Results 201 to 210 of about 4,436 (242)
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Highly Accurate Nephelometric Titrimetry
Journal of Pharmaceutical Sciences, 2004To indicate the titration end-point of precipitation reaction by measuring the relative intensity of the scattered light in the titrate for use in pharmaceutical analysis.A visible light-emitting diode (LED) was used as a light source and a photodiode was used as the optical detector. Light on the detector creates an electric current through the diode.
Xiancheng, Zhan +5 more
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Determination of potassium by titrimetry
Talanta, 1966Epp's method is modified by the addition of solid calcium hydroxide to the sample solution. This simplified the procedure, increased the rapidity and lessened the sources of error. With samples containing various ions except ammonium ion, potassium (conc. of KCl 0.25 to 1.8 x 10(-2)M) was determined within 0.4% of error, by means of corrections for the
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Fresenius' Zeitschrift für analytische Chemie, 1983
The universal titration system described is especially designed for potentiometric and photometric routine titrations. The flow system implies the possibility to titrate liquid samples directly without pipetting. The interpolation of the endpoint is based on only 4–10 increments. The outstanding reproducibility of ±0.2% S.D.
H. Bartels, P. Walser
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The universal titration system described is especially designed for potentiometric and photometric routine titrations. The flow system implies the possibility to titrate liquid samples directly without pipetting. The interpolation of the endpoint is based on only 4–10 increments. The outstanding reproducibility of ±0.2% S.D.
H. Bartels, P. Walser
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Titrimetry at a metrological level
Metrologia, 2003In the 1990s the CCQM (Comite consultatif pour la quantite de la matiere) defined the term 'primary method'. It also identified some methods that are considered to be primary. One of these methods is titrimetry. In this paper, the principle of titrimetry and two practical examples performed at the highest metrological level in the frame of key ...
Helene Felber +2 more
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2014
In this chapter we focus in more detail on the underpinning quantitative theory of volumetric analysis, starting with solving complex equilibrium problems using the so-called systematic approach to equilibrium. The fractional composition concept is then introduced as a means of representing complex data in a single format.
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In this chapter we focus in more detail on the underpinning quantitative theory of volumetric analysis, starting with solving complex equilibrium problems using the so-called systematic approach to equilibrium. The fractional composition concept is then introduced as a means of representing complex data in a single format.
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2014
Redox reactions play a major role in modern volumetric analysis and have found application in the analysis of many commercial products. In this chapter a summary of redox chemistry is presented which is contextualised by the following practical activities: standardisation of potassium permanganate; determination of iron in spinach; standardisation of ...
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Redox reactions play a major role in modern volumetric analysis and have found application in the analysis of many commercial products. In this chapter a summary of redox chemistry is presented which is contextualised by the following practical activities: standardisation of potassium permanganate; determination of iron in spinach; standardisation of ...
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Analytica Chimica Acta, 1996
Abstract A solid based titrimetric method is introduced in which a solid titrant is poured to a solution by a vibrating spatula fixed to the pan of a balance. The spatula, the balance, and the responses of the detector are measured and controlled by a personal computer.
Norooz Maleki +2 more
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Abstract A solid based titrimetric method is introduced in which a solid titrant is poured to a solution by a vibrating spatula fixed to the pan of a balance. The spatula, the balance, and the responses of the detector are measured and controlled by a personal computer.
Norooz Maleki +2 more
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Titrimetry with solid titrants
Mikrochimica Acta, 1968The technique of solid titrant titrimetry has been described and its advantages enumerated. Precision and time required have been determined to be comparable with those of conventional titrimetry. Investigations with solid titrants have been made of the photometric titrations of Cu with EDTA, Fe(II) with KMnO4, As(III) with KMnO4, and Fe(III) with ...
H. Flaschka, R. Weiss
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2014
The application of coordination chemistry to volumetric analysis is a newer approach than the other major classes, largely because it is based on the use of synthetic polydentate ligands such as EDTA. In this chapter a summary of coordination chemistry is presented which is contextualised by the following practical activities: standardisation of EDTA ...
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The application of coordination chemistry to volumetric analysis is a newer approach than the other major classes, largely because it is based on the use of synthetic polydentate ligands such as EDTA. In this chapter a summary of coordination chemistry is presented which is contextualised by the following practical activities: standardisation of EDTA ...
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