Wired News: New Screening Tech Misses Nothing: "New Screening Tech Misses Nothing
By Abby Christopher
02:00 AM Oct. 11, 2005 PT
Bad news for terrorists and drug traffickers: The hunt for narcotics, explosives and biohazards is about to get faster and easier thanks to new research from Purdue University.
A new testing method can, for the first time, speedily check objects and people for traces of chemical compounds. The detection technology known as mass spectrometry is already in use by forensic scientists.
'Mass spectrometry is one of the most sensitive methods for finding drugs, chemicals, pollutants and disease, but the problem is that you have to extract a sample and treat that sample before you can analyze it,' said Evan Williams, a chemistry professor at UC Berkeley.
That process can take anywhere from two to 15 minutes for each sample. Multiply that by the number of people in line at airport security at JFK the day before Thanksgiving, and you've got a logistical nightmare on your hands.
The research from Purdue, led by analytical chemistry professor Graham Cooks, developed a technique called desorption electrospray ionization, or DESI, that eliminates a part of the mass spectrometry process, and thus speeds up the detection of substances to less than 10 seconds, said Williams."
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