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Keywords:

  • Chemical warfare agent;
  • RTIL;
  • Electrochemical sensor;
  • Nitrogen mustard-2;
  • DPSCA;
  • Ionic liquids;
  • Sensors

Abstract

Greener electrochemical detection method developed for chemical warfare agent (CWA) nitrogen mustard-2 (NM-2) using room temperature ionic liquid (RTIL). The diffusion coefficient calculated for NM-2 in acetonitrile and RTIL was 1.57×10−4 cm2/s and 1.82×10−10 cm2/s, respectively. NM-2 addition to RTIL enhanced RTIL conductivity. Moreover, heterogeneous rate constant (0.192 s−1), transfer coefficient (0.231) and the number of electron involved (1.0) were deduced for NM-2 in RTIL. The calibration plot showed linearity between 2.94×10−5 and 1.17×10−3 M with detection limit 1.47 ×10−5 M (S/N=3). The large number of available RTIL can be used for greener detection of toxic CWAs.