Detection of Sarin with a Fluorinated Polymer-coated Quartz Crystal Microbalance Sensor

  • B Zuo
  • W Li
  • T Zhang
  • H Zhang
  • G Liu
Keywords: QCM sensor, fluorinated polymer.


A quartz crystal microbalance (QCM) modified with a thin layer of fluorinated polymer was utilized to  determine sarin. Determination was based on the frequency shifts due to the adsorption and desorption of the compound at the surface of a modified quartz crystal electrode. Fluorosiloxane was synthesized and deposited onto the surface of the sensor. The frequency shifts were linearly dependent on the concentration of sarin within the concentration range of 0.42 ppm to 3.85 ppm. Good selectivity and sensitivity for sarin were obtained with the sensor. The detection limit was 0.15 ppm.

KEYWORDS: QCM sensor, fluorinated polymer.


Journal Identifiers

eISSN: 0379-4350