determination thallium variables

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  • Thallium determination using catalytic redox reaction ...

    determination of thallium (I). It reacts with ascorbic acid in acidic medium to form a colorless product. Thallium (I) increases the rate of reaction and it can be determined base on its catalytic effect on the reaction. The reagents and manifold variables influences on the sensitivity were investigated and the optimum conditions were ...

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  • Diacetylmonoxime(panisyl)thiosemicarbazone as a new ...

    Indian Journal of Chemical Technology Vol. 13, September 2006, pp. 470475 Diacetylmonoxime(panisyl)thiosemicarbazone as a new chromogenic reagent for determination of thallium Anitha Varghese A M A Khadar*

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  • Incremental value of exercise electrocardiography and ...

    Incremental value of exercise electrocardiography and thallium201 testing in men and women for the presence and extent of coronary artery disease Anthony P. Morise, MD, a George A. Diamond, MD, b Robert Detrano, MD, PhD, c and Marco Bobbio, MD d Morgantown, W. Va., Los Angeles and Torrance, Calif., and Turin, Italy Our goal was to assess the ...

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  • Sensitive spectrophotometric determination of thallium(I ...

    Sensitive spectrophotometric determination of thallium(I)using rhodamine B hydrazide in micellar medium Article in Analytical methods 3(7):15461551 · July 2011 with 3 Reads DOI: /C0AY00551G

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  • DETERMINATION OF TRACES OF THALLIUM IN VARIOUS …

    Determination of traces of thallium in various matrices I NTROD U CTlO N Thallium is a relatively rare element and therefore its application is limited. The determination of traces of thallium, however, is important becau e of its high toxicity (maximal allowable concentration : in air).

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  • STANDARD OPERATING PROCEDURES CLUIN

    STANDARD OPERATING PROCEDURES SOP: 1811 PAGE: 1 of 42 REV: DATE: 03/17/06 DETERMINATION OF METALS BY INDUCTIVELY COUPLED PLASMA (ICP) METHODS (EPA/SW846 Methods 3015/3050B/6010B) CONTENTS SCOPE AND APPLICATION ... • Electronic Variable Volume Autopipettors, BIOHIT 500 to 5000 microliters (:L) and BIOHIT 100 to

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  • Quantitative exercise thallium201 single photon emission ...

    Quantitative exercise thallium201 single photon emission computed tomography for the enhanced diagnosis of ischemic heart disease ... prediction of multivessel involvement and accurate determination of perfusion defect size, while maintaining a high specificity. ... Exercise variables in patients with significant coronary artery disease were ...

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  • Direct Determination of Thallium in Water by Pre ...

    Thallium (Tl) has been identified to be an environmentally significant element because . of its toxicity. It is considered one of the most toxic heavy metals. The minimum ... Direct Determination of Thallium in Water by Preconcentration with PinAAcle 900H GFAAS ...

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  • Myocardial Perfusion Imaging with 201Tl

    After reading this article, the technologist will be able to describe the properties and uptake mechanism of 201 Tl, the procedure for myocardial perfusion imaging with this agent, and the advantages and disadvantages of thallium, compared with the technetium agents.

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  • Radiopharmaceutical Agents for Myocardial Perfusion ...

    Determination of the quantitative thallium imaging variables that optimize detection of coronary artery disease. J Am Coll Cardiol. 1986; 7: 527–537. Crossref Medline Google Scholar; 14 Steinberg EP, Klag MJ, Bakal CW, Strauss HW, Boucher CA, Guiney TE. Exercise thallium scans: patterns of use and impact on management of patients with known ...

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  • Application of Derivative Variableangle Synchronous ...

    for the Simultaneous Determination of 2Naphthoxyacetic Acid and 1Naphthalenacetamide ... thallium nitrate as an external heavy atom salt perturbed in sodium docecyl sulfate microemulsion aqueous ... variables and their interactions have to be carried out. The

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  • Superiority of quantitative exercise thallium201 ...

    Journal of the American College of Cardiology. Volume 12, Issue 1, July 1988 DOI: /07351097(88)903518 . PDF Article. Superiority of quantitative exercise thallium201 variables in determining longterm prognosis in ambulatory patients with chest pain: A comparison with cardiac catheterization.

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  • Presence of thallium in the environment: sources of ...

    Oct 26, 2016· Presence of thallium in the environment: sources of contaminations, distribution and monitoring methods. ... The review also includes an overview of analytical methods, which are commonly applied for determination of thallium in fly ash originating from industrial combustion of coal, in surface and underground waters, in soils and ...

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  • Thallium determination using catalytic redox reaction ...

    The reagents and manifold variables influences on the sensitivity were investigated and the optimum conditions were established. The reaction has been followed spectrophotometrically by measuring the decrease in the absorbance of methylene blue at 664 nm. ... Under optimum conditions, the proposed method allows the determination of thallium ...

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  • Experimental Studies of the Factors That Influence 1 ...

    Experimental Studies of the Factors That Influence 1Naphthaleneacetamide Determination by Micellestabilized Roomtemperature Phosphorescence Antonio Segura Carretero, ... the optimum experimental variables, a complete and

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  • EXTRACTIONSPECTROPHOTOMETRIC DETERMINATION OF …

    for the determination of thallium but they lack both in sel­ ... 'ious analytical variables on the determination of Tl(III) has been optimized. The application of the present method for the quantification of inorganic Tl in water samples has been studied. ...

