Molecular Ionization from Carbon Nanotube Paper
Researchers at Purdue University, in collaboration with Professor N. Pradeep at the Indian Institute of Technology, Madras, have developed a method of ionization via a carbon nanotube impregnated surface that provides significant advantages to current methods. Samples may be collected by simply wiping the surface across the sample. Ionization is induced by a very small electrical potential. The resulting ionization is gentle on the sample, producing single ion species with no fragment ions. This method has been used to effectively identify pesticides, antibiotics, and amino acids. The small size, simplicity, and effective ionization of this method could easily be incorporated into new spectrometers more suited to portable use.
Approximately 1,000 times lower voltage necessary compared to similar ionization methods Gentle to samples, resulting in less complex spectra Small, simple, inexpensive design
R. Graham CooksPurdue ChemistryAston Labs
United States
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美国
