Heroin detection by raman spectroscopy from impure compositions comprising an interfering fluorescent contaminant
US9255842B2 · kind B2 · utility
2Cited by
12References
10Claims
0Family size
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Key dates
| Filing date | Jun 21, 2012 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Sep 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/06113
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of identifying the presence of heroin in an impure heroin composition which contains heroin and at least one fluorescent contaminant which interferes with a Raman signal from the heroin. The method may include contacting the mixture with a solvent such as an alcohol, then contacting the resulting alcohol composition with a SERS surface. The surface may then be exposed to laser light from a hand-held Raman spectrometer to detect a Raman signal from the heroin. An apparatus for performing the method is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.