Determination of triacetone triperoxide using ultraviolet femtosecond multiphoton ionization time-of-flight mass spectrometry

Ryota Ezoe, Tomoko Imasaka, Totaro Imasaka

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Triacetone triperoxide (TATP), an explosive compound, was measured using gas chromatography combined with multiphoton ionization time-of-flight mass spectrometry (GC/MPI-TOFMS). By decreasing the pulse width of a femtosecond laser from 80 to 35fs, a molecular ion was drastically enhanced and was measured as one of the major ions in the mass spectrum. The detection limits obtained using the molecular (M+) and fragment (C2H3O+) ions were similar or slightly superior to those obtained using conventional mass spectrometry based on electron and chemical ionization. In order to improve the reliability, an isotope of TATP, i.e., TATP-d18, was synthesized and used as an internal standard in the trace analysis of TATP in a sample of human blood. TATP could be identified in a two-dimensional display, even though numerous interfering compounds were present in the sample. Acetone, which is frequently used as a solvent in sampling TATP, produced a chemical species with a retention time nearly identical to that of TATP and provided a C2H3O+ fragment ion that was employed for measuring a chromatogram of TATP in conventional MS. This compound, the structure of which was assigned as phorone, was clearly differentiated from TATP based on a molecular ion observable in MPI-TOFMS.

Original languageEnglish
Pages (from-to)508-513
Number of pages6
JournalAnalytica Chimica Acta
Volume853
Issue number1
DOIs
Publication statusPublished - Jan 1 2015

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Ionization
Mass spectrometry
Mass Spectrometry
ionization
mass spectrometry
ion
Ions
acetone
explosive
gas chromatography
laser
blood
Trace analysis
triacetone triperoxide
isotope
electron
Acetone
Ultrashort pulses
sampling
Isotopes

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

Cite this

Determination of triacetone triperoxide using ultraviolet femtosecond multiphoton ionization time-of-flight mass spectrometry. / Ezoe, Ryota; Imasaka, Tomoko; Imasaka, Totaro.

In: Analytica Chimica Acta, Vol. 853, No. 1, 01.01.2015, p. 508-513.

Research output: Contribution to journalArticle

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