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  • Determination of the concentration of potassium ion using

    Determination of the concentration of potassium ion using

    B. Plotting the calibration curve A graph between the mean of the K ion signal on Y-axis and the concentration of standard K ion on X-axis is plotted.. C. Determination of the conc. of the K ion in the sample from calibration curve. Concentration value of the sample solution is obtained in ppm, extrapolating cross section point of calibration curve and the intensity of the K ion ...

  • R 284 Determination of Sodium Potassium

    R 284 Determination of Sodium Potassium

    flame photometric methods were investigated and techniques developed for determining these constituents rapidly and accurately. Determination of sodium and potassium oxides by flame photometry has been an estab lished ASTM procedure since 1949, but the extension of

  • FLAME PHOTOMETRIC DETERMINATION OF POTASSIUM

    FLAME PHOTOMETRIC DETERMINATION OF POTASSIUM

    Abstract. The importance of the potassium ion as a chief cation in cells, and the one occurring in highest concentration, renders a method for its determination in histologically definable samples, e.g. microtome sections of tissue, particularly valuable for many biological and medical investigations.

  • Determination of Potassium with Hexanitrodiphenylamine

    Determination of Potassium with Hexanitrodiphenylamine

    Dipicrylamine-modified triacetylcellulose membrane for optical pH and potassium ion measurement. Analytica Chimica Acta 1996, 335 3 ... PHOTOMETRIC DETERMINATION OF POTASSIUM IN BIOLOGICAL MATERIALS. ... A Rapid Determination of Potassium with Hexanitro-diphenylamine Dipicrylamine Reagent. ...

  • Flame photometric determination of sodium and potassium

    Flame photometric determination of sodium and potassium

    The sensitivity of the potassium determination in the coal-gas flame is about equal to that in the acetylene flame, which shows that the potassium atoms are easily excited the temperature level of the coal-gas flame is apparently sufficiently high for a maximal potassium emission. Ftp. 50. Determination of 2 mg Na saliva, analysis.

  • ANALYST JUNE Photometric and Fluorimetric

    ANALYST JUNE Photometric and Fluorimetric

    Potassium bromate is used in bread-making as an oxidising agent. The applicability of the photometric method to the determination of bromate was demonstrated by determining the residual potassium bromate content in bread at the pg g-1 level. Experimental Reagents All chemicals used were of analytical-reagent grade and

  • PDF Enzymatic determination of potassium in serum

    PDF Enzymatic determination of potassium in serum

    The within-run imprecisions are comparable with those for ion-selective electrodes for K, 1.0 at 4.5 mmolL for Na, 1.1 at 136 mmolL the analytical range is 2-10 mmolL for potassium, 80 ...

  • Spectrophotometric flowinjection method for

    Spectrophotometric flowinjection method for

    photometric ow-injection method was developed for the determination of sorbic acid in wines based on the oxidation of sorbic acid with K 2 Cr 2 O 7 H 2 SO 4 at 1008C, followed by reaction of the resultingmalon-aldehyde with thiobarbituric acid, also at 1008C, to give a red product, the absorbance of which is mea-sured at 532 nm.

  • THE DETERMINATION OF CALCIUM IN BIOLOGICAL

    THE DETERMINATION OF CALCIUM IN BIOLOGICAL

    ion causes no interference with the flame photo-metric determination of sodium and potassium with the EEL instrument Collins and Polkin-horne, 1952 and less than any other cation exam-ined in the case of calcium Table I, ammonium TABLE I READINGS ON LOWER SCALE OF EEL FLAME PHOTOMETER Substance Added Reading Distilled water only.50t I ml.0 ...

  • PDF NITRATE AND NITRITE TESTING IN SOIL

    PDF NITRATE AND NITRITE TESTING IN SOIL

    Sulphanilamide 1 st amine to form the diazonium ion, the diaz onium ion then reacts with the 2 nd amine to produce an Az o-dye a colored compound The half reactions betwee n Nitrate NO 3 ...

