Identification of Opium by Chemical Ionization Mass Spectrometry
| Autor: | Shmuel Zitrin, Jehuda Yinon |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
Chemical ionization
Papaverine Chromatography Thebaine Chemistry Electrospray ionization Biochemistry (medical) Clinical Biochemistry Opium Atmospheric-pressure chemical ionization Mass spectrometry Biochemistry Analytical Chemistry Electrochemistry medicine Direct electron ionization liquid chromatography–mass spectrometry interface Spectroscopy medicine.drug |
| Zdroj: | Analytical Letters. 10:235-241 |
| ISSN: | 1532-236X 0003-2719 |
| DOI: | 10.1080/00032717708059208 |
| Popis: | The five major alkaloids of opium - morphine, narcotine, codeine, thebaine and papaverine - have been identified by the chemical ionization (CI) mass spectrum of opium, without any prior separation. CI reagents used were isobutane, at a pressure of 0.2–0.5 Torr and water at a pressure of 0.05 – 0.07 Torr. Source temperatures were in the range of 155–200°C and probe temperatures in the range of 90–160°C. The base peak in the CI spectrum of opium is at m/e 220, resulting from an unusual cleavage of the MH ion of narcotine. |
| Databáze: | OpenAIRE |
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