منابع مشابه
Polarographic determination of malononitrile.
A procedure is proposed for the determination of malononitrile by differential pulse polarography in methanolic 0.1M tetraethylammonium iodide/0.001M tetramethylammonium hydroxide as the supporting electrolyte. In this medium malononitrile is chemically converted into an electroactive species. With close control of timing of the steps in the procedure the error of the method is +/-1.5% in the c...
متن کاملThe polarographic determination of selenium in urine.
Polarographicdata are presented for the reduction of selenite ion in 3M sulfuric acid, 1M potassium chloride, and 1M ammonia-ammonium chloride. In these first two media two waves are obtained correspondingto the diffusion-controlled reduction of selenite ion to selenium amalgam and the adsorption of selenite ion on the mercury drop, respectively. One wave is obtained in ammonia-ammonium chlorid...
متن کاملPolarographic determination of oxygen tension of whole blood.
The purpose of this study is to establish a procedure for the direct determination of oxygen tension of whole blood that requires a smaller sample and simpler manipulation than methods previously reported (1). A procedure has been worked out for determining dissolved plasma oxygen which proved satisfactory in our investigations. Since the success of the application of the proposed polarographic...
متن کاملDifferential pulse polarographic determination of murine metallothionein induction kinetics.
Quantitative determination of tissue levels of metallothionein was performed using differential pulse polarographic analysis. Cadmium induction of mouse hepatic metallothionein was observed to be linear with respect to dose until a sharp saturation maximum was reached. This metal-stimulated synthesis was completely inhibited by actinomycin D. It was found that a 2- and 7-fold molar excess of co...
متن کاملPolarographic Determination of Traces of Gold in Blood and Serum.
A polarographic method for the determination of as little as 1 pig. of gold in blood and serum samples is described. The relative error is 2.1%. After the sample is dry ashed at 550#{176}, the gold is extracted into ether as the chloride, to separate it from interfering copper and iron. A polarogram of the gold sample is obtained in 2 M potassium hydroxide. The method should be applicable to th...
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ژورنال
عنوان ژورنال: Nature
سال: 1961
ISSN: 0028-0836,1476-4687
DOI: 10.1038/1901003a0