Solid-phase extraction of nerve agent degradation products using poly [(2-(methacryloyloxy)ethyl)trimethylammonium chloride] thin films

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In this study, a simple solid-phase extraction (SPE) technique was developed to extract organophosphonic acids as degradation products of nerve agents from aqueous samples for identification by instrumental analyses such as FT-IR, TOF-SIMs and GC-MS. To selectively extract the organophosphonic acids, we synthesized an anion exchange polymer film on a gold plate using surface-initiated controlled radical polymerization with 2- [(methacryloyloxy)ethyfltrimethylammonium chloride. Extraction of the organophosphonic acids onto the plates was successfully confirmed by polarized angle fourier transformation-infra red (FT-IR) spectroscopy, X-ray photoelectron spectroscopy, and time-of-flight secondary ion mass spectrometry analyses. The limit of detection of the developed SPE method satisfied the detection limit of Chemical Warfare Agents verification criteria by FT-IR analysis. After optimization, the detection limit values were found to be between 0.1 and 0.4 mu g mL(-1), and the recovery ranged from 50% to 110% in aqueous solution containing various interference. In addition, the SPE process was successfully applied to the detection of pinacolyl methylphosphonic acid, the degradation product of soman, in the 35th Organization for Prohibition of Chemical Weapons proficiency test sample.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2019-05
Language
English
Article Type
Article
Citation

TALANTA, v.197, pp.500 - 508

ISSN
0039-9140
DOI
10.1016/j.talanta.2019.01.048
URI
http://hdl.handle.net/10203/253924
Appears in Collection
CH-Journal Papers(저널논문)
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