photometric determination of potassium ion concentra
Flame photometric determination of potassium in sea A convenient flame photometric procedure for determining potassium in sea water and biological materials is described Factors affecting the intensity of the spectral line emitted by potassium ions were studiedPHOTOMETRIC 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 (l2) the need of simple, sensi tive, and reasonably accurate methods was felt for the determination of several biologically important ions PHOTOMETRIC DETERMINATION OF POTASSIUM IN BIOLOGICAL Scand J Clin Lab Invest 1966;18(2):15166 doi: 103109/ Authors J Funder, J O WiethDetermination of sodium, potassium, and water in human red
Determination of Potassium, Sodium, and Total Alkalies in
A simple flow injection with flame photometric detection has been developed for determination of sodium, potassium, and total alkalies in portland cement, fly ash, admixtures, and water of concrete A liquid sample or a digest of solid sample was injected into a water carrier stream which flowed to a flame photometerPotassium 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 Na+/K+ATPase) continually transports K+ into cells against a concentration gradient The human body requires about 50150 mmol/day Reference range (intervals) for potassiumPRACTICAL 2: DETERMINATION OF SODIUM AND 6 Flame Photometric Analysis of Sodium and Potassium in Nanogram Samples of Mammalian Nervous Tissue Journal of Neurochemistry, 1968; 15 (7)547–562 7 Worth HG, A comparison of the measurement of sodium and potassium by flame photometry and ionselective electrode" Ann Clin Biochem 1985; 22, 34350 Potassium content 0 20 40 60 80 100 120Determination of Sodium and Potassium Content Present in
ABSTRACT: Flame Photometry also known as flame atomic
Determination of Sodium, Potassium, Magnesium And Iron Oxides In Portland Cement By Flame Photometry, Research Laboratory Office of Testing and Research Report No 284 14 3 Worth HG (1985) A comparison of the measurement of sodium and potassium by flame photometry and ionselective electrode" Ann Clin Biochem 22:34350 4B Plotting the calibration curve: A graph between the mean of the K + ion signal on Yaxis and the concentration of standard K + ion on Xaxis 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 Determination of the concentration of potassium ion using May 01, 2002 Photometric Determination of Potassium Industrial Engineering Chemistry Analytical Edition 1942 , 14 (6) , 471472 DOI: 101021/ia009Determination of potassium Analytical Chemistry
Determination of Potassium by flame photometry Labmonk
Potassium Standard Calibration Solutions Deionized water is used for the “blank” A series of volume icluding 100, 200, 300, 400, and 500 mL of the standard 100ppm potassium solutions were taken into the first, second, third, fourth, and fifth 100mL volumetric flasks, respectively and separatelyThis 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 nearpatient testing in Colorimetric determination of potassium in plasma and 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, eg microtome sections of tissue, particularly valuable for many biological and medical investigationsFLAME PHOTOMETRIC DETERMINATION OF POTASSIUM IN
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 ionpair with a colored anion correlate well with the results obtained by a flamephotometric method (y = 104x 022, r = 0 Koch, William George, "Interfering ions in the flame photometric determination of certain cations" (1953) Graduate Student Theses, Dissertations, Professional Papers 8303 reported that sulfate and chloride ion show little effect on sodium# potassium# and calcium; but sodium# potassium#Interfering ions in the flame photometric determination of Sodium and Potassium IonSelective Electrode Systems to the Flame Photometric Reference Method; Approved Standard—Second Edition, C29A2 [electronic document] CLSI 2000; 20:1–22 2 Morimatsu H, Rocktäschel J, Bellomo R, Uchino S, Goldsmith D, Gutteridge G Comparison of PointofCare Versus Central Laboratory Measurement ofComparison of Point Of Care Testing (POCT) Methods and
510(k) SUBSTANTIAL EQUIVALENCE DETERMINATION
analyzers utilizing photometric and ion selective electrode technology for clinical use The Urea Nitrogen (BUN) (previously cleared in k) is chosen to demonstrate performance of the photometric unit The ISE unit measures sodium, potassium and chloride utilizing ion selective electrode technology, and consists of the following:Photometric Determination of Small Amounts of Scandium 30 Niobium and Tantalum Potassium 441 Determination in the Form of Potassium Chloride 442 Determination in the Form of Potassium Sulphate Ammonium Ion References 47 Methods of Separation of Gravimetric Analysis 1st Edition Elsevierflame 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 R 284 Determination of Sodium, Potassium, Magnesium
ANALYST JUNE Photometric and Fluorimetric Methods for
