Portable automatic BTX measurement system with microfluidic device using mesoporous silicate adsorbent with nano-sized pores

Yuko Ueno, Tsutomu Horiuchi, Osamu Niwa, Hao Shen Zhou, Takeo Yamada, Itaru Honma

Research output: Contribution to journalConference article

26 Citations (Scopus)

Abstract

We have developed a portable automatic measurement system for the detection and identification of aromatic volatile organic compound (VOC) gases, namely benzene, toluene, and xylenes (BTX), which are air pollutants, by assembling two microfluidic devices, a concentration cell and a detection cell, and peripheral devices. We combined the processes of gas concentration and thermal desorption performed by the concentration cell, with the process of spectroscopic detection performed by the detection cell. We achieved a 50ppb detection limit for toluene gas as an example of BTX detection in a sampling time of 30min. We also found that we could obtain better BTX separation by using a highly ordered mesoporous silicate as a gas adsorbent due to a function of its nano-sized pores. As a result, we successfully measured ppm level concentrations of BTX in a mixture gas separately with this device.

Original languageEnglish
Pages (from-to)282-286
Number of pages5
JournalSensors and Actuators, B: Chemical
Volume95
Issue number1-3
DOIs
Publication statusPublished - 2003 Oct 15
Externally publishedYes
EventSelected Papers from Eurosensors XVI - Prague, Czech Republic
Duration: 2002 Sep 152002 Sep 18

Keywords

  • Automatic measurement
  • BTX gases
  • Mesoporous silicate
  • Microfluidic device
  • Portable system

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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