Microdetermination Of Metals Research Articles

Microdetermination of metals in organometallic compounds by the oxine method after oxygen flask combustion: V. Europium, gadolinium, gallium, and indium

The oxine method after oxygen flask combustion which was used earlier for determining cadmium, magnesium, uranium, zinc, cobalt, manganese, titanium, lanthanum, molybdenum, thorium, neodymium, praseodymium, semarium, and yttrium has now been applied in the determination of europium, gadolinium, gallium, and indium in some of their organometallic compounds. Gravimetric (method I) and volumetric (methods II and III) procedures are applied using a single sample weight. The average percent error for the determination is ± 0.07, ± 0.05, and +- 0.06% for methods I, II, and III, respectively.

Microdetermination of metals in organometallic compounds by the oxine method after oxygen flask combustion: IV. Neodymium, praseodymium, samarium, and yttrium

The oxine method after oxygen flask combustion was extended for the microdetermination of neodymium, praseodymium, samarium, and yttrium in their organometallic compounds. The metal content is determined gravimetrically (Method I) and volumetrically (Methods II and III) using a single sample weight. The method has the advantage of a favorable gravimetric factor, besides a sufficiently sharp endpoint with 12-fold amplification reaction in case of titrimetric finish. The average percent error for the determination is ±0.07, ±0.06, and ±0.07 for Methods I, II, and III, respectively.

Microdetermination of Metals in Organometallic Compounds by the Oxine Method, Closed Flask or Open Tube Decomposition

Microdetermination of Metals in Organometallic Compounds by the Oxine Method, Closed Flask or Open Tube Decomposition

Microdetermination of metals in organometallic compounds by the oxine method after closed flask combustion

Microdetermination of metals in organometallic compounds by the oxine method after closed flask combustion

Microdetermination of metals in organometallic compounds by the oxine method after oxygen flask combustion: II. Cobalt, manganese, and titanium

The microdetermination of metals in organometallic compounds by the oxine method after the oxygen flask combustion is used for cobalt, manganese, and titanium. The determinations are carried out gravimetrically (method I) and volumetrically (methods II, III) for the three metals, using a single sample weight. The method has the advantage of a favorable gravimetric factor, besides a sufficiently sharp end point with 8-fold amplification reaction in case of titrimetric finish.

Microdetermination of metals in organometallic compounds by the oxine method after oxygen flask combustion: I. Cadmium, magnesium, uranium, and zinc

A simple, accurate, and relatively rapid procedure for the estimation of cadmium, magnesium, uranium, and zinc in organometallic compounds is presented. The oxygen-filled flask is recommended for decomposition of the organic sample. Determination of the metal concerned is carried out by three methods using a single sample weight. Both the gravimetric and titrimetric finishes are applied. The method has the advantage of a favorable conversion factor for the gravimetric determination besides an 8- or 12-fold amplification reaction, depending on the valency of the metal, in case of the titrimetric finish.

Fluorescence techniques in the microdetermination of metals in biological materials III. Method for complexometric determination of magnesium in small serum samples

A method has been developed for the complexometric determination of magnesium in 25–250 μl of serum. The technique employs the fluorescent indicator 2,4-bis[ N,N′-di(carboxymethyl)aminomethyl] fluorescein and the chelating agent 1,2-diaminocyclohexanetetraacetic acid at alkaline pH.

Fluorescence techniques in microdetermination of metals in biological materials. II: An improved method for direct complexometric titration of calcium in small serum samples

A method has been developed for the precise complexometric determination of calcium in 10–100-μl samples of serum without interference from magnesium or phosphate. The technique employs the fluorescent indicator 2,4-bis[ N,N′-di(carboxymethyl)aminomethyl]fluorescein at alkaline pH.

Fluorescence Techniques in the Microdetermination of Metals in Biological Materials. Utility of 2, 4-Bis-[N,N´-di-(carboxymethyl)aminomethyl] Fluorescein in the Fluorometric Estimation of Al+3, Alkaline Earths, Co+2, Cu+2, Ni+2, and Zn+2 in Micromolar Concentrations.

Fluorescence Techniques in the Microdetermination of Metals in Biological Materials. Utility of 2, 4-Bis-[<i>N</i>,<i>N</i>´-di-(carboxymethyl)aminomethyl] Fluorescein in the Fluorometric Estimation of Al⁺³, Alkaline Earths, Co⁺², Cu⁺², Ni⁺², and Zn⁺² in Micromolar Concentrations.

The Micro-determination of Metals in Salts

The Micro-determination of Metals in Salts