Biochip with E-Coli bacteria for detection of arsenic in drinking water

Arsenic and other pollutants are often present in trace amounts in drinking water in a number of countries. In aqueous solutions the sensitivity of arsenic-responsive bacterial bioreporters is far better than the performance of chemical field test kits. However, biological detection currently requires extensive handling and expensive fluorescence microscopy. We fabricated and tested microfluidic chips with fluorescent (GFP) E. coil bacteria that respond to arsenic. Measurement results of fluorescence intensity as function of arsenic concentration and exposure time are promising, showing a clear response to concentrations of 50 mu g/l of arsenite.

Published in:
Proceedings of the NanoBioTech 2009 Conference, 1, 2p.
Presented at:
the 13th Annual European Conference on Micro&Nanoscale Technologies for the Biosciences, NanoBioTech, Montreux, Switzerland, Nov. 16-18, 2009

 Record created 2010-01-20, last modified 2019-04-25

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