photometric determination of potassium ion concentra

PHOTOMETRIC DETERMINATION OF POTASSIUM IN BIOLOGICAL ...

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

Flame photometric determination of sodium and potassium in ...

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).

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 photometer. A change in emission intensity at a selected wavelength was recorded as a peak.

photometric determination of potassium ion concentration ...

Determination of potassium ions in fluids - Boehringer Mar 26, 1996 · These methods for potassium ion determination demonstrate the ... such as flame photometric or ion ... Potassium Ion

Comparison of methods for sodium and potassium ...

Objective: To compare results for sodium and potassium determination on llama urine, using flame emission spectrophotometry (flame photometry), atomic absorption spectrophotometry (AAS), indirect ion-selective electrode potentiometry (ISE), and direct ISE. Design: Llama urine samples encompassing a wide range of electrolyte concentrations were analyzed for sodium and potassium concentrations ...

Interfering ions in the flame photometric determination of ...

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#

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 photometer. A change in emission intensity at a selected wavelength was recorded as a peak.

ANALYST. JUNE Photometric and Fluorimetric Methods for

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

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 Na+/K+-ATPase) continually transports K+ into cells against a concentration gradient. The human body requires about 50-150 mmol/day. Reference range (intervals) for potassium

CB Potassium Assay Cedex Analyzers ProductFlyer

Replacement of ISE testing by the photometric assay is easy and does not require revalidation of established procedures. Figure 2: Potassium was determined on a Cedex Bio HT Analyzer in samples of culture media spiked with different KCl concentra-tions, using the ISE electrode and the photometric potassium test, respectively.

Flame photometric determination of salinity in processed

photometric determination Potassium ion (0–5 ppm) and calcium ion (0–100 ppm) were separately added into standard sodium ion solutions (1, 10, and 20 ppm) to evaluate the interference

Indirect photometric detection for determination of ...

May 01, 1996 · ELSEVIER Journal of Pharmaceutical and Biomedical Analysis 14 (1996) 835 844 JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS Indirect photometric detection for determination of citrate in pharmaceutical matrices by ion chromatography Arun Chalgeri2, Henry S.I. Tan* I)iri.~zon ~!I' P/tarmaceulical Sciem'cs, ColleL, e ~!/

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 10:1 or higher.

Flame-photometric Determination of Strontium in Natural

Flame-photometric Determination of Strontium in Natural Water ... 3. Comparison of results obtained by the flame-photometric, ion-exchange flame-photometric, and spectrographic methods _ 51 4. Recovery of strontium added to tap water. ... the determination of sodium, potassium

Spectrophotometric determination of iron with quinolinic ...

324 AN'ALYTtCA CI1IMICA ACTA VOL. 21 (1959) Sl'ECTKOPHOTOMEIRrC DETERMINATION OF IRON WITH QUINOLINIC ACID A. 1\. MAJIIMUAK ANO S. \'. HAG Dcftarliittiitt ri/ Inoi'ifiiiiir aiid Analytical Chcmistyy, Judtwfi^y Univcniily, Calcutta {India) Quinolinic acid as a reagent for the gravimetric and volumetric estimation of pi'lL'idium lias already been described'.

Flame photometric determination of potassium in sea water ...

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 studied. The major constituents of sea water showed no spectral interference on the potassium analysis. Chloride ions and sulphuric acid gave a ...

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

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, Magnesium ...

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

Determination of Potassium by flame photometry - Labmonk

Potassium Standard Calibration Solutions. Deionized water is used for the “blank”. A series of volume icluding 1.00, 2.00, 3.00, 4.00, and 5.00 mL of the standard 100-ppm potassium solutions were taken into the first, second, third, fourth, and fifth 100-mL volumetric flasks, respectively and separately.

Determination of sodium and potassium by flame

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 3.5 -

Determination of potassium with an ion-selective electrode

May 03, 2021 · Determination of potassium with an ion-selective electrode. Potassium is one of the most common elements and can be found in many different minerals and other potassium compounds. It is of importance for humans, animals and plants as it is an essential mineral nutrient and involved in many cellular functions like cell metabolism and cell growth.

Flame Photometric Estimation

Jul 26, 2021 · Flame Photometric Estimation 1. Flame Photometric Estimation of Sodium and Potassium Ion Present In Water Sample of Darna and Godavari River Presented by:- Mr. Pritam P. Kolge M. Pharm 2nd Year Sem IV Department of Pharmaceutical Quality Assurance 1 Journal Club Faculty:- Mr. V. A. Thorat Assistant Professor, Department of Pharmacognosy Guide:- Dr. P. B.

Separation and Direct Photometric Determination of ...

metric method, using a chromate ion.6-17 Such an analytical system is now called "Capillary Ion Anal-ysis".18 As a photometric reagent, phthalate13,17"9, 2,3-naphthalene-dicarboxylate17, and pyromellitate17,2° ions have been investigated. However, the methods with a

Flame Photometric Determination of - JSTOR

Flame Photometric Determination of Lithium in Water-Marvin J. Fishman A contribution to the Journal by Marvin J. Fishman, Chemist, USGS, Denver, Colo. Publication of this article is authorized by the Di-rector, USGS. is a minor constituent of some minerals but is not abundant in nature. From available informa-tion, lithium concentrations in natural

(PDF) Derivatives of carbohydrazide, thiocarbohydrazide ...

The photometric determination can be performed at any con- venient p H within the intervals for constant absorbance, but the low p H range is better with P M A T because the selectivity for iron is increased and the tendency for metal ions to hydrolyse is mini- mized. ... which then remains in the organic phase, presumably as an ion-association ...

Colorimetric determination of potassium in whole blood ...

Sep 01, 1985 · Abstract. 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. The colored anion is extracted into an organic solvent, clarified by centrifugation, and ...

Errors in Use of Model 18 Perkin-Elmer Flame Photometer ...

Flame Photometric Determination of Silver in Cadmium and Zinc Sulfide Phosphors. ... Flame Photometric Determination of Sodium and Potassium. Analytical Chemistry 1954, 26 (3 ... Analytical methods used in studies on continuous separation of ions by countercurrent ion exchange. Analytica Chimica Acta 1954, 11 , 538-549 ...

510(k) SUBSTANTIAL EQUIVALENCE DETERMINATION

21CFR Sec.-862.2160-Discrete photometric chemistry analyzer for clinical use 2. Classification: Class II for assays Class I for analyzer (reviewed as part of Class II test systems) 3. Product code: CFR - hexokinase, glucose JGS - electrode, ion specific, sodium CEM - electrode, ion specific, potassium CGZ - electrode, ion-specific, chloride

Photometric Determination of Octadecylamine with Methyl ...

Oct 13, 2004 · Optimal conditions of the reaction were found. It was demonstrated that 50- to 200-fold amounts of lower aliphatic and aromatic amines and salts of lower quaternary ammonium bases do not interfere with the determination. Procedures were developed for the photometric determination of 0.083–1.0 μg/mL and 0.74–10 μg/mL octadecylamine.

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