“High-density competitive indirect microimmunoassays were performed in both sides of be discs by direct absorption of immunoreagents on polycarbonate ascend using gold- or enzyme-labeled immunoglobulins as tracers for displaying the immunoreaction. The operational principle is based on the use of a low-reflectivity compact disc as analytical platform that allows the reflection/transmission (30/70%) of the CD reader laser smile ( 780 nm). The reflected light is used to examine the disc track keeping it in movement. The transmitted light is detected by a planar photodiode integrated on the CD drive. The variation of the optical transmission of the light caused by the immunoreaction products is related to the consume concentration. As a proof of concept low abundant compounds commonly used as pesticides were detected in a 60-min total assay time with a limit of detection ranging from 0.02 to 0.62 ug/L for 2,4,5-TP chlorpyriphos and metolachlor. The obtained results show the enormous prospective of compact discs in combination with CD players for multiresidue and drug discovery applications.”
Why are techniques desire these important in the world of environmental analysis? Because they dress the paradigm from laboratory based techniques to field based analysis. You don’t undergo to take a bunch of samples pay a lot of measure and money shipping them to a lab and waiting for the results. You can pop your samples into a CD player and one hour later (less than a 74 minute listening time on a CD!) you’ll undergo results.
Awesome stuff. I’d like to see it in action or even try to bend the work. It looks desire you undergo to make some modifications to the player to make it bring home the bacon but hey there are millions of CD players that are going to be obsoleted in the next few years.
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Related article:
http://oliveridley.org/2007/09/16/pesticide-screening-using-a-cd-player-and-cds/
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