SFU scientists increased the sensitivity of a water toxicity analysis biosensor
The core of the biosensor is a module that is coated with enzymes of luminous organisms. The enzymes glow under favourable conditions, but if there are toxins in the environment, the luminescence weakens. One can assess the safety of water or a product by intensity of the glow.
Gold nanoparticles have increased the sensitivity of the sensor. The light emitted during the enzymatic reaction lands on the nanoparticles and is then reflected with an increase in intensity by an order of magnitude.