1 research outputs found
Highly Specific and Wide Range NO<sub>2</sub> Sensor with Color Readout
We
present a simple and inexpensive method to implement a Griess-Saltzman-type
reaction that combines the advantages of the liquid phase method (high
specificity and fast response time) with the benefits of a solid implementation
(easy to handle). We demonstrate that the measurements can be carried
out using conventional RGB sensors; circumventing all the limitations
around the measurement of the samples with spectrometers. We also
present a method to optimize the measurement protocol and target a
specific range of NO<sub>2</sub> concentrations. We demonstrate that
it is possible to measure the concentration of NO<sub>2</sub> from
50 ppb to 300 ppm with high specificity and without modifying the
Griess-Saltzman reagent