Results 181 to 190 of about 5,540 (243)
Some of the next articles are maybe not open access.
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.
Zhi-yi Li +5 more
openaire +3 more sources
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 ...
R. Weiss, H. Flaschka
openaire +2 more sources
Technical facilities for automated titrimetry [PDF]
Measurement Techniques, 1994 The state of the art in titrimetry is surveyed together with methods and means of automating it.
R. M. F. Salikhdzhanova, B. M. Mar'yanov
openaire +1 more source
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.
Zahra Ramezani +2 more
openaire +2 more sources
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.
Zahra Ramezani +2 more
openaire +2 more sources
Determination of insoluble azides by thermometric titrimetry
Talanta, 1977A method for determination of azide, based on the thermometric titration of this anion with hydrochloric acid, is described. Although this reaction has a large enthalpy change (DeltaH = -3.6 kcal/ mole), sulphate is added as an endothermic thermometric indicator to improve the end-point. The application of the method to the analysis of insoluble azides
J.L.M. Costa +2 more
openaire +3 more sources
Titrimetry in Glacial Acetic Acid. Scope of Method
, 1951 P. C. Markunas, John A. Riddick
openalex +2 more sources
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
openaire +3 more sources
Phenol determination by thermometric titrimetry
Thermochimica Acta, 1989Abstract Some thermometric titrimetry data are reported for the phenol, p-nitrophenol, p-methoxyphenol and pl-ienol/pentachlorophenol - thallium ethoxide interactions in benzene as solvent. These thermochemical data are interpreted in terms of the structure of the relevant phenol and ‘end-point curvature’ is rationalised in terms of a phenoxide ion ...
John O. Hill, S. Korce
openaire +2 more sources
Data analysis in thermometric titrimetry
Thermochimica Acta, 1983Abstract The application of a microprocessor and a high level programming language (BASIC) is described for data acquisition and data analysis in thermometric titrimetry. The results derived by the microprocessor for the standard thermochemical test reactions THAM/HCl, NaOH/HClO4 and NaOH/H2SO4 are in excellent agreement with those obtained using a ...
John O. Hill +2 more
openaire +2 more sources
2011
Der pH-Wert ist ein Mas fur die Wasserstoffionen-Konzentration c(H+) in Wasser und in allen wassrigen Losungen. Er ist als der negative dekadische Logarithmus der molaren Wasserstoffionen-Konzentration festgelegt (von lat. potentia hydrogenii = Macht des Wasserstoffs) und wurde 1909 von dem danischen Chemiker Soren Peter Lauritz Sorensen (1868–1939 ...
Bruno P. Kremer, Horst Bannwarth
openaire +2 more sources
Der pH-Wert ist ein Mas fur die Wasserstoffionen-Konzentration c(H+) in Wasser und in allen wassrigen Losungen. Er ist als der negative dekadische Logarithmus der molaren Wasserstoffionen-Konzentration festgelegt (von lat. potentia hydrogenii = Macht des Wasserstoffs) und wurde 1909 von dem danischen Chemiker Soren Peter Lauritz Sorensen (1868–1939 ...
Bruno P. Kremer, Horst Bannwarth
openaire +2 more sources