ACOMS+ 및 학술지 리포지터리 설명회

  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
  • 2024년 07월 03일(수) 13:30
 

  • P-ISSN2233-4203
  • E-ISSN2093-8950
  • ESCI, SCOPUS, KCI

논문 상세

Home > 논문 상세
  • P-ISSN 2233-4203
  • E-ISSN 2093-8950

Studies of the Organic Molecules Dissociative Surface Ionization in the Mass-Spectrometric Surface Ionization Method

Mass Spectrometry Letters / Mass Spectrometry Letters, (P)2233-4203; (E)2093-8950
2024, v.15 no.1, pp.54-61
https://doi.org/10.5478/MSL.2024.15.1.54
Ilkhomjan Saydumarov (Tashkent State Transport University)
Dilshadbek Usmanov (Uzbekistan Academy of Sciences)
  • 다운로드 수
  • 조회수

Abstract

An improved voltage modulation method (VMM) was used to control the heat release and adsorption properties of the adsorbent. In this work, the voltage and flux modulation methods were considered under unified experimental conditions of dissociative surface ionization (SI) of polyatomic organic molecules, the criteria were found when under VMM conditions the current relaxation of SI carries information about the kinetic properties of thermal desorption of ionizable dissociation particles arriving on the surface of polyatomic molecules. Conditions were found under which the relaxation of the ionic current in the flux modulation method is determined by the kinetics of the heterogeneous dissociation reaction of the original polyatomic mol-ecules. The values of the thermal desorption rate constant K + and the activation energy E + obtained with VMM for desorption of (CH 3 ) 2 NCH + 2 ions with m/z 58 by adsorption of imipramine and amitriptyline molecules agree well with each other and with the results for the desorption of the same ions by adsorption of other molecules. This confirms one of the basic conditions for the equilibrium process SI – the a degree (β coefficient) of the same particles SI on the same emitter surface is the same and does not depend on the way these particles are formed on the emitter surface.

keywords
multi-atomic molecule, ionization, process, modulation, voltage, lifetime


투고일Submission Date
2024-02-06
수정일Revised Date
2024-03-05
게재확정일Accepted Date
2024-03-07
상단으로 이동

Mass Spectrometry Letters