  • Colorimetric determination of potassium in whole blood

    Colorimetric determination of potassium in whole blood

    Sep 01, 1985 Effect of sodium on the auto analyzer flame photometric determination of potassium in serum. Anand VD, Lott JA, Grannis GF, Mercier JE. Am J Clin Pathol, 595717-730, 01 May 1973 Cited by 0 articles PMID 4702690

  • The Determination of Calcium in Natural Waters 1

    The Determination of Calcium in Natural Waters 1

    ion and calcium purpuratc concentrations from Equations I, 2, and 3 for selected values of added EDTA are shown in Fig- ure 1. The accuracy which would result if the end point is estimated from photometric Free calcium ion with no indicator Total Cd.,001 molar Indicator .OOOl molar FIG. 1.

  • PDF Derivatives of carbohydrazide thiocarbohydrazide

    PDF Derivatives of carbohydrazide thiocarbohydrazide

    Effects of Various Ions on the Determination of Iron lppm with PMAG at pH 4.2 and 570 nm Tolerance Foreign ion or Tolerance Foreign ion or ppm species ppm species 1000 alkali and alkaline 4000 thiourea earth metals 500 Br-, I P20 4-, C10- 100 InIII CIO4-, SO42-.

  • Potentiometric determination of calcium and magnesium

    Potentiometric determination of calcium and magnesium

    Dec 01, 1976 Ethylenediaminetetraacetic acid EDTA forms strong complexes with both of these elements but it can only be used for their determination after they have been separated e.g. by precipitation of calcium as oxalate or magnesium as hydroxide Culkin, 1965 or by use of ion-exchange resins Carpenter, 1957.

  • A comparison of the measurementofsodium and

    A comparison of the measurementofsodium and

    equation 3. In other words the determination of the amount of a given ion in a solution using its ion specific electrode is a determinationof its activity not its concentration. The activity measurement is synonymous with concentration only at infinite dilution. In emission flame photometry atoms are excited to an energy level above their ground

  • Colorimetric determination of potassium in whole blood

    Colorimetric determination of potassium in whole blood

    Sep 01, 1985 This spectrophotometric method for the direct determination of potassium in serum or plasma is based on the selective complexing of potassium by a specific macrocyclic polyether, with the subsequent formation of an ion-pair with a colored anion. ... correlate well with the results obtained by a flame-photometric method y 1.04x - 0.22, r 0 ...

  • An improved method of photometric determination of

    An improved method of photometric determination of

    This technique includes an enzymatic reaction at 40 degrees C for 60 min in 2 starch, with subsequent supplementation of the reaction mixture 0.5 ml with the phenolphthalein reagent 3.0 ml prepared in 0.1 M potassium carbonate buffer pH 11.0 according to a special procedure, and measurement of the optical density of the obtained mixture ...

  • Determination of Sodium and Potassium Content

    Determination of Sodium and Potassium Content

    6. Flame Photometric Analysis of Sodium and Potassium in Nanogram Samples of Mammalian Nervous Tissue Journal of Neurochemistry, 1968 15 7547562. 7. Worth H.G., A comparison of the measurement of sodium and potassium by flame photometry and ion-selective electrode . Ann. Clin. Biochem. 1985 22, 343-50. Potassium content 0 20 40 60 80 100 120

  • Essay on Spectrophotometric Analysis of Kmno4 Solution

    Essay on Spectrophotometric Analysis of Kmno4 Solution

    Mar 04, 2013 The preparation of four known concentration of KMnO4 was done namely, 2.00 10-4M, 1.50 10-4M, 1.00 10-4M, 5.00 10-5M, respectively and is to be place on the spectrophotometer with the unknown and distilled water for the determination of each concentrations absorbance.

  • Comparative analysis for strength serum sodium and

    Comparative analysis for strength serum sodium and

    Jun 19, 2018 Thus, when most precise, sensitive andor specific is the method to ions determination, more subsidies the medical clinic will has for correct interventions. Among the possible methods for sodium and potassium determinations we have flame photometry, ionselective electrode ISE, and enzymatic colorimetric method.

  • A Simple and Rapid Method for the Detection of NonIonic

    A Simple and Rapid Method for the Detection of NonIonic

    A spectrophotometric approach for the detection of non-ionic surfactant Triton X-100 has been proposed in this paper. This method does not involve extraction of the ion-associate with harmful solvents, but employs adhesion of the ion-association of potassiumnon-ionic surfactants complex and tetraphenylporphyrin tetrasulfonic acid obtained by vigorous shaking.