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  • Evaluating Thallium Leaching from Fly Ash in Aquatic Systems

    Evaluating Thallium Leaching from Fly Ash in Aquatic Systems ... The determination of the exact speciation of Tl in fly ash will help to explain and predict the leaching behavior of thallium in fly ash ponds and other aquatic systems in the built and natural ... variables and thallium release in the mobile aqueous phase in fly ash pond systems. ...

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  • Sensitive spectrophotometric determination of thallium( i ...

    Read "Sensitive spectrophotometric determination of thallium( i )using rhodamine B hydrazide in micellar medium, Analytical Methods" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. ... All variables were studied in order to optimize the reaction ...

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  • Dr. Robert Okada, Cardiologist in Tulsa, OK | US News Doctors

    Determination of the quantitative thallium imaging variables that optimize detection of coronary artery disease. Kaul S, Boucher CA, Newell JB, Chesler DA, Greenberg JM, Okada RD, Strauss HW ...

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  • Determination of the quantitative thallium imaging ...

    Determination of the quantitative thallium imaging variables that optimize detection of coronary artery disease Article in Journal of the American College of Cardiology 7(3):527537 · April 1986 ...

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  • “FalsePositive” Myocardial Perfusion Scintigraphy ...

    “FalsePositive” Myocardial Perfusion Scintigraphy Findings in Patients with Angiographically Normal Coronary Arteries: Insights from Intravascular Sonography Studies ... Newell JB, et al. Determination of the quantitative thallium imaging variables that optimize detection of coronary artery disease. J Am Coll Cardiol. 1986; 7: ...

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  • Elemental Analysis Manual Section 4

    Thallium is listed conditionally because although fortification ... technique is required to compensate for variable background emission contribution to analyte ... determination of IDLs, and for ...

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  • Flame Atomic Absorption Spectrometric Determination of ...

    Flame Atomic Absorption Spectrometric Determination Bull. Korean Chem. Soc. 2003, Vol. 24, No. 8 1177 ... trace determination of thallium in various alloys and biological samples. Key Words : Benzophenone adsorption, 1,10Phenanthroline, Solidliquid extraction of thallium ... variables constant. It was observed that the signal height was

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  • Sensitive spectrophotometric determination of thallium(I ...

    A simple, sensitive, and rapid spectrophotometric method is proposed for the determination of the trace amount of thallium. The method is based on the oxidation of rhodamine B hydrazide by thallium(i) in acidic medium to give a pinkish violet radical cation, having a maximum absorption at 565 nm.

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  • Development of surfactant assisted kinetic method for ...

    Development of surfactant assisted kinetic method for trace determination of thallium in environmental samples ... accurate and cost effective kinetic method for the determination of thallium in environmental samples based on the quantitative ... Z. EbrahimifardThallium determination using catalytic redox reaction between methylene blue and ...

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  • c © TÜB_ITAK A Novel Method for the Spectrophotometric ...

    All variables were studied in order to optimize the reaction conditions. The ecacy of the proposed method is shown by the successful determination of traces of thallium in alloys, minerals, standard reference materials, water, and urine samples. Key Words: Methiomeprazine hydrochloride (MMH), thallium(III) determination, spectrophotometry.

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  • | THALLIUM DETERMINATION USING CATALYTIC REDOX ...

    The reagents and manifold variables influences on the sensitivity were investigated and the optimum conditions were established. The reaction has been followed spectrophotometrically by measuring the decrease in the absorbance of methylene blue at 664 nm. ... Under optimum conditions, the proposed method allows the determination of thallium ...

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  • Exercise Tomographic Thallium201 Imaging in Patients with ...

    Among the thallium variables, the change in the global thallium201 score (a measure of redistribution) added independent information to clinical and exercise variables, resulting in only 3% of the patients being reclassified regarding their predicted risk for severe coronary disease.

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  • Determination of the quantitative thallium imaging ... CORE

    Determination of the quantitative thallium imaging variables that optimize detection of coronary artery disease ... Initial thallium uptake was the most sensitive but least specific (p < ), whereas redistribution was the least sensitive and most specific (p < ).Using stepwise logistic regression analysis, the best correlate of ...

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  • Spectrophotometric Determination of the Trace Amount of ...

    The method has been successfully applied for the determination of thallium(ІΙΙ) and thallium(I) in synthetic, standard reference materials, water and urine samples with satisfactory results. ... The reagents and manifold variables influences on the sensitivity were investigated and the optimum reaction conditions have been established. The ...

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  • Determination of the quantitative thallium imaging ...

    Determination of the Quantitative Thallium Imaging Variables That Optimize Detection of Coronary Artery Disease SANJIV KAUL, MD, FACe, CHARLES A, BOUCHER, MD, FACC, JOHN B, NEWELL, BA, ... imaging variables for detection of coronary artery dis• ... thallium variables …

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  • Determination of the quantitative thallium imaging ...

    Determination of the quantitative thallium imaging variables that optimize detection of coronary artery disease ... the relative value of different imaging variables for detection of coronary artery disease has not been analyzed in a large group of patients with cardiac catheterization data. ... 60 and 87% for redistribution and 74 and 66% for ...

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  • Thallium redistribution does not predict perioperative ...

    Utility of preoperative stress thallium scintigraphy (STS) was determined in 59 patients, thought to be at increased risk, prior to major vascular surgery from July 1987 to February 1990. Fortyseven had oral dipyridamole and 12 underwent exercise STS. Thallium redistribution (TR) was present in 61%

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