Polarographic Determination Of Molybdenum Research Articles

Catalytic Kinetic Polarographic Determination of Molybdenum in Food with the Molybdenum(VI)-hydrazine-ethyl Orange System

Abstract This method is based on the catalytic effect of Mo(VI) on the redox reaction between ethyl orange and hydrazine sulfate in sulphuric acid medium at 100°C, and in 0.03 mol/L H2SO4 - 0.30 mol/L NH3-H2O supporting electrolyte. Ethyl orange exhibits a sensitive polarographic wave at -0.52 V vs. SCE and change of ethyl orange concentration is traced by a polarographic detection technique. The detection limit and the linear range of Mo(VI) are 3.54 ng/mL and 20 to 300 ng/mL respectively. This new catalytic method has been applied to the determination of molybdenum in food, with satisfactory results.

Polarographic determination of molybdenum in water

AbstractA direct method for determination of Mo(VI) at trace levels in water samples is described. The reaction used, between salycilaldoxime, bromate, and Mo(VI), produces a differential pulse catalytic peak proportional to the Mo(VI) concentration. A detection limit of 0.12 μg/L can be achieved. The procedure, which has been applied to several natural and tap water samples by means of a standard additions method, achieved satisfactory results. A computer‐based system that controls these experiments is also discussed.

Polarographic determination of molybdenum after extraction of its N-benzoyl-N-phenylhydroxylamine complex

A sensitive and specific method for the DC-polarographic determination of molybdenum has been described. The molybdenum complex of N-benzoyl-N-phenylhydroxylamine can be extracted into chloroform and subjected to polarography after mixing with aqueous perchloric acid and methanolic lithium chloride. Effects of different acids, solvents and supporting electrolytes on the system have been studied. The current increases linearly from 5×10−6 to 1×10−4 M molybdenum and the metal can be determined in presence of almost all the other metal ions and a number of complexing agents. Application of the method is made to the determination of small amounts of molybdenum in steel.

Polarographic behaviour of Mo(VI) at dropping Mercury Electrode in Aqueous H2SO4 and Polarographic Determination of Molybdenum in presence of Vanadium

Polarographic behaviour of Mo(VI) at dropping Mercury Electrode in Aqueous H2SO4 and Polarographic Determination of Molybdenum in presence of Vanadium

The polarographic determination of molybdenum in niobium-base alloys

The polarographic determination of molybdenum in niobium-base alloys

Polarographic determination of molybdenum in uranium-molybdenum alloys

A polarographic method is described for the determination of Mo in the range of 0.01 to 1.0% in U-Mo alloys. A binary alloy of U and Mo when analyzed by the proposed method gave a Mo result of 0.033%. The accuracy of the determination is plus or minus 3%. (P.C.H.)

Polarographic Determination of Molybdenum in Rocks and Ores.

Polarographic Determination of Molybdenum in Rocks and Ores.

Polarographic Determination of Molybdenum(VI)

Polarographic Determination of Molybdenum(VI)

Polarographic Determination of Molybdenum in Presence of Tungsten

Polarographic Determination of Molybdenum in Presence of Tungsten

Polarographic Determination of Molybdenum in Titanium Alloys

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolarographic Determination of Molybdenum in Titanium AlloysMaurice Codell, J. J. Midula, and George NorwitzCite this: Anal. Chem. 1953, 25, 10, 1441–1443Publication Date (Print):October 1, 1953Publication History Published online1 May 2002Published inissue 1 October 1953https://doi.org/10.1021/ac60082a006RIGHTS & PERMISSIONSArticle Views20Altmetric-Citations12LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (408 KB) Get e-Alerts Get e-Alerts

Use of complexones in chemical analysis. XX. Polarographic determination of molybdenum

Use of complexones in chemical analysis. XX. Polarographic determination of molybdenum