  • 510k SUBSTANTIAL EQUIVALENCE DETERMINATION

    510k SUBSTANTIAL EQUIVALENCE DETERMINATION

    510k SUBSTANTIAL EQUIVALENCE DETERMINATION DECISION SUMMARY ASSAY AND INSTRUMENT COMBINATION TEMPLATE A. 510k Number k070057 B. Purpose for Submission New device C. Measurand Glucose, Sodium, Potassium, Chloride and Lithium D. Type of Test Quantitative photometric and ion-selective electrode E. Applicant Medica Corp.

  • A Modified Method for the Accurate Determination of

    A Modified Method for the Accurate Determination of

    determination were the slightest. Finally, a low concentra-tion oxidant method was proposed for the accurate determination of COD Cr in high chloride oilfield wastewaters. The performances of the proposed me-thod were verified by the simulated and actual high chloride oilfield waste-water. The results showed that when Cl1 and COD 100

  • Gravimetric Analysis 1st Edition Elsevier

    Gravimetric Analysis 1st Edition Elsevier

    Photometric Determination of Small Amounts of Scandium 30. Niobium and Tantalum ... Potassium 44.1. Determination in the Form of Potassium Chloride 44.2. Determination in the Form of Potassium Sulphate ... Ammonium Ion References 47. Methods of Separation of

  • APPLICATION OF METHYL ORANGE OXIDATION IN

    APPLICATION OF METHYL ORANGE OXIDATION IN

    Landolt reaction of methyl orange with potassium bromate in the presence of hydrazine 10. In the present brief report we study the possibility of periodate determination and its optimal conditions. Experimental A standard solution of periodate ion 4.30 103 M

  • Interfering ions in the flame photometric determination

    Interfering ions in the flame photometric determination

    Koch, William George, Interfering ions in the flame photometric determination of certain cations 1953. Graduate Student Theses, Dissertations, amp Professional Papers. 8303. ... reported that sulfate and chloride ion show little effect on sodium potassium and calcium but sodium potassium

  • US2967092A Colorimetric determination of dissolved

    US2967092A Colorimetric determination of dissolved

    US2967092A US658899A US65889957A US2967092A US 2967092 A US2967092 A US 2967092A US 658899 A US658899 A US 658899A US 65889957 A US65889957 A US 65889957A US 2967092 A US2967092 A US 2967092A Authority US United States Prior art keywords reagent water solution oxygen glycerine Prior art date 1957-05-13 Legal status The legal status is an assumption and is not

  • Verification of Measurement Capabilities of Flame

    Verification of Measurement Capabilities of Flame

    dards are as follows 1.0 mgL for sodium and potassium, 0.5 mgL for magnesium, and 5.0 mgL for calcium. This requires a multiple increase of the dilution factor, often several or even tens of times, e.g. when higher concentra-tions of sodium or magnesium are present. In general, this requires preparation of solutions using different dilution

  • PHOTOMETRIC DETERMINATION OF POTASSIUM IN

    PHOTOMETRIC DETERMINATION OF POTASSIUM IN

    PHOTOMETRIC DETERMINATION OF POTASSIUM IN BIOLOGICAL MATERIALS BY RUBENS SALOMB PEREIRA From the Laboratory of General and Animal Physiology, Department of Zoology, C niversity of XQ o Paulo, Silo Paulv, Brazil Received for publication, April 17, 1945 In the course of work in this laboratory l-2 the need of simple, sensi- tive, and reasonably accurate

  • Proposed Revision of Standard Method for Flame

    Proposed Revision of Standard Method for Flame

    the determination of the sample con-centration by mathematical or graphi-cal evaluation of the calibration data. Potassium and calcium have been reported to interfere with the sodium determination by the internal-standard method if the potassium-to-sodium ratio is 5 1 or greater, and the calcium-to-sodium ratio is 101 or higher.

