The results of thermodesorption thermoionic (surface-ionization) spectrometry (TDTIS) investigations of synthetic cannnabinoid АВ-Chminaca (a derivative of indazole) and seized smoking mixtures on diverse matrixes have been presented. Thermoionic profiles have been obtained with thermoemitters from molybdenum oxide doped with iridium in air. Thermoionic and thermodesorption characteristics of molecules, limits of detection and matrix effect on TDTIS spectra have been defined. The high efficiency of ionization (up to 100 K/mol) and low limits of detection (from 0.1 pmol) have been determined without preliminary separation of samples and owing to high selectivity of the TDTIS method, which makes it possible its application in toxicological and forensic laboratories.
| Mualliflar | Iskhakova, S.S., Khasanov, U., Erova, T.Kh., Eshburieva, M.U., Jumaev, U.O. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashr sanasi | 2018-07-21 |
| Jild | 20 |
| Son | 4 |
| Betlar | 259-264 |
| Til | Ingliz |
| DOI | 10.52304/.v20i4.101 |
DOI: 10.52304/.v20i4.101 · Maqolaning asl sahifasi
In the present work the peculiarities of ion implantation and colliding particles mass ratio influence on the ranges, energy loss and profiles of distribution for 1−5 keV P+ ions channelling in Si(110) and SiC(110) at…
The application of synergetics as a modern transdisciplinary science in radiation physics is discussed. It is shown that the basic concepts of synergetics are very well applicable to the description of the number of…
The observational data of long-term continuous monitoring of the gravitationally lensed system В1422+237 are analyzed. A brief description of the photometric method for image processing is given, light curves are…
Surface-enhanced Raman scattering (SERS) technique is an important and powerful analytical tool, which has attracted much attention for environmental monitoring, chemical analysis and biomedical research. In this paper…
Results of comparative analysis of the formation processes of 7 Be nuclei and (α+3 He) system in channels with formation of alpha-particles in 16Op-collisions at 3.25 A GeV/s are presented. It is obtained that the two…
The volcano-type size dependence of the extraordinary catalytic activity of gold nanoparticles in CO oxidation is discussed on the basis of combination of the d-band model, the jellium model of metal clusters and the…
A simple analytical model of the density of states of two-dimensional electron gas has been proposed. Broadening the quasi-stationary states of electron in quantum dot of heterostructures is taken into account. It is…
Anisotropy of attenuation of acoustic waves in photorefractive BSO and BGO crystals has been studied in the frequency range of 0.4−1.6 GHz. The anisotropy parameters determined by the imaginary constants of BSO and BGO…
Using the method of CC-DLTS the properties of the Si-SiO2 transition layer and relaxation processes in the system Si–SiO2 .are investigated. A scheme of various electronic relaxation processes of the charge occurring in…
Significant oscillations of the spectral distribution of the idler pulses in the optical parametric amplification of chirped laser pulse have been observed experimentally. On the base of the obtained simple analytical…