• Determination of low environmental free cyanide

    2021-3-17 · It exists in fresh water systems in low concentra-tions and originates from naturally occurring degradation ion and gas chromatographic procedures) only canachieveLOQsabove1μgL−1 needed for photometric determination of free cyanide accord-ing to ISO 14403-2 (ISO 2012).Therefore possibleoxidizers

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  • Determination of low environmental free cyanide

    2021-3-17 · It exists in fresh water systems in low concentra-tions and originates from naturally occurring degradation ion and gas chromatographic procedures) only canachieveLOQsabove1μgL−1 needed for photometric determination of free cyanide accord-ing to ISO 14403-2 (ISO 2012).Therefore possibleoxidizers

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  • West African Journal of Applied Ecology vol. 11 2007

    2014-3-27 · Fluoride was measured by the Ion Chromatograph (IC) method using Peaknet-Control Panel Dionex-80 System while sodium and potassium were analysed by the Flame Photometric method using a Digital Flame Analyzer-Gallenkamp FGA-350L. Iron (Fe) and manganese (Mn) concentra-tions were determined using Unicam 969 Atomic Absorption Spectrophotometry (AAS).

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  • PRACTICAL 2 DETERMINATION OF SODIUM AND

    2002-10-18 · 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

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  • Analytical application of the reaction system phenyl

    2017-2-3 · potassium hydroxide in ethanol and then repeatedly well rinsed by tap distilled and deionized water. All concentrations described here are the initial concentra-tions in the reaction mixture at time zero after mixing. Each kinetic result is the average of five determina-tions. Procedure

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  • ANALYTICAL HANDBOOK FOR THE DETERMINATION OF

    2012-12-13 · The cocrystallization and photometric technique as described by Portman and Riley (1964) is outlined below. 1. Ascorbic Acid 5 W/V Reagents 2. Thionalide (thioglycollic- 8 -aminonaphthalide) 2 W/V in acetone 3. Sulphuric Acid 5N) 4. Ascorbic Acid 0.1 m (prepare daily) 5. Potassium Antimonyl Tartrate 0. 274 6. Ammonium Molybdate 4. 8

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  • Photometric Determination of Octadecylamine with Methyl

    2004-10-13 · The reaction of octadecylamine with Methyl Orange in water at pH 2.5–4.0 was studied. Linear relationships were revealed between the decrease in the absorbance of an aqueous solution of Methyl Orange and the concentration of octadecylamine. 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

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  • A Simple Atomic Absorption Photometer for Water Analysis.

    2020-10-13 · with calcium magnesium and potassium chlorides. For the determination one milliliter of the buffer is mixed with 25 milliliters of the water to be analyzed. Photometric mea­ surements are made in comparison with standard solutions which also contain the buffer (31). B. POTASSIUM Potassium can be determined gravimetrically by precipit­

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  • Characterization of Potassium-Selective Optode

    In the potassium ion calibration curve of membrane II the citrate buffer of pH 6.5 was used. For the determination of the cesium and rubidium ion calibra-tion curves a phosphate buffer of pH 7.7 (0.009 M Na2HP04 adjusted with NaH2P04) was applied." The pH values were determined with a

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  • A comparison of the measurementofsodium and electrode

    2018-2-16 · 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

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  • 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.

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  • RAPID AND SIMPLE STABILITY INDICATING HPLC

    2017-12-21 · amperometric (7) and photometric (8) detection capillary zone electrophoresis (9) amperometric biosensor enantioselective analysis of S-cilazapril (12) and voltammetric determination (13). Spectrophotometry (14ñ16) and capillary elec-trophoresis (17) were used for determination of cilazapril in the presence of hydrochlorothiazide.

