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The Determination of Calcium in Natural Waters

purate is employed following isolation of the calcium by ion-exchange chromatography,. Calcium . with potassium permanganate (Kirk and. Moberg .. Spectrophotometric estimation of the con- . prcssions for the free calcium ion concentra-.

Soluble ions in salt-affected plants - Plantstress

maintenance of a high K+/Na+ ratio in the cytoplasm is also essential (3). . The concentra- tion is always less . Flame photometry is an atomic emission method for the rou- .. achieve a homogenous representative sample for ion analysis. 1.

Effects of Potassium Ion Concentrations on the Antimicrobial

Jul 10, 1987 . study evaluated the effects of the potassium ion concentra- . b Concentrations were measured by flame spectrophotometry after dilution.

A REFERENCE MEIH0D F0R THE DETERMINATION 0F

for High Accuracy Spectrophotometry, NBS. Spec. Publ. .. Determination of Sodium in Serum, NBS Spec. Publ. 260-60 .. Concentra ti on of serum 1ithium reported by the + ions of lithium, were prepared at the CDC by Dr. David Bays e.

The Determination of Mercury by Cold Vapor Atomic . - Agilent

air-acetylene burner is used for the determination of mercury by the . ions producing ground state atomic mercury. . Results obtained can be affected by the type and concentra- . are potassium permanganate and perchloric acid [5], nitric.

Determination of hypochlorite in waters by stopped-flow .

. for its determination most of them are titrimetric and spectrophotometric [1,2], . As many metal ions enhance the luminescence of the luminol reaction in the . hypochlorite solutions were prepared from sodium hypochlorite (Carlo Erba) .. parameters varied linearly or almost linearly with the hypochlorite concentra- tion.

Kinetics of potassium release from biotite in solutions containing .

rates are necessary to maintain a relatively low concentra tion in solution. On the . center of interlayer K ions to the seat of a charge in the tetrahedral sheet as direct flame photometric determination of K (KTPB) dissolved in acetone-water.

R637 A laboratory manual for the determination of metals in water .

DETERMINATION OF CALCIUM, MAGNESIUM, POTASSIUM. AND SODIUM (direct . means of atomic absorption spectrophotometry. . ion-exchange and co-precipi tat ion. .. The optimum concentration range usually starts from a concentra.

THE DETERMINATION OF SODIUM, POTASSIUM AND TITANIUM .

Sodium by Flame Spectrophotometry. 67. 20. Emission . Results of Flame Photometric Determination of Sodium pecially where the concentration of interfering ions is high, interferences solutions were prepared holding the concentra-.

Solid-Phase Colorimetric Determination of Potassium

an aqueous solution containing potassium ion and a de- tectable anion . by flame photometry or ion-specific potentiometry. In ion- specific potentiometry.

Potassium activities in cell compartments of salt-grown barley leaves

been more difficult to determine because the small volume of this compartment . 2000), raising the possibility that cytosolic ion concentra- tions may also vary . photometry on sap extracts prepared according to Fricke et al. (1994) from 1 cm.

Photometric Determination of Potassium

THE estimation of potassium in solutions of plant ash . By carrying several known concentra- . ammonium ion is the only one which will interfere seriously,.

Studies on the Mechanism of Potassium-stimulated . - Microbiology

An enhancing effect of potassium ions on bacterial respiration has been . washed organisms were suspended in 0.25 M-sucrose solution to a final concentra- . and flame photometric determination of potassium were then performed as de-.

DETERMINATION OF CATIONS IN GROUND WATERS

Flame photometry provides a simple method whose advantages for . The direct flame photometric determination of most cations in ground . for determining sodium and potassium, employing ion exchange as a .. The concentra- tions are.

flame-photometric determination of dissolved . - OSA Publishing

amounts of one ion in the presence of fixed amounts of the other three. Based on repetitive . determine calcium, magnesium, sodium, and potassium in sucrose solution (4). . Silicon a~nd aluminum, in the concentra- tions encountered in.

SELECTION OF ANALYTICAL METHODS FOR THE .

Among the analytical methods for determination of nitrate and nitrite in vegetables three . the nitrite ion is used as a preservative and bactericide in . 2 Cleve's Acid reagent spectrophotometry. 3 Steam . Salt bridge saturated in potassium sulphate and To determine nitrite ion and noting its concentra- tion range in.

DETERMINATION OF CATIONS IN GROUND WATERS

Flame photometry provides a simple method whose advantages for . The direct flame photometric determination of most cations in ground . for determining sodium and potassium, employing ion exchange as a .. The concentra- tions are.

Activities of Potassium and Sodium Ions in Rabbit . - BioMedSearch

results emphasize that potassium equilibrium potentials in heart muscle should . emission spectrophotometry (Instrument Laboratory, Inc., West Seattle, Wash., .. activities can be calculated from the activity coefficient and their concentra-.

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