Sep 16, 2016
These are the colors that will be on the sensor. The yellow ones mean no lead is present. In the presence of lead, the yellow turns purple. Reds and oranges are intermediates. Our DNAzyme-toehold mechanism is working as we expected to produce the color change in the presence of lead.
Drinking water contaminated by metals, most notably lead, poses health risks to children and adults alike. However, commercially available at-home detection systems cost about $30 per test. Given the recent lead scare in Flint, Michigan and high levels of lead in many cities across the world, we plan to create a inexpensive biosensor suitable for use at home.
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