Ultrasensitive detection of nitrogen oxides over a nanoporous membrane

Anal Chem. 2010 Dec 1;82(23):9938-40. doi: 10.1021/ac101908g. Epub 2010 Nov 5.

Abstract

A nitrogen oxide (NO(x); x = 1, 2) optical sensor with an extremely low detection limit in the range of fractions of ppbV (0.3 ppbV for 20 s sample injection) is presented. Phenylenediamine derivatives are utilized as molecular probes in the solid state on a nanoporous membrane to produce a miniaturized and low cost sensing platform for use as a wearable personal monitor.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Aluminum Oxide / chemistry
  • Molecular Probes / chemistry
  • Nanoparticles / chemistry*
  • Nitrogen Oxides / analysis*
  • Phenylenediamines / chemistry
  • Porosity
  • Spectrophotometry, Ultraviolet / methods*

Substances

  • Molecular Probes
  • Nitrogen Oxides
  • Phenylenediamines
  • Aluminum Oxide