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Kikuo Terada - One of the best experts on this subject based on the ideXlab platform.

  • SEPARATION AND DETERMINATION OF A TRACE AMOUNT OF LITHIUM AS ITS THENOYLTRIFLUOROACETONE COMPLEX WITH 12-CROWN-4 BY MEANS OF SYNERGIC EXTRACTION AND Flame Photometry
    Analytical Sciences, 2007
    Co-Authors: Tatsuo Itoh, Mokarram Billah, Takaharu Honjo, Kikuo Terada
    Abstract:

    A new method for the separation and determination of a trace amount of lithium in ppb-ppm level in water as its thenoyltrifluoroacetone (TTA) complex with 12-crown-4 (12C4) has been established by means of synergic extraction and back extraction combined with Flame Photometry. The effect of various factors (pH, solvent, reagent concentration, shaking time, preconcentration factor, and foreign ions etc.) on the extraction and back extraction of lithium has been investigated.Here the lithium TTA chelate in o-dichlorobenzene forms stable adducts with 12C4 (LiTTA•n12C4, n=0-2); the stability constants (βn) of the adducts determined by means of curve fitting method being β1=4.46 and β2=6.45. The amount of lithium in sodium chloride of guaranteed reagent was found to be 9.5 ±0.2ppb by means of the proposed method.

  • Separation and determination of trace amounts of barium as its thenoyltrifluoroacetone complex with dibenzo-18-crown-6 by means of synergistic extraction and Flame Photometry
    Fresenius' Journal of Analytical Chemistry, 1993
    Co-Authors: Mokarram Billah, Takaharu Honjo, Kikuo Terada
    Abstract:

    A new method for the separation and determination of trace amounts of barium at the ppb-ppm level in water as its thenoyltrifluoroacetone (TTA) complex with dibenzo-18-crown-6 (DB18C6) comprises synergistic extraction and back extraction combined with Flame Photometry. The effect of various factors (solvent, size of crown ether, reagent concentration, shaking time, preconcentration factor, foreign ions etc.) on the extraction and back extraction of barium has been investigated. The barium TTA chelate in o-dichlorobenzene forms stable adducts with DB18C6 [Ba(TTA)_2 · nDB18C6, n=1∼2]; the stability constants (βn) of the adducts determined by means of the curve fitting method are log β_1=3.77 and log β_2=7.91. The content of barium in sodium chloride and sodium nitrate of guaranteed reagent grade was found to be 9.67±0.08 μg/g and 7.86±0.09 μg/g, respectively.

  • SEPARATION AND DETERMINATION OF A TRACE AMOUNT OF LITHIUM AS ITS THENOYLTRIFLUOROACETONE COMPLEX WITH 12-CROWN-4 BY MEANS OF SYNERGIC EXTRACTION AND Flame Photometry
    Analytical Sciences, 1991
    Co-Authors: Tatsuo Itoh, Mokarram Billah, Takaharu Honjo, Kikuo Terada
    Abstract:

    A new method for the separation and determination of a trace amount of lithium in ppb∼ppm level in water as its thenoyltrifluoroacetone (TTA) complex with 12-crown-4 (12C4) has been established by means of synergic extraction and back extraction combined with Flame Photometry. The effect of various factors (pH, solvent, reagent concentration, shaking time, preconcentration factor, and foreign ions etc.) on the extraction and back extraction of lithium has been investigated. Here the lithium TTA chelate in o-dichlorobenzene forms stable adducts with 12C4 (LiTTA-n12C4, n=0∼2); the stability constants (β n) of the adducts determined by means of curve fitting method being βi=4.46 and β 2=6.45. The amount of lithium in sodium chloride of guaranteed reagent was found to be 9.5 -0.2 ppb by means of the proposed method. © 1991, The Japan Society for Analytical Chemistry. All rights reserved

J. Ramírez-muñoz - One of the best experts on this subject based on the ideXlab platform.

  • Suppression of Flame Contamination with the Sprayer—Burner Sheath in Emission Flame Photometry
    Applied Spectroscopy, 2016
    Co-Authors: J. Ramírez-muñoz
    Abstract:

    An auxilary device has been used in tests done to measure contamination suppression achieved with a sheathed sprayer–burner in emission Flame Photometry. Sodium has been used as analyte and contaminant. Oxygen was utilized as sheath gas for oxygen–hydrogen Flames.

