Chemosensors in environmental monitoring: challenges in ruggedness and selectivity

Lieberzeit, Peter A.; Dickert, Franz L.
January 2009
Analytical & Bioanalytical Chemistry;Jan2009, Vol. 393 Issue 2, p467
Academic Journal
Environmental analysis is a potential key application for chemical sensors owing to their inherent ability to detect analytes on-line and in real time in distributed systems. Operating a chemosensor in a natural environment poses substantial challenges in terms of ruggedness, long-term stability and calibration. This article highlights current trends of achieving both the necessary selectivity and ruggedness: one way is deploying sensor arrays consisting of robust broadband sensors and extracting information via chemometrics. If using only a single sensor is desired, molecularly imprinted polymers offer a straightforward way for designing artificial recognition materials. Molecularly imprinted polymers can be utilized in real-life environments, such as water and air, aiming at detecting analytes ranging from small molecules to entire cells. [Figure not available: see fulltext.]


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