Microscale Solid-Phase Extraction System for Explosives

Abstract

A simple, semi-automated, microcolumn solid-phase extraction (SPE) system is optimized for the extraction, preconcentration and HPLC analysis of seven different explosives and explosive derivatives contaminating seawater, river water and well water samples. The microcolumns were constructed from 1/16 in. O.D. PTFE tubing (1 in. =2.54 cm) packed with 0.5-1.5 mg of SPE material, LiChrolut EN or Porapak R. The extraction system consisted of two syringe pumps and several solenoid valves. Optimal detection limits were realized when the sample water flow-rate was maximally increased within the limits of the pump, 5-10 ml/min (despite exceeding the breakthrough threshold of the SPE microcolumn), and when the eluate volume collected from the column was minimized, <5 mul (despite very low recovery percentages).

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 24, 2003
Accession Number
ADA428908

Entities

People

  • Greg E. Collins
  • Joseph Wang
  • Matthew K Smith

Organizations

  • Nova Research Company (United States)

Tags

Communities of Interest

  • Counter IED

DTIC Thesaurus Topics

  • Acetonitrile
  • Chemical Synthesis
  • Chemistry
  • Detection
  • Environmental Protection
  • Explosives
  • Flow Rate
  • Materials
  • Nitriles
  • Packing Materials
  • Potomac River
  • Rotary Valves
  • Solenoid Valves
  • Solenoids
  • Solid Phases
  • Tnt
  • Valves

Fields of Study

  • Environmental science

Readers

  • Analytical Chemistry
  • Internal Combustion Engine (ICE) Technology.
  • Mathematics or Statistics