat grains in Dashtestan county, Iran. The concentration levels of heavy metals in wheat grains cultured were determined by Flame Atomic Absorption Spectrometry (FAAS).
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