Degradation of Sub-Micrometer Sensitive Polymer Layers of Acoustic Sensors Exposed to Chlorpyrifos Water-Solution
David Rabus1, Fanny Lotthammer1, Joscelyn Degret1
1Franche-Comté Électronique Mécanique Thermique et Optique-Sciences et Technologies, Université de Franche-Comté, CNRS, 15B Avenue des Montboucons, CEDEX, F-25030 Besancon, France.
Abstract:
The detection of organophosphates, a wide class of pesticides, in water-solution has a huge impact in environmental monitoring. Acoustic transducers are used to design passive wireless sensors for the direct detection of pesticides in water-solution by using tailored polymers as sensitive layers. We demonstrate by combining analytical chemistry tools that organophosphate molecules strongly alter polymer layers widely used in acoustic sensors in the presence of water. This chemical degradation can limit the use of these polymers in detection of organophosphates in water-solution.