  • Photometric determination of boron in potassium

    Photometric determination of boron in potassium

    Aug 16, 1999 The possibility of photometric boron determination by the reaction of the formation of the macrobicyclic complex FeNx 3 BOH 2 in nioximeboric acidFeII system is demonstrated. The optimal conditions for the reaction are found to be pH 3.2 0.3 whereas the concentrations of nioxime, ironII and ascorbic acid should be 8 10 3, 7 10 5 and 5 10 3 M, respectively.

  • ABSTRACT Flame Photometry also known as flame

    ABSTRACT Flame Photometry also known as flame

    Determination of Sodium, Potassium, Magnesium And Iron Oxides In Portland Cement By Flame Photometry, Research Laboratory Office of Testing and Research Report No. 284. 1-4. 3. Worth H.G. 1985. A comparison of the measurement of sodium and potassium by flame photometry and ion-selective electrode . Ann. Clin. Biochem. 22343-50. 4.

  • volumetric determination of potassium ion concentration in

    volumetric determination of potassium ion concentration in

    Determination of sodium, potassium, calcium and magnesium ... Mar 09, 2012 Fig. 2 shows an ion chromatogram obtained in the analysis of a biodiesel from soy oil where the signals of sodium, potassium, magnesium and calcium ions are clearly shown.

  • Colorimetric determination of potassium in plasma and

    Colorimetric determination of potassium in plasma and

    This potassium method does not require calibration or instrument maintenance by We evaluated a colorimetric assay of potassium in plasma and serum with the Boehringer Mannheim Reflotron reflectance photometric analyzer, which is designed for near-patient testing in

  • PRACTICAL 2 DETERMINATION OF SODIUM AND

    PRACTICAL 2 DETERMINATION OF SODIUM AND

    Potassium is the major cation found intracellularly. The average cell has 140 mM K inside but only about 10 mM Na. K slowly diffuses out of cells so a membrane pump the NaK-ATPase continually transports K into cells against a concentration gradient. The human body requires about 50-150 mmolday. Reference range intervals for potassium

  • Ion Analysis with Agilent Capillary Electrophoresis Systems

    Ion Analysis with Agilent Capillary Electrophoresis Systems

    Feb 01, 2010 ion. The broadened peak in red wine is indicative of the high potassium level. This mobility mismatch is always amplified at high solute concentration. However, since resolution is superior, quantitation will be accurate as long as peak areas are used. If sharpening of the potassium peak is desired, a higher mobility VR will have to be selected.

  • NITRITENITRATE colorimetric method

    NITRITENITRATE colorimetric method

    4.3.2. Potassium nitrate - standard solution Accurately weigh 81.5 mg 0.1 mg Potassium nitrate e.g. Merck 5065, Suprapur into a 100 ml volumetric flask, dissolve in redist. water and make up to the mark with the same solvent stock solution 500 mg nitritel.

  • EP0275398A2 Reagent for the determination of chloride

    EP0275398A2 Reagent for the determination of chloride

    EP0275398A2 EP87116956A EP87116956A EP0275398A2 EP 0275398 A2 EP0275398 A2 EP 0275398A2 EP 87116956 A EP87116956 A EP 87116956A EP 87116956 A EP87116956 A EP 87116956A EP 0275398 A2 EP0275398 A2 EP 0275398A2 Authority EP European Patent Office Prior art keywords reagent chlorine ion determination ion glucosidase Prior art date 1986-11-17 Legal status

  • CN1200264C Method for measuring seawater chemical

    CN1200264C Method for measuring seawater chemical

    The present invention discloses a photometric method for measuring chemical oxygen demand of sea water. The method comprises the following steps firstly, preprocessing a sea water sample taking basic potassium hypermanganate as a reaction system. In this way, organics in the sea water fast reacts with excessive potassium permanganate in an alkalic medium, and then the potassium permanganate ...

  • Photometric determination of traces of metals Book

    Photometric determination of traces of metals Book

    articleosti5775902, title Photometric determination of traces of metals, author Onishi, H, abstractNote This book focuses on contemporary colorimetric and some fluorimetric methods especially suitable and useful for the determination of metals occurring in trace concentrations. It covers individual metals, aluminum to lithium, with magnesium through zirconium.