trace amounts
SENSITIVE SPECTROPHOTOMETRIC DETERMINATION OF TRACE AMOUNTS OF VANADIUM (IV, V) USING DITHIOLPHENOLS AND HYDROFOB AMINS
... ABSTRACT: Dithiolphenole (DP) has been synthesized and characterized with IR and NMR spectroscopic methods. A simple and spectrophotometric method has been developed for the determination of trace amounts ...
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A solid-phase extraction method using Transcarpathian clinoptilolite for preconcentration of trace amounts of terbium in water samples
... A solid-phase extraction procedure was developed for spectrophotometric determination of trace amounts of ter- bium(III) ions in aqueous solution. Transcarpathian clinop- tilolite heated at 350 °C for 2.5 h ...
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Kinetic Estimation of Mercury in Trace Amounts
... To establish reliability and applicability ie. in order to validate the analytical capability of the proposed method, recovery experiments were carried out on synthetic mixtures (SMs) containing other metals that are ...
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Trace amounts of sporadically reappearing HCV RNA can cause infection
... of interest not only from epidemiological and infectious disease standpoints, but also from a virological standpoint. Based on our current virological knowledge, HCV should not be able to achieve low-level persistence ...
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Effect of Trace Amounts of Carbon and Nitrogen on the High Temperature Oxidation Resistance of High Purity FeCrAl Alloys*
... The growth rate and adhesion of the protective alumina scales on the heat resistant FeCrAl alloys are known to depend on minor met- allurgical additions of the “reactive elements” such as Y, Ti, Zr, etc. The present ...
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Determination of Ultra Trace Amounts of Silver by Gfaas After Dllme Method In Water, Plasma and Urine
... This paper is devoted to an investigation carried out on a simple, rapid and sensitive method, which is proposed for selective determination of ultra trace amounts of silver from water and biological ...
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Total parathyroidectomy with trace amounts of parathyroid tissue autotransplantation as the treatment of choice for secondary hyperparathyroidism: a single-center experience
... almost untraceable sPTH levels immediately after sur- gery, but later it can be detected again. The rise in serum PTH may be a result of parathyroid cell re-proliferation stimulated by hypocalcemia in these patients. A ...
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Direct Determination of Ultra-Trace Amounts of Cadmium with Use of a High-Sensitive and Selective Coated Graphite Electrode
... Potential response of various ion-selective electrodes based on L With the exception of CdII ions, all the tested cations showed relatively weak responses in the concentration range 1.0×[r] ...
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Determination of Trace Amounts of Bismuth In Pharmaceutical and Water by Adsorptive Cathodic Stripping Voltammetry in the Presence of Xylenol Orange
... of trace amount of bismuth by cathodic stripping voltammetry based on adsorptive accumulation and electrochemical reduction of bismuth-XO complex on the electrode surface is ...
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Reverse flow injection analysis of trace amounts of anionic surfactants in seawater without liquid–liquid extraction
... With the extensive application of synthetic deter- gents in the daily life, the analysis of trace anionic surfactants (AS) in water has become an indispen- sable topic (Xiao et al. 2008) in the environmental ...
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Ultrasound-assisted emulsification microextraction and preconcentration of trace amounts of silver ions as a cyclam complex
... process between two immiscible phases (Ozcan et al. 2009). This leads to an increase in the extraction efficiency of the method within a minimum span of time (Luque de Castro and Priego-Capote 2006 and Khayatian and ...
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Solid Phase Extraction of Ultra Trace Amounts of Ni2+ by Dimethylglyoxime (DMG) Immobilized on Column
... Many methods have been developed for preconcentration of trace metals from natural waters. These include coprecipitation, electrodeposition, liquid- liquid extraction, ion exchange technique, filtration and ...
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Removal of Trace Amounts of Copper from Concentrated Hydrochloric Acid Solutions
... copper amounts on the stainless steel cathode were calculated according to formula (3), where m is the mass of the deposited copper, t is the thickness of the deposition determined by XRF measurements, A is the ...
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Gas chromatographic identification of trace amounts of organic compounds
... Measurement of the retention by Kovats indices where a compound's elution is compared with an homologous series of n-alkanes 2 has become a widely used technique for solute identificatio[r] ...
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Processing of solid wastes from mines, mineral processing and metallurgical plants-a conceptual case study of small size iron-steel industry, Ballari area , Karnataka, India
... fine to medium grained hematite with subordinate amounts of quartz. Fine grained feldspar, gibbsite and very fine grained magnetite were found in minor to trace amounts. Hematite aggregates are ...
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NEW SPECTROPHOTOMETRIC METHOD FOR DETERMINATION TRIFLUOPERAZINE HYDROCHLORIDE IN PHARMACEUTICAL PREPARATIONS BY USING OXIDATIVE COUPLING REACTION
... of trace amounts of Trifluoperazine hydrochloride in aqueous solution based on its oxidative coupling reaction with Para brome aniline and sodium periodate in the presence of Hydrochloride ...
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NEW SPECTROPHOTOMETRIC METHOD FOR DETERMINATION CHLORPROMAZINE HYDROCHLORIDE DRUG BY USING OXIDATIVE COUPLING REACTION
... of trace amounts of chlorpromazine hydrochloride in aqueous solution based on its oxidative coupling reaction with Para chloro aniline and sodium periodate in the presence of Hydrochloride ...
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Value of acid metabolic products in identification of certain corynebacteria
... It is quite different from the other corynebacterial species examined in producing major amounts of acetate, formate, and ethanol and trace amounts of lactate and succinate.. Unlike othe[r] ...
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Ion-flotation Separation of Cd(II) and Ag(I) Traces Using a New Ligand α - N– Naphtyl –4 – Methyl Benzamide (NMBA), before Their Flame Atomic Absorption Spectrometric determination of these ions in radiology wastewater, amalgam, natural water and blood samples
... The aim of this work was to develop a simple, sensitive and available method for the pre-concentration and determination of trace amounts of Ag + and Cd 2+ ions in various real samples using flame atomic ...
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Application of Sulfur Nanoparticles as a Solid Phase Extraction Sorbent for the Preconcentration of Lead(II) and Palladium(II) in Environmental Samples Prior to Flame Atomic Absorption Spectrometry Determination
... The application of sulfur nanoparticles as an efficient adsorbent for the solid-phase extraction and determination of the trace amounts of Pb and Pd ions was investigated in environmental samples using ...
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