Direct Injection of Seawater for the Analysis of Nitroaromatic Explosives and their Degradation Products by Micellar Electrokinetic Chromatography

Abstract

Practical considerations for the injection and separation of nitroaromatic explosives in seawater sample matrices are discussed. The use of high surfactant concentrations and long electrokinetic injections allows for improved detection limits. Sensitivity was enhanced by two mechanisms, improved stacking at the detector-side of the sample plug and desorption of analyte from the capillary wall by surfactant containing BGE from the inlet side of the sample plug. Calculated limits of detection (S/N = 3) for analytes prepared in pure seawater were 70-800 ppb with injection times varying from 5 to 100 s.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2010
Accession Number
ADA520744

Entities

People

  • Braden C. Giordano
  • Dean S. Burgi
  • Greg E. Collins

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Counter IED

DTIC Thesaurus Topics

  • Adsorption
  • Capillary Electrophoresis
  • Chemical Synthesis
  • Chemistry
  • Chromatography
  • Conductivity
  • Degradation
  • Detection
  • Detectors
  • Electrophoresis
  • Explosives
  • Materials
  • Military Research
  • Nitrotoluenes
  • Organic Materials
  • Regions
  • Tnt

Fields of Study

  • Chemistry
  • Environmental science

Readers

  • Environmental Engineering
  • Groundwater Contamination Remediation.
  • Organic Chemistry