Detection of sarin with a fluorinated polymer-coated quartz crystal microbalance sensor

作者：Zuo Boli; Li Wei^*; Zhang Tian; Zhang Hongxing; Liu Guohong

来源：South African Journal of Chemistry, 2007, 60: 118-124.

• 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.

• 出版日期2007