Yan, C.; Qin, M.; Guo, T.; Zhang, L.; Yang, J.; Pan, Y. Synthesis and Application of Polymer SXFA in the Detection of Organophosphine Agents with a SAW Sensor. Polymers2024, 16, 784.
Yan, C.; Qin, M.; Guo, T.; Zhang, L.; Yang, J.; Pan, Y. Synthesis and Application of Polymer SXFA in the Detection of Organophosphine Agents with a SAW Sensor. Polymers 2024, 16, 784.
Yan, C.; Qin, M.; Guo, T.; Zhang, L.; Yang, J.; Pan, Y. Synthesis and Application of Polymer SXFA in the Detection of Organophosphine Agents with a SAW Sensor. Polymers2024, 16, 784.
Yan, C.; Qin, M.; Guo, T.; Zhang, L.; Yang, J.; Pan, Y. Synthesis and Application of Polymer SXFA in the Detection of Organophosphine Agents with a SAW Sensor. Polymers 2024, 16, 784.
Abstract
Effective detection of isopropyl methylfluorophosphonate (GB, sarin), a type of organophosphine poisoning agent, is an urgent issue to be addressed in maintaining public safety. In this research, a gas-sensitive film material defined as poly (4-hydroxy-4,4-bis trifluoromethyl) - butyl-1-enyl) - si-loxane (SXFA) with the structure of hexafluoroisopropyl (HFIP) functional group was synthesized by using methyl vinylpropyl dichlorosilane and hexafluoroacetone trihydrate as initial materials. Synthesis process products were characterized by FTIR. SXFA was prepared on a 200 MHz shear surface wave delay line with spin coating method for GB detected. Detection limit of ＜ 0.1 mg/m3 was obtained through conditional experiments. Meanwhile, we also obtained the maximum re-sponse of 2.168 mV at 0.1 mg/m3 concentration, which indicting a much lower detection limit of SAW-SXFA sensor. Additionally, the maximum response standard deviation of 0.11 mV with a co-efficient of variation of 0.01, as well as the maximum recovery standard deviation of 0.22 mV with a coefficient of variation of 0.02 were also obtained through 5 repeated experiments. Results showed that the SAW-SXFA sensor has strong selectivity and reproducibility, good selectivity, positive detection ability, high sensitivity, and fast alarm performance for sarin detection.
Keywords
SXFA; SAW-SXFA sensor; organophosphorus agent; GB
Subject
Chemistry and Materials Science, Other
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