  • Interferences of three elements in Flame Photometry Cr-Co-Mn system
    Analytica Chimica Acta, 2002
    Co-Authors: F. Burriel-martí, J. Ramírez-muñoz, M. C. Asunción-omarrementería
    Abstract:

    Abstract The correction methods proposed by two of the authors (F.B-M and J.R-M ), for interferential systems of two or three elements in Flame Photometry, have been applied to the interferential effects that occur in solutions containing chromium, cobalt and manganese, all three elements being present or combinations of two of them. A comparison has been made of the different systems in aqueous and sulphuric acid solutions, with concentrations which varied between 50 and 500 p.p.m. of cobalt or manganese and between 200 and 2000 p.p.m. of chromium. The correction methods that may be applied to experimental values obtained by Flame Photometry with these systems have been indicated. A series of examples have also been included in order to show the results obtained with prepared solutions of known concentration and with samples previously analysed by chemical methods. Finally, the possibility of increasing the accuracy of the methods by means of a double correction has been considered.

  • Advances in the use of computer techniques in Flame Photometry
    Analytica Chimica Acta, 2002
    Co-Authors: J.l. Malakoff, J. Ramírez-muñoz, C.p. Aime
    Abstract:

    Abstract The range and complexity of the application of computer techniques in Flame Photometry methods has been extended. Improvements in output formatting are detailed and typical automated analyses are presented. Examples are discussed from both mathematical and analytical points of view. The potential of graphic display consoles is explained in detail.

  • Qualitative and quantitative sensitivity in Flame Photometry.
    Talanta, 2001
    Co-Authors: J. Ramírez-muñoz
    Abstract:

    Abstract Concepts of sensitivity in Flame Photometry are discussed. A distinction is made between sensitivity itself, concentration limits and dilution limits applied to qualitative and quantitative analysis by Flame Photometry. Sensitivity values, as well as the concentration limits, are considered from two different aspects: as a function of the slope of calibration curves—percentual values—and as a function of fluctutions—fluctuational values. The concepts are applied to the two main branches of Flame Photometry, emission and absorption.

José Otávio Do Amaral Corrêa - One of the best experts on this subject based on the ideXlab platform.

  • comparative analysis for strength serum sodium and potassium in three different methods Flame Photometry ion selective electrode ise and colorimetric enzymatic
    Journal of Clinical Laboratory Analysis, 2018
    Co-Authors: Rafaela Alvim Garcia, Chislene Pereira Vanelli, Olavo S Pereira, José Otávio Do Amaral Corrêa
    Abstract:

    BACKGROUND Hydroelectrolytic disorders are common in clinical situations and may be harmful to the patient, especially those involving plasma sodium and potassium dosages. Among the possible methods for the dosages are Flame Photometry, ion-selective electrode (ISE) and colorimetric enzymatic method. METHODS We analyzed 175 samples in the three different methods cited from patients attending the laboratory of the University Hospital of the Federal University of Juiz de Fora. The values obtained were statistically treated using SPSS 19.0 software. The present study aims to evaluate the impact of the use of these different methods in the determination of plasma sodium and potassium. RESULTS The averages obtained for sodium and potassium measurements by Flame Photometry were similar (P > .05) to the means obtained for the two electrolytes by ISE. The averages obtained by the colorimetric enzymatic method presented statistical difference in relation to ISE, both for sodium and potassium. In the correlation analysis, both Flame Photometry and colorimetric enzymatic showed a strong correlation with the ISE method for both dosages. CONCLUSION At the first time in the same work sodium and potassium were analyzed by three different methods and the results allowed us to conclude that the methods showed a positive and strong correlation, and can be applied in the clinical routine.

