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An Experimental Device for Measuring the Ultrasonic Absorption by Means of a Differential Method

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Ultrasonic methods have proved to be a valuable instrument for relaxation studies of fast chemical reactions in solutions. This paper presents a new ultrasonic method based on a differential measurement using a reference liquid. The essential advantage of this method is its applicability over a wide range of frequencies. With ΔV ≈ 20 to 25 cm3/mole measurements in aqueous solutions are still possible at concentrations of 10−3 M of the reagent. An experimental equipment for the frequency range 5.5 MHz to 82.5 MHz is described, and first results are reported concerning the protolytic reaction of the amino group of the amino acid lysine.
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Document Type: Research Article

Publication date: January 1, 1969

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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