| Determination of delta9-tetrahydrocannabinol in indoor air as an indicator of marijuana cigarette smoking using adsorbent sampling and in-injector thermal desorption gas chromatography-mass spectrometry. | |
| | |
MedLine Citation:
|
PMID: 17693313 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The marijuana leaves are usually mixed with tobaccos and smoked at amusement places in Taiwan. Recently, for investigation-legal purposes, the police asked if we can identify the marijuana smoke in a KTV stateroom (a private room at the entertainment spot for singing, smoking, alcohol drinking, etc.) without marijuana residues. A personal air-sampler pump fitted with the GC liner-tube packed with Tenax-TA adsorbent was used for air sampling. The GC-adsorbent tube was placed in the GC injector port and desorbed directly, followed by GC-MS analysis for the determination of delta9-tetrahydrocannabinol (delta9-THC) in indoor air. The average desorption efficiency and limit of detection for delta9-THC were 89% and 0.1 microg m(-3), respectively, approximately needing 1.09 mg of marijuana leaves smoked in an unventilated closed room (3.0 m x 2.4 m x 2.7 m) to reach this level. The mean delta9-THC contained in the 15 marijuana plants seized from diverse locations was measured to be 0.32%. The delta9-THC in room air can be successfully identified from mock marijuana cigarettes, mixtures of marijuana and tobacco, and an actual case. The characteristic delta9-THC peak in chromatogram can serve as the indicator of marijuana. Positive result suggests marijuana smoking at the specific scene in the recent past, facilitating the formulation of further investigation. |
| | |
Authors:
|
Su-Lien Chou; Yong-Chien Ling; Mo-Hsiung Yang; Chung-Yen Pai |
Related Documents
:
|
17494903 - Medical marijuana and the developing role of the pharmacist. 19492213 - Medical marijuana: the conflict between scientific evidence and political ideology. par... 9290183 - Treatment of impaction colics. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't; Validation Studies Date: 2007-07-24 |
Journal Detail:
|
Title: Analytica chimica acta Volume: 598 ISSN: 1873-4324 ISO Abbreviation: Anal. Chim. Acta Publication Date: 2007 Aug |
Date Detail:
|
Created Date: 2007-08-13 Completed Date: 2007-09-28 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0370534 Medline TA: Anal Chim Acta Country: Netherlands |
Other Details:
|
Languages: eng Pagination: 103-9 Citation Subset: IM |
Affiliation:
|
Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adsorption Air Pollution, Indoor / analysis* Calibration Chromatography, Gas Forensic Sciences / methods Marijuana Smoking* / legislation & jurisprudence Mass Spectrometry Taiwan Tetrahydrocannabinol / analysis* |
| Chemical | |
Reg. No./Substance:
|
1972-08-3/Tetrahydrocannabinol |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Development of a new sample pre-treatment procedure based on pressurized liquid extraction for the d...
Next Document: Characterization and identification of isomeric flavonoid O-diglycosides from genus Citrus in negati...