Pyrocatechol Violet
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Solid phase extraction of iron and lead in environmental matrices on amberlite xad-1180/pv
A solid phase extraction procedure using Amberlite XAD-1180/Pyrocatechol violet (PV) chelating resin for the determination of iron and lead ions in various environmental samples was established. The procedure is based on the sorption of lead(II) and iron(III) ions onto the resin at pH 9, followed by elution with 1 mol/L HNO3 and determination by flame atomic
Química Nova. Publicado em: 2006-04
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2. SIMULTANEOUS DETERMINATION OF Al(III) AND Fe(III) IN POST-DIALYSIS FLUIDS BY SPECTROPHOTOMETRY AND MULTIVARIATE CALIBRATION METHODS. / DETERMINAÇÃO SIMULTÂNEA DE Al(III) E Fe(III) EM FLUIDOS PÓS-HEMODIÁLISE EMPREGANDO ESPECTROFOTOMETRIA E MÉTODOS DE CALIBRAÇÃO MULTIVARIADA.
This work aimed to explore the association of molecular absorption spectrometry with multivariate calibration techniques to the simultaneous determination of Al(III) and Fe(III) in post-dialysis fluids, from the complexes built between the analytes and the chromogenic reagent Pyrocatechol Violet in hexamethylenetetramine buffered medium (pH 6.1). The Partial
Publicado em: 2005
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3. Isolation and characterization of collagen messenger RNA*.
Chick embryo collagen-synthesizing polysomes were isolated by differential centrifugation. RNA extracted from these particles was chromatographed in oligo(dT)-cellulose solumns and the mRNA thus obtained characterized as collagen mRNA by its electrophoetical mobility in acrylamide gels (equivalent to 1.05 x 10-6 daltons) and its effect upon a cell-free syst