Isolation and determination of morphine, codeine and heroin from viscera and body fluids by adsorption

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Abstract
Florisil (magnesium silicate) was used to adsorb alkaloids from trichlorbacetic acid filtrates of blood and tissue prepns., and from diluted urine samples. Elution was with methyl alcohol, refluxed 1 hr. Morphine was determined by the Oberst method using Folin-Ciocalteu phenol reagent; heroin by the formaldehyde-sulfuric acid reagent, and codeine by Fulton''s formaldehyde-ferric sulfate-sulfuric acid reagent. The method was adapted to 0.5-5.0 mg., amounts contained in 100-250 ml. of tissue extract.

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