Israeli Researchers used carbon nanotube to detect lung cancer markers

7 January 2009

The researchers from Israeli Institute of Technology lead by Dr. Hossam Haick claims to have developed a new diagnostic system that is able to detect lung cancer markers in a patient’s breathe. The research was carried out using different organic materials coated carbon nanotubes array devices and the research finding has been published in the Journal Nano Letters.

For coating carbon nanotube, Dr. Haick and his team took 10 different insulating nonpolymeric organic materials and formed different devices having random networks of single walled carbon nanotubes and for creating sensors, researchers used conventional microprocessor techniques. These different coated nonpolymeric organic materials when exposed to various volatile organic chemicals found in human breath provide unique response.

Researchers used GC-MS (Gas chromatograph-mass spectroscopy), a well known analytical technique to analyze the samples of breath of healthy as well as stage 4 lung cancer patients. Before analyzing the compounds present in breath, these volatile organic compounds were also concentrated using solid phase microextraction. Once the samples were allowed to pass through the array of sensors and the outcome was recorded and it was found that it is characteristics of the mixture of volatile organic compounds present in breath.

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