Polymerization of β-phenyl glutaconic diethyl ester (GE) with various diamines (DA) at 1:2 molar ratios in 1,4dioxane solvent was carried out at reflux temperature. The resultant amino terminated unsaturated oligomers (ATUP) were characterized by elemental analysis, number of terminal amino groups, IR spectral studies, number average molecular weight estimated by non-aqueous conductometric titr...

Abstract The technology of digital interface compatible electronic transducer is studied. measuring and protective equipment explored to make a new application current voltage signals from the so that differential signal directly used as protection input. principle based on input put forward. And theoretical analysis simulation shows principles proposed are feasible.

We describe a procedure for the determination of hydrochloric acid concentration in gastric juice by means of a conductometric titration of the 50-fold diluted sample with an aqueous ammonia solution. The conductometric method of endpoint indication leads to a definite location of the equivalence point in the titration of hydrochloric acid. The proposed method is simple and accurate and shows a...

(2) signal preprocessing path; (3) signal post-processing path. In this paper, a new transducer to system interface is developed to suppress the noise from the transducer and its interface to system. Several features unique to the transducer to system interface that could help suppress the noise from the transducer and its interface to the system (1) differential input is adopted in the front e...

Very often, high-temperature operated gas sensors are cross-sensitive to oxygen and/or they cannot be operated in oxygen-deficient (rich) atmospheres. For instance, some metal oxides like Ga(2)O(3) or doped SrTiO(3) are excellent materials for conductometric hydrocarbon detection in the rough atmosphere of automotive exhausts, but have to be operated preferably at a constant oxygen concentratio...

Ti/PbO2/Sb2O3 electrode was used as indicator electrode in potentiometric and conductometric titration in aqueous solution at 298 K. The E-pH curve is linear with a slope of 0.0505 V/dec at 298 K which is close to the theoretical value 2.303RT/F (0.059 V at 298 K). The standard potential of this electrode, E, is computed with respect to the SCE as reference electrode. The recovery percentages f...

The reaction between NaAsO2 and oxalic acid was studied by pH-metric and conductometric measurements, applying the methods of continual variation and pH-metric and conductometric titration. It was found that oxalic acid forms a complex anion of the type [AsOC2O4]. The relative stability constant of the complex at ionic strengths, I, of 0.10 (log Kr = 4.70), 0.20 (log Kr = = 4.51), 0.50 (log Kr ...

Quantitative determination of Brønsted acid sites in acidic mordenite samples with varying proton concentrations has been studied using aqueous conductometric titration method. Conductometric titration of the ammonium form of mordenite with sodium hydroxide is feasible and the results indicate potential number of Brønsted acid sites. However, Brønsted acid sites concentration in acidic mordenit...