Potassium bromate is used in breadmaking 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 g1 level Experimental Reagents All chemicals used were of analyticalreagent grade anddirect ionselective electrode determinations in the foreseeable future Consequently, to introduce a new system of reporting results of sodium and potassium determinations by ionselective electrodes in terms of ion activity carries significant risks of confusing clinical interpretation 2,3 A C29A2: Standardization of Sodium and Potassium Ion 1 A method of flame photometry is described, by which the amount of sodium and potassium in biological fluids can be determined simultaneously, using samples of the order of 10 3 cumm 2 When the method is tested with quantities near the lower limits of detection (of the order 4 x 10 8 mg sodium, 6 x 10 8 mg potassium) the reproducibility, measured as standard deviation, is ±7 x 10 9 [PDF] SIMULTANEOUS DETERMINATION OF SODIUM AND POTASSIUM
Determination of potassium Analytical Chemistry
May 01, 2002 Photometric Determination of Potassium Industrial Engineering Chemistry Analytical Edition 1942 , 14 (6) , 471472 DOI: 101021/ia009Potassium Standard Calibration Solutions Deionized water is used for the “blank” A series of volume icluding 100, 200, 300, 400, and 500 mL of the standard 100ppm potassium solutions were taken into the first, second, third, fourth, and fifth 100mL volumetric flasks, respectively and separatelyDetermination of Potassium by flame photometry LabmonkAbstract 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, eg microtome sections of tissue, particularly valuable for many biological and medical investigationsFLAME PHOTOMETRIC DETERMINATION OF POTASSIUM IN
Determination of sodium and potassium by flame photometry
The proper level of potassium is essential for normal cell function An abnormal increase of potassium (hyperkalemia) or decrease of potassium (hypokalemia) can profoundly affect the nervous system and heart, and when extreme, can be fatal The normal blood potassium level is 35 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 ionpair with a colored anion correlate well with the results obtained by a flamephotometric method (y = 104x 022, r = 0 Colorimetric determination of potassium in whole blood This technique includes an enzymatic reaction at 40 degrees C for 60 min in 2% starch, with subsequent supplementation of the reaction mixture (05 ml) with the phenolphthalein reagent (30 ml) prepared in 01 M potassium carbonate buffer (pH 110) according to a special procedure, and measurement of the optical density of the obtained mixture [An improved method of photometric determination of
ANALYST JUNE Photometric and Fluorimetric Methods for
Potassium bromate is used in breadmaking 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 g1 level Experimental Reagents All chemicals used were of analyticalreagent grade andSodium and Potassium IonSelective Electrode Systems to the Flame Photometric Reference Method; Approved Standard—Second Edition, C29A2 [electronic document] CLSI 2000; 20:1–22 2 Morimatsu H, Rocktäschel J, Bellomo R, Uchino S, Goldsmith D, Gutteridge G Comparison of PointofCare Versus Central Laboratory Measurement ofComparison of Point Of Care Testing (POCT) Methods and Photometric Determination of Small Amounts of Scandium 30 Niobium and Tantalum Potassium 441 Determination in the Form of Potassium Chloride 442 Determination in the Form of Potassium Sulphate Ammonium Ion References 47 Methods of Separation of Gravimetric Analysis 1st Edition Elsevier
Laboratory methods Flashcards Quizlet
Photometric turbidimetric method 3 Precipitation with chloranilic acid What are the methods under photometric determination Sodium + magnesium uranylacetate = yellow brown complex with thioglycolic acid Potassium + anion free alkaline medium + sodium + tetraphenyl boron = turbidimetry proportional to potassium concentrationflame 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 R 284 Determination of Sodium, Potassium, Magnesium analyzers utilizing photometric and ion selective electrode technology for clinical use The Urea Nitrogen (BUN) (previously cleared in k) is chosen to demonstrate performance of the photometric unit The ISE unit measures sodium, potassium and chloride utilizing ion selective electrode technology, and consists of the following:510(k) SUBSTANTIAL EQUIVALENCE DETERMINATION
C29A2: Standardization of Sodium and Potassium Ion
direct ionselective electrode determinations in the foreseeable future Consequently, to introduce a new system of reporting results of sodium and potassium determinations by ionselective electrodes in terms of ion activity carries significant risks of confusing clinical interpretation 2,3 A 1 A method of flame photometry is described, by which the amount of sodium and potassium in biological fluids can be determined simultaneously, using samples of the order of 10 3 cumm 2 When the method is tested with quantities near the lower limits of detection (of the order 4 x 10 8 mg sodium, 6 x 10 8 mg potassium) the reproducibility, measured as standard deviation, is ±7 x 10 9 [PDF] SIMULTANEOUS DETERMINATION OF SODIUM AND POTASSIUM