Potentiometric titration with EDTA using ferric-ferrous system as an indicator

ARM - Based Automatic Potentiometric Titration System

Accurate measurement and analysis are very important tasks for many applications ranging from industrial operations, analytical laboratories to biological processes. In modern analytical chemistry, automatic titrators have more prominence than manual interpretations. Various instruments have been developed and proposed in the past to carry out potentiometric titrations. Also there are suppliers...

The determination of iron in organic substances: Micro-colorimetry as ferric thiocyanate. II. Potentiometric titration with titanous sulphate.

IN certain experiments on iron metabolism, involving the iron-containing protein of egg-yolk, lecitho-vitellin, we planned to make a large number of iron estimations. To conserve our small supply of protein, the preparation of which had involved considerable time and labour, we desired to cut down the size of the sample analysed to the smallest amount on which an accurate iron determination cou...

Potentiometric titration and conformational change in pepsinogen.

Potentiometric titrations of pepsinogen as functions of ionic strength and temperature were studied. It was found that the ionic strength has a minor effect on the titration behavior of the protein. The maximum values of the buffering capacity in the pH range of 6.0 to 9.0 were found at pH values corresponding to those at which a conformational change of the protein occurs as determined by opti...

Determination of polyhexamethylene biguanide hydrochloride using photometric colloidal titration with crystal violet as a color indicator.

A solution of polyhexamethylene biguanide hydrochloride (PHMB-HCl) was titrated with a standard solution of potassium poly(vinyl sulfate) (PVSK) using crystal violet (CV) as an photometric indicator cation. The end point was detected by a sharp absorbance change due to an abrupt decrease in the concentration of CV. A linear relationship between the concentration of PHMB-HCl and the end-point vo...

Feed Additive Name(s): Ferrous chelate of glycine hydrate Ferrous/iron chelate of amino acids hydrate Ferrous fumarate Ferric oxide Ferric chloride hexahydrate Ferrous sulfate monohydrate