Detail publikace

Rapid and selective screening of organic peroxide explosives using acid-hydrolysis induced chemiluminescence

Mahbub, P. Hasan, CK. Rudd, D. Voelcker, NH. Orbell, J. Cole, I. Macka, M.

Originální název

Rapid and selective screening of organic peroxide explosives using acid-hydrolysis induced chemiluminescence

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Organic peroxide explosives (OPEs) are unstable, non-military, contemporary security threats often found in improvised explosive devices. Chemiluminescence (CL) can be used to detect OPEs, via radical formation con-sisting of peroxide moieties (-O-O-) under acidic conditions. However, selectivity for specific OPEs is hampered by the ubiquitous background of H2O2. Herein, we report the differentiation of hexamethylene triperoxide diamine (HMTD), triacetone triperoxide (TATP), and methyl ethyl ketone peroxide (MEKP) by specific flow injection analysis-CL (FIA-CL) signal profiles, after H2SO4 treatment. The radical degradation pathway of each structure, and its corresponding FIA-CL profile, was explored using mass spectrometry to reveal the rapid loss of -O-O-from TATP and HMTD structures, while MEKP formed CL signal-sustaining oligomers, as opposed to the immediate attenuation of H2O2. The CL response for OPEs in an aqueous media, measured via the described FIA-CL method, enabled ultra-trace limits of detection down to 0.40 mu M for MEKP, 0.43 mu M for HMTD, and 0.40 mu M for TATP (combined linear range 1-83 mu M with 95% confidence limit, n = 12). Expanded uncertainties of measurement (UM) of MEKP = +/- 0.98, HMTD = +/- 1.03, and TATP = +/- 1.1 (UM included probabilities of false positive and false negative as well as standard deviations of % recoveries and limit of detections of OPEs). Direct aqueous sample introduction via FIA-CL thus offers the prospect of rapid and selective screening of OPEs in security-heightened settings (e.g., airports), averting false positives from more ubiquitous H2O2.

Klíčová slova

Acid hydrolysis; Direct flow injection analysis; chemiluminescence; Hydrogen peroxide; Organic peroxide explosives; Rapid screening; Selectivity

Autoři

Mahbub, P.; Hasan, CK.; Rudd, D.; Voelcker, NH.; Orbell, J.; Cole, I.; Macka, M.

Vydáno

15. 5. 2023

Nakladatel

ELSEVIER

Místo

AMSTERDAM

ISSN

1873-4324

Periodikum

Analytica Chimica Acta

Ročník

1255

Číslo

341156

Stát

Nizozemsko

Strany počet

9

URL

https://www.sciencedirect.com/science/article/pii/S000326702300377X?via%3Dihub

BibTex

@article{BUT184068,
  author="Mahbub, P. and Hasan, CK. and Rudd, D. and Voelcker, NH. and Orbell, J. and Cole, I. and Macka, M.",
  title="Rapid and selective screening of organic peroxide explosives using acid-hydrolysis induced chemiluminescence",
  journal="Analytica Chimica Acta",
  year="2023",
  volume="1255",
  number="341156",
  pages="9",
  doi="10.1016/j.aca.2023.341156",
  issn="1873-4324",
  url="https://www.sciencedirect.com/science/article/pii/S000326702300377X?via%3Dihub"
}