公开(公告)号：US20160131586A1

公开(公告)日：2016-05-12

申请号：US14996725

申请日：2016-01-15

Applicant: Thermo Scientific Portable Analytical Instruments Inc.

Inventor： Craig Morris GARDNER ,  Michael Derek HARGREAVES ,  Peidong WANG ,  Yu SHEN

IPC: G01N21/65 ,  G01N21/94

CPC classification number: G01N21/658 ,  G01J3/44 ,  G01N21/65 ,  G01N21/8483 ,  G01N21/94 ,  G01N33/9486 ,  G01N2021/646 ,  G01N2021/656 ,  G01N2201/0221 ,  G01N2201/06113

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.