Buscar
Mostrando ítems 1-10 de 64
A multicommuted flow-system for spectrophotometric determination of tannin exploiting the Cu(I)/BCA complex formation
(ELSEVIER SCIENCE BV, 2008)
A flow system exploiting the multicommutation approach is proposed for spectrophotometric determination of tannin in beverages. The procedure is based on the reduction of Cu(II) in the presence of 4,4`-dicarboxy-2,2`-biquinoline, ...
Liquid-liquid microextraction without phase separation in a multicommuted flow system for diltiazem determination in pharmaceuticals
(ELSEVIER SCIENCE BV, 2011)
Liquid-liquid microextraction without phase segmentation was implemented in a multicommuted flow system for determination of the anti-hypertensive diltiazem. The procedure was based on ion pair formation between the drug ...
A multicommuted flow-based system for hydrogen peroxide determination by chemiluminescence detection using a photodiode
(2007-01-01)
A simple, rapid, and automated assay for hydrogen peroxide in pharmaceutical samples was developed by combining the multicommutation system with a chemiluminescence (CL) detector. The detection was performed using a spiral ...
A multicommuted flow-based system for hydrogen peroxide determination by chemiluminescence detection using a photodiode
(2007-01-01)
A simple, rapid, and automated assay for hydrogen peroxide in pharmaceutical samples was developed by combining the multicommutation system with a chemiluminescence (CL) detector. The detection was performed using a spiral ...
A multicommuted flow system with solenoid micro-pumps for paraquat determination in natural waters
(ELSEVIER SCIENCE BV, 2008)
A flow system designed with solenoid micro-pumps is proposed for the determination of paraquat in natural waters. The procedure involves the reaction of paraquat with dehydroascorbic acid followed by spectrophotometric ...
Sequential spectrofluorimetric determination of free and total glycerol in biodiesel in a multicommuted flow system
(SPRINGER HEIDELBERG, 2011)
A new procedure for spectrofluorimetric determination of free and total glycerol in biodiesel samples is presented. It is based on the oxidation of glycerol by periodate, forming formaldehyde, which reacts with acetylacetone, ...
A versatile set up for implementing different flow analysis approaches - Spectrophotometric determination of nickel in steel alloys
(Elsevier Science BvAmsterdamHolanda, 2006)
A sensitive procedure to determine o-cresol using multicommutation and a portable photometer with a long optical pathway cell
(Facultad Experimental de Ciencias de la Universidad del Zulia, 2011)