High Frequency Titrations. XIII. Studies on Concentration Curve by Capacitance-type Instrument

• Published in: Pharmaceutical Bulletin Vol. 3; no. 2; pp. 138 - 143
• Main Author: Kamura, Yuichi
• Format: Journal Article
• Language: English
• Published: Japan The Pharmaceutical Society of Japan 01.04.1955
• Subjects: Chemistry Techniques, Analytical; Electric Capacitance; Old Medline; CHEMICAL ANALYSIS
• ISSN: 0369-9471; 1881-1345
• DOI: 10.1248/cpb1953.3.138

Studies on the theory of high-frequency analysis are becoming numerous but some of their reports contain doubtful points as to the formulation of such theories. The present studies were made in order to examine the method of theoretical formulation and it has become clear that different experimental results are obtained from identical phenomena according to the method of measurements employed. In formulating a theory in high-frequency analysis, the point to note is the actual method of measurements. In other words, a theoretical formulae which agree with the method of measurements must be obtained. The variations of electric current, electric voltage, and cycles measured by oscillating or receiver type cannot be directly explained by the results obtained through measurement by the bridge. In order to explain theoretically the experimental results obtained by the analytical apparatus currently used, high frequency wave was directly applied to solutions and the nature of the changes were examined by the bridge. Correlation of such a change and indirect measurement through the wall of the beaker was sought. Based on there results, a theoretical formula which would support the method of measurements by the currently used analytical apparatus was obtained. By making concrete calculations, uniform explanations for concentration curves in general were made. Some improvements were also made for drawing up theoretical curves for the existing indirect measurement.