[Raman investigating of trace contraband heroin by micro Raman].
Under incident light 514.5 nm, Raman scattering spectrum of trace contraband Heroin on finger with low concentration was investigated. It has