Biomedical subjects
M Eisman
Publications and source records attributed to M Eisman.
Clinically significant anti-LWab by monocyte monolayer assay.
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Determination of papaverine and cocaine by use of a precipitation system coupled on-line to an atomic absorption spectrometer.
A continuous-precipitation flame-atomization atomic absorption spectrometric method for the determination of papaverine and cocaine hydrochlorides is proposed. The method is based on the precipitation of reineckates by injection of Reinecke's salt into a carrier containing the alkaloids and their subsequent retention on a stainless steel filter. In this way, papaverine and cocaine hydrochlorides can be determine over the ranges 5-85 and 50-850 micrograms ml-1 with a relative standard deviation of 1.3 and 3.2%, respectively, and a sampling frequency of 150 h-1. The proposed method is more sensitive and selective for papaverine than it is for cocaine and can be applied to the determination of papaverine HCl in pharmaceutical preparations.
Automatic determination of amylocaine and bromhexine by atomic absorption spectrometry.
An automatic method for the determination of amylocaine and bromhexine hydrochloride by atomic absorption spectrometry (AAS) is proposed. The drugs were determined indirectly by formation of reineckates, extraction into 1,2-dichloroethane and measurement of chromium in the organic phase. The chemical conditions and experimental variables influencing the performance of the flow system of the liquid-liquid extractor were established. The proposed method allows the determination of amylocaine and bromhexine at concentrations between 3 and 120 micrograms ml-1 with a relative standard deviation of 1 and 3%, respectively, even in the presence of other synthetic drugs.