- Kinetic determination of tellurium based on its inhibitory effect on the palladium(II)-catalysed reaction between pyronine G and hypophosphite ion.
Kinetic determination of tellurium based on its inhibitory effect on the palladium(II)-catalysed reaction between pyronine G and hypophosphite ion.
The Analyst (1990-09-01)
C Sánchez-Pedreño, M I Albero, M Soledad García, A Saez
PMID2091496
RESUMEN
A kinetic method for the determination of Te based on its inhibitory effect on the PdII-catalysed reaction between pyronine G and H2PO2- is described. The influence of experimental variables on the rate of the process and the potential interfering effect of a large number of ions has been studied. Under the selected experimental conditions: 6 x 10(-5) M pyronine G; 0.6 M H2PO2-; pH 2.6, adjusted with Britton-Robinson buffer; 0.80 microgram ml-1 of PdII; and a temperature of 22 +/- 0.2 degrees C, Te was determined in the concentration range 0.08-0.85 microgram ml-1. The method was applied to the determination of Te in waters and lead concentrates.
MATERIALES
Referencia del producto
Marca
Descripción del producto
Número de referencia del producto (SKU)
Tamaño de envase
Disponibilidad
Precio
Cantidad
Sigma-Aldrich
Sodium hypophosphite, puriss., meets analytical specification of BPC63, anhydrous, 98-101%
Número de referencia del producto (SKU)
Tamaño de envase
Disponibilidad
Precio
Cantidad