  • Comparative analysis for strength serum sodium and potassium in three different methods: Flame Photometry, ion‐selective electrode (ISE) and colorimetric enzymatic
    Journal of Clinical Laboratory Analysis, 2018
    Co-Authors: Rafaela Alvim Garcia, Chislene Pereira Vanelli, Olavo Dos Santos Pereira Junior, José Otávio Do Amaral Corrêa
    Abstract:

    BACKGROUND Hydroelectrolytic disorders are common in clinical situations and may be harmful to the patient, especially those involving plasma sodium and potassium dosages. Among the possible methods for the dosages are Flame Photometry, ion-selective electrode (ISE) and colorimetric enzymatic method. METHODS We analyzed 175 samples in the three different methods cited from patients attending the laboratory of the University Hospital of the Federal University of Juiz de Fora. The values obtained were statistically treated using SPSS 19.0 software. The present study aims to evaluate the impact of the use of these different methods in the determination of plasma sodium and potassium. RESULTS The averages obtained for sodium and potassium measurements by Flame Photometry were similar (P > .05) to the means obtained for the two electrolytes by ISE. The averages obtained by the colorimetric enzymatic method presented statistical difference in relation to ISE, both for sodium and potassium. In the correlation analysis, both Flame Photometry and colorimetric enzymatic showed a strong correlation with the ISE method for both dosages. CONCLUSION At the first time in the same work sodium and potassium were analyzed by three different methods and the results allowed us to conclude that the methods showed a positive and strong correlation, and can be applied in the clinical routine.

Messer - One of the best experts on this subject based on the ideXlab platform.

Rafaela Alvim Garcia - One of the best experts on this subject based on the ideXlab platform.

  • comparative analysis for strength serum sodium and potassium in three different methods Flame Photometry ion selective electrode ise and colorimetric enzymatic
    Journal of Clinical Laboratory Analysis, 2018
    Co-Authors: Rafaela Alvim Garcia, Chislene Pereira Vanelli, Olavo S Pereira, José Otávio Do Amaral Corrêa
    Abstract:

    BACKGROUND Hydroelectrolytic disorders are common in clinical situations and may be harmful to the patient, especially those involving plasma sodium and potassium dosages. Among the possible methods for the dosages are Flame Photometry, ion-selective electrode (ISE) and colorimetric enzymatic method. METHODS We analyzed 175 samples in the three different methods cited from patients attending the laboratory of the University Hospital of the Federal University of Juiz de Fora. The values obtained were statistically treated using SPSS 19.0 software. The present study aims to evaluate the impact of the use of these different methods in the determination of plasma sodium and potassium. RESULTS The averages obtained for sodium and potassium measurements by Flame Photometry were similar (P > .05) to the means obtained for the two electrolytes by ISE. The averages obtained by the colorimetric enzymatic method presented statistical difference in relation to ISE, both for sodium and potassium. In the correlation analysis, both Flame Photometry and colorimetric enzymatic showed a strong correlation with the ISE method for both dosages. CONCLUSION At the first time in the same work sodium and potassium were analyzed by three different methods and the results allowed us to conclude that the methods showed a positive and strong correlation, and can be applied in the clinical routine.

  • Comparative analysis for strength serum sodium and potassium in three different methods: Flame Photometry, ion‐selective electrode (ISE) and colorimetric enzymatic
    Journal of Clinical Laboratory Analysis, 2018
    Co-Authors: Rafaela Alvim Garcia, Chislene Pereira Vanelli, Olavo Dos Santos Pereira Junior, José Otávio Do Amaral Corrêa
    Abstract:

    BACKGROUND Hydroelectrolytic disorders are common in clinical situations and may be harmful to the patient, especially those involving plasma sodium and potassium dosages. Among the possible methods for the dosages are Flame Photometry, ion-selective electrode (ISE) and colorimetric enzymatic method. METHODS We analyzed 175 samples in the three different methods cited from patients attending the laboratory of the University Hospital of the Federal University of Juiz de Fora. The values obtained were statistically treated using SPSS 19.0 software. The present study aims to evaluate the impact of the use of these different methods in the determination of plasma sodium and potassium. RESULTS The averages obtained for sodium and potassium measurements by Flame Photometry were similar (P > .05) to the means obtained for the two electrolytes by ISE. The averages obtained by the colorimetric enzymatic method presented statistical difference in relation to ISE, both for sodium and potassium. In the correlation analysis, both Flame Photometry and colorimetric enzymatic showed a strong correlation with the ISE method for both dosages. CONCLUSION At the first time in the same work sodium and potassium were analyzed by three different methods and the results allowed us to conclude that the methods showed a positive and strong correlation, and can be applied in the clinical routine.