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opium
The effects of 12 elements on the formation and accumulation of isoquinolines were studied in opium poppy seedlings (Papaver somniferum L.).
      
Emotional evaluation of short musical fragments was compared for healthy people, patients with endogenous or neurotic depression, and opium addicts with affective disorders.
      
Gas-Chromatographische Identifizierung und quantitative Bestimmung von Morphin, Codein, Thebain, Papaverin und Narcotin in Opium
      
Using gas chromatography, the alkaloids morphine, codeine, thebaine, papaverine and narcotine contained in opium extract have been identified and quanti-fied as free bases in one step without derivation.
      
For this purpose, accurately weighed amounts of opium extract and internal standard are prepared according to the method described, and an aliquot part of the resultant solution is subjected to gas chromatography under defined conditions.
      
Chromatographic behaviour of opium and strychnos alkaloids, along with atropine and ephedrine, on paper impregnated with zirconium antimonate using aqueous eluents is reported.
      
Rapid analysis of opium alkaloids by ion-pair high performance liquid chromatography
      
A new procedure for the rapid analysis of four major opium alkaloids is described using ion-pair, reversedphase high performance liquid chromatography and recently developed radial compression column technology.
      
A rapid procedure for the evaluation of codeine phosphate drug substance derived from poppy straw or opium concentrate is described.
      
Eight opium alkaloids, including the four major alkaloids, are separated from each other.
      
Determination of the five major opium alkaloids by reversed-phase high-performance liquid chromatography on a base-deactivated s
      
The method is applicable to opium and to poppy straw.
      
Capillary electrophoresis time-of-flight mass spectrometry of an opium powder
      
In the present paper we investigated ESI-TOFMS for the analysis of an opium powder.
      
CEMS analysis of the opium was performed in a citrate buffer, using aqueous or mixed aqueous/organic eluents.
      
HPLC separation of opium alkaloids on porous and non-porous stationary phases
      
A new reversed-phase (RP) HPLC method has been developed and validated for the separation of the main opium alkaloids morphine, codeine, thebaine, papaverine and noscapine on a non-porous (micropellicular) stationary phase.
      
Thus, the analysis time for the opium alkaloids was approximately one tenth of that on porous stationary phases.
      
Different opium samples were investigated using non-porous and porous packings.
      
The Opium Trade and Opium Policies in India, China, Britain, and the United States: Historical Comparisons and Theoretical Inter
      
 

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