Abstract: A surface plasmon resonance (SPR) sensor based on molecularly imprinted polymer (MIP) was developed for fast detection of chemical threat agents (CTAs) in water. A portable SPR platform provided a very compact-size (L* W* H of 8.5* 4.5* 4.5 inch) system and the SPR sensor chip was fabricated by a facile process with an inexpensive coating of silver as the SPR material, making possible the sensor chip as a disposal sensor. Using methyl parathion as the simulant of CTA, the developed SPR sensor with the recognition site showed apparent SPR signal than Non-imprinted polymer (NIP) counterpart, suggesting the excellent recognition of the targeted molecules. It also provided a fast responding within 5 minutes with the limit of detection of sub-ppm level.
Template and target information: parathion methyl, chemical threat agents, CTAs
Author keywords: molecularly imprinted polymer, surface plasmon resonance, organophosphorus pesticide, chemical threat agents