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  • The determination of benzalkonium chloride in eye drops

    2019-12-4 · determination are shown in Fig.1) The measurement of the rate of changing of light absorption vs time (tg α min-1) can be used for quantitative determination of BAC. The de-pendence of inhibition degree on the inhibitor concentra-tion was used for plotting of the calibration curve. Its line-arity allows to assay the BAC by the standard method

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  • 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

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  • Characterization of Potassium-Selective Optode

    In the potassium ion calibration curve of membrane II the citrate buffer of pH 6.5 was used. For the determination of the cesium and rubidium ion calibra-tion curves a phosphate buffer of pH 7.7 (0.009 M Na2HP04 adjusted with NaH2P04) was applied." The pH values were determined with a

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  • West African Journal of Applied Ecology vol. 11 2007

    2014-3-27 · Fluoride was measured by the Ion Chromatograph (IC) method using Peaknet-Control Panel Dionex-80 System while sodium and potassium were analysed by the Flame Photometric method using a Digital Flame Analyzer-Gallenkamp FGA-350L. Iron (Fe) and manganese (Mn) concentra-tions were determined using Unicam 969 Atomic Absorption Spectrophotometry (AAS).

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  • Characterization of Potassium-Selective Optode

    In the potassium ion calibration curve of membrane II the citrate buffer of pH 6.5 was used. For the determination of the cesium and rubidium ion calibra-tion curves a phosphate buffer of pH 7.7 (0.009 M Na2HP04 adjusted with NaH2P04) was applied." The pH values were determined with a

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  • ANALYTICAL HANDBOOK FOR THE DETERMINATION OF

    2012-12-13 · The cocrystallization and photometric technique as described by Portman and Riley (1964) is outlined below. 1. Ascorbic Acid 5 W/V Reagents 2. Thionalide (thioglycollic- 8 -aminonaphthalide) 2 W/V in acetone 3. Sulphuric Acid 5N) 4. Ascorbic Acid 0.1 m (prepare daily) 5. Potassium Antimonyl Tartrate 0. 274 6. Ammonium Molybdate 4. 8

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  • R- 284Determination of Sodium Potassium

    2016-2-25 · 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

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  • Flame Photometric Determination of

    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

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  • Characterization of Potassium-Selective Optode

    In the potassium ion calibration curve of membrane II the citrate buffer of pH 6.5 was used. For the determination of the cesium and rubidium ion calibra-tion curves a phosphate buffer of pH 7.7 (0.009 M Na2HP04 adjusted with NaH2P04) was applied." The pH values were determined with a

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  • The determination of benzalkonium chloride in eye drops

    2019-12-4 · determination are shown in Fig.1) The measurement of the rate of changing of light absorption vs time (tg α min-1) can be used for quantitative determination of BAC. The de-pendence of inhibition degree on the inhibitor concentra-tion was used for plotting of the calibration curve. Its line-arity allows to assay the BAC by the standard method

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  • A new and sensitive reaction rate method for

    2017-8-24 · mate ion to produce Br 2 which cause an increase in the reaction rate. A catalytic cycle is shaped when MCP re-acts with the produced Br 2 and convert to a colorless ingredient. Figure 1a shows the result of decrement in MCP absorption at λ max =525 nm with time. It was found that TU ion has an inhibition effect on the cata-

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  • Flame Photometric Determination of

    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

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  • Simplified measurement of p-aminohippurate and other

    2016-1-7 · photometric readings at 465 nm rather than at 450 nm or by urease pretreatment of the sample. This simplified method should be useful in analyzing biological fluids for primary arylamines and especially for the determination of p-aminohippuric acid in renal function studies. Determination simplifiée du para-amino hippurate et des autres

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  • inhalation occurBMJ

    the photometric method of Zall et al.-Results The figure shows that the bicarbonate concentra-tions were low at the time of diagnosis (6 and 15-5 mmol/l respectively) andtookabouttwomonthsof treatment to be corrected. The chloride concentra-tionstookfar longertobecorrected andevenaftera year s treatment the values in both infants were in the

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  • RAPID AND SIMPLE STABILITY INDICATING HPLC

    2017-12-21 · amperometric (7) and photometric (8) detection capillary zone electrophoresis (9) amperometric biosensor enantioselective analysis of S-cilazapril (12) and voltammetric determination (13). Spectrophotometry (14ñ16) and capillary elec-trophoresis (17) were used for determination of cilazapril in the presence of hydrochlorothiazide.

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