Zobrazeno 1 - 10
of 34
pro vyhledávání: '"G.Ramis Ramos"'
Publikováno v:
Analytica Chimica Acta. 292:113-120
The thermal lens spectrometric (TLS) signal increases when Ag+ is added to a halide solution or vice versa. The change in the TLS signal is due to the disproportionation and darkening of the surface of the silver halide particles produced by the Ar+
Publikováno v:
Journal of Computational Chemistry. 13:810-820
A systematic derivation procedure that greatly facilitates the application of the Taylor method to the integration of kinetic models is developed. In addition, an algorithm that gives the integration step as a function of the required level of accura
Publikováno v:
Analytical Letters. 25:1425-1445
Experimental conditions for the spectrophotometric and thermal lens spectrometry (TLS) detection of catecholamines after oxidation to aminochromes with hexacyanoferrate (III) are optimized. At the low concentrations used in TLS, and in a 0.07 M citra
Publikováno v:
Analytica Chimica Acta. 259:203-210
A rapid method for the determination of banned drugs in sport (including stimulants, anabolic steroids and diuretics) based on micellar liquid chromatography is proposed. The mobile phase is an aqueous solution of a surfactant (sodium dodecyl sulphat
Publikováno v:
Analytica Chimica Acta. 257:217-221
When potassium hexacyanoferrate(III) solutions in a water—ethanol or water—acetone medium are irradiated with Ar + laser radiation, a precipitate is formed on the illuminated region of the cell back wall. The precipitate is probably due to iron(I
Publikováno v:
Scopus-Elsevier
A flow-injection gradient scanning technique for colour evaluation by means of tristimulus colorimetry is described. Equipment and data acquisition requirements are discussed. The program CHROMA.FIA data the treatment and comparative chromatic analys
Publikováno v:
Microchemical Journal. 44:222-227
The spectrophotometric and photothermal (TLS) procedures for cerium determination using 8-hydroxyquinoline (oxine), after extraction into chloroform, are compared. Photothermal measurements are made using a coaxial pump/probe thermal lens spectromete
Publikováno v:
Journal of Computational Chemistry. 12:283-291
The program OPKINE is presented for the study of reaction mechanisms and multicomponent analysis in dynamic conditions. This program is written in FORTRAN-77 for IBM 30/90 and VAX 8300 computers, and permits the simultaneous evaluation of both rate c
Publikováno v:
Analytica Chimica Acta. 242:143-146
In a sodium dodecyl sulphate (SDS) micellar solution, the rate of coupling of a diazonium ion with N-(1- naphthyl)ethylenediamine (NED) increases greatly, the protonation of the resulting azo dyes takes place at higher pH values and the dyes are more
Publikováno v:
Journal of Colloid and Interface Science. 141:44-49
The changes in the acid—base properties of an azo dye produced by the presence of surfactants, at surfactant concentrations below and above the CMC, are quantitatively described using a simple model and spectrophotometric and potentiometric measure