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Standard solutions in quantitative organic microanalysis

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Mikrochemie

Summary

It has been shown that a 0,01 N potassium bi-iodate solution can be substituted for the standard 0,01 N hydrochloric acid used in all acidimetric and alkalimetric titrations employed in quantitative organic microanalysis. The same solution also serves as a standard for the 0,01 N sodium thiosulfate solution used in iodometric titrations. No influence (oxidation, etc.) upon the organic compound nor the organic solvents employed in these titrations was observed, nor were there any changes necessary in the various procedures. This substitution results in simplification in the preparation and standardization of the various solutions involved, and furthermore, eliminates the use of a microchemical balance altogether.

Zusammenfassung

Es konnte gezeigt werden, daß eine 0,01 n-Lösung von Kaliumbijodat die 0,01 n-Salzsäure in allen acidimetrischen und alkalimetrischen Titrationen in der quantitativen organischen Mikroanalyse zu ersetzen vermag. Die gleiche Lösung kann zur Stellung der 0,01 n-Natriumthiosulfatlösung verwendet werden. Der Gebrauch einer Kaliumbijodatlösung vereinfacht die ganze organische mikrochemische Maßanalyse, um so mehr als zur Herstellung und Titerstellung aller nötigen Lösungen der Gebrauch einer Mikrowaage sich erübrigt.

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Contribution from the Chemical Laboratories of New York University

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Niederl, J.B., Niederl, V. & Eitingon, M. Standard solutions in quantitative organic microanalysis. Mikrochemie 25, 143–150 (1938). https://doi.org/10.1007/BF02714757

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  • DOI: https://doi.org/10.1007/BF02714757

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