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Article
Auswahl optimaler Meßwellenlängen bei der spektroskopischen Mehrkomponenten-Analyse
Several types of optimization of wavelengths in multicomponent analyses are discussed. Usually the wavelengths of absorbance maxima are used. According to Kaiser the selectivity of any wavelength may be calcul...
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Article
Auswertung digitaler Titrationskurven nach dem Tubbs-Verfahren
In 1954 Tubbs described a graphic method for locating the endpoint in recorded potentiometric titrations. Approximation of digital titration curves by hyperbolas and taking the curvature in the apex of each hy...
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Article
Rechnerunterstützte Polarographie
In the computer controlled evaluation in polarography one problem is to find mathematical criteria to approximate the baseline. Two modell functions are described in this paper: a three-parametric exponential ...
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Article
Berichtigung
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Article
Fehler und Fehlerfortpflanzung beim Arbeiten mit ionensensitiven Elektroden
For making use of the whole working range of ion-sensitive electrodes, it is often preferred to measure the potentials at various concentrations in order to get a straight line of potentials versus logarithm o...
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Article
Fehler und Fehlerfortpflanzung bei der Bestimmung von pH-Werten
For the determination of absolute pH-values by combined glass electrodes the parameters of the electrode are determined by a straight-line calibration curve after measurement of some NBS-buffers. The numerical...
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Article
Zur quantitativen Fettbestimmung in Drogen
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Article
Calorimeter