In the issue of Nature Chemistry, Kenneth Suslick and his team developed an artificial, digital multidimensional extension of litmus paper for general detection of toxic industrial chemicals (TICSs) in a fast, simple and inexpensive way. The device is able to give an array of concentration of colours that indicate the specific type and concentration of the toxic gas. This brings us one step closer to have small wearable sensor that can detect multiple airborne toxins.
Reference:
Lim SH, Feng L, Kemling JW, Musto CJ, Suslick KS. An Optoelectronic Nose for Detection of Toxic Gases. Nature Chemistry, 2009 DOI: 10.1038/NCHEM.360
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