12 research outputs found
Benign focal epilepsy of childhood with centrotemporal spikes (BECTS): clinical characteristics of seizures according to age at first seizure
Consenso expandido do BCTRIMS para o tratamento da esclerose mĂșltipla: I. As evidĂȘncias para o uso de imunossupressores, plasmafĂ©rese e transplante autĂłlogo de cĂ©lulas tronco
Sobre un caso de actinomicosis (atĂpica)y tuberculosis concomitantes : Tesis presentada para optar al tĂtulo de doctor en medicina
A la cabeza de portada: Universidad Nacional de Buenos Aires. Facultad de Ciencias MĂ©dicas. - Incluye nĂłmina de CatedrĂĄticos y Asignaturas. Tesis con dedicatoria
Quantification of phenolphthalein in cosmetic products
A simple method for the quantification of phenolphthalein in cosmetic
formulations is described. The sample, acidified with acetic acid,
is extracted with methanol and analysed by reversed-phase HPLC on a
column packed with 5 m SelectB RP-8. The initial mobile phase is
acetonitrile-aqueous 0.1 M acetic acid (10:90), then a linear gradient
up to 90% acetonitrile is applied in 30Â min. The limit of determination
is 1 ng injected when detection is performed at 230Â nm