Analysis for explosives in contaminated soil using the electrochemical method

폭발물 오염토양에서 전기화학법을 이용한 RDX 흔적량의 분석

  • Ly, Suw Young (Biosensor Research Institute, Seoul National University of Technology)
  • 이수영 (서울산업대학교 바이오센서연구소)
  • Received : 2008.01.25
  • Accepted : 2008.04.03
  • Published : 2008.04.25

Abstract

Cyclic voltammetry (CV) and square wave stripping voltammetry (SW) analysis of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) using the double-stranded ds calf thymus (DNA) mixed in carbon nanotube paste electrode (PE) were provided. The optimum analytical conditions were determined and the peak potential was 0.2 V vs. Ag/AgCl. The linear working ranges of CV (50-75 ug/L) and SW (5-80 ng/L) were obtained. The precisions of RSD in the 10 ug/L was 0.086% (n=15) and the detection limit was 0.65 ng/L ($2.92{\times}10^{-12}M$) (S/N=3) with 300 s adsorption time at the optimum condition. The method was used to determine the presence of explosive chemicals in contaminated soil samples.

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