Quantification of Triethanolamine (cas 102-71-6) through measurement of catalytic current in alkaline iron-d
-
Add time:08/05/2019 Source:sciencedirect.com
Triethanolamine (cas 102-71-6) is widely used in cosmetics and detergent formulations. Through its negative redox potential of −1050 mV (vs. Ag/AgCl, 3 M KCl) the Fe(II/III)-triethanolamine complex also is of interest as electrolyte in redox-flow batteries. Thus an analytical method to determine triethanolamine concentrations in complex formulations is of distinct technical value. In cyclic voltammetry a catalytic current is observed when Fe(III)-triethanolamine complexes are reduced in presence of an excess Fe(III)-d-gluconate. The catalytical regeneration of the Fe(III)-triethanolamine complex occurs at its characteristic cathodic peak potential (Ep)c of −1050 mV and thus permits analytical determination of low triethanolamine concentrations. In CV experiments a linear relationship between triethanolamine concentration and (Ep)c at −1050 mV was observed for triethanolamine concentrations between 0.05 and 1 mM in an electrolyte containing 15 mM Fe(III)-d-gluconate and 0.4 M NaOH. As an example, electrolytes from an all‑iron redox-flow cell were analysed for possible transfer of triethanolamine through the ion exchange membrane. The standard addition method was used to minimise matrix effects on the determination of the cathodic peak currents (Ip)c. The new method permits a direct analysis of triethanolamine concentration without extensive sample preparation or highly specialised equipment. This makes the technique useful as a routine method for triethanolamine analysis in a wide range of technical applications.
We also recommend Trading Suppliers and Manufacturers of Triethanolamine (cas 102-71-6). Pls Click Website Link as below: cas 102-71-6 suppliers
Prev:Highly soluble Fe(III)-Triethanolamine (cas 102-71-6) complex relevant for redox flow batteries
Next:Enhanced adsorption of Ag+ on Triethanolamine (cas 102-71-6) modified titanate nanotubes) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- Thermogravimetric measurement of the equilibrium vapour pressure: Application to water and Triethanolamine (cas 102-71-6)08/11/2019
- Effect of Triethanolamine (cas 102-71-6) on cement hydration toward initial setting time08/10/2019
- Dispersion of Triethanolamine (cas 102-71-6)-functionalized graphene oxide (TEA-GO) in pore solution and its influence on hydration, mechanical behavior of cement composite08/09/2019
- Copper–zinc alloy electrodeposition mediated by Triethanolamine (cas 102-71-6) as a complexing additive and chemical dealloying08/08/2019
- Effect of Triethanolamine (cas 102-71-6) hydrochloride on the performance of cement paste08/07/2019
- Enhanced adsorption of Ag+ on Triethanolamine (cas 102-71-6) modified titanate nanotubes08/06/2019
- Highly soluble Fe(III)-Triethanolamine (cas 102-71-6) complex relevant for redox flow batteries08/04/2019
- Photocatalytic cofactor regeneration involving Triethanolamine (cas 102-71-6) revisited: The critical role of glycolaldehyde08/03/2019
-
Health and Chemical more >