Zobrazeno 1 - 10
of 20
pro vyhledávání: '"I. Smetena"'
Publikováno v:
Analytical and Bioanalytical Chemistry. 373:839-843
An improved method, gas chromatography (GC) with nitrogen-phosphorus detection (NPD), has been used for determination of alkaloids in green and cured tobacco. Tobacco alkaloids of interest included nicotine, nornicotine, myosmine, anabasine, and anat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b15c690ef932dbfc917ebf8f1fa54e8f
https://doi.org/10.1007/s00216-002-1380-1
https://doi.org/10.1007/s00216-002-1380-1
Autor:
I. Smetena, S. S. Yang
Publikováno v:
Chromatographia. 47:443-448
The sampling approaches using solid phase microextraction (SPME) were evaluated for the analysis of tobacco alkaloids. Because of their low volatility and ionic nature, sampling alkaloids from the headspace of dry or wet tobacco samples often require
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46846f311326c253290e6a284d3a8d26
https://doi.org/10.1007/bf02466477
https://doi.org/10.1007/bf02466477
Publikováno v:
Journal of Chromatography A. 754:3-16
This paper highlights recent advances in the determination of methylcarbamate residues in water, soil and plant tissues. Chromatographic analyses (e.g., HPLC, GC, supercritical fluid chromatography and TLC) with various sample pretreatment procedures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ebadb2b890273b4fefa4e814045b2ee
https://doi.org/10.1016/s0021-9673(96)00203-8
https://doi.org/10.1016/s0021-9673(96)00203-8
Publikováno v:
Journal of Chromatography A. 746:131-136
Micellar electrokinetic capillary chromatography was evaluated for simultaneous determination of several tobacco alkaloids with similar molecular structure. Satisfactory separation of nicotine, nornicotine, myosmine, anatabine and anabasine extracted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::852058a07a1b00edf236fa67aea9e8a7
https://doi.org/10.1016/0021-9673(96)00314-7
https://doi.org/10.1016/0021-9673(96)00314-7
Autor:
I. Smetena, S. S. Yang
Publikováno v:
Chromatographia. 40:375-378
Difficulties encountered in the gas or liquid chromatographic analysis of nicotine and other alkaloids in tobacco are largely due to the ionic character of these compounds. The potential of using capillary electrophoresis (CE) as an alternative analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5560f85acb069ee3699cbb30d0ad5382
https://doi.org/10.1007/bf02269897
https://doi.org/10.1007/bf02269897
Autor:
S. S. Yang, I. Smetena
Publikováno v:
Chromatographia. 37:593-598
An HPLC method for the determination of primary amino acids in tobacco, based on precolumn derivatization with the fluorogenic reagent naphthalene-2,3-dicarboxaldehyde, is described. Sample preparation consists of a single step of extraction with wat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fddd57c4c3095816394726140464c158
https://doi.org/10.1007/bf02274107
https://doi.org/10.1007/bf02274107
Publikováno v:
Journal of chromatography. A. 942(1-2)
Solid-phase microextraction (SPME) was evaluated as a tool for headspace sampling of tobacco samples. Several experimental parameters (e.g. sampling temperature, pH, moisture, and the type of SPME fibers) were optimized to improve sampling efficiency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5dc575b689ca3c39e23d59b41deef56
https://pubmed.ncbi.nlm.nih.gov/11822395
https://pubmed.ncbi.nlm.nih.gov/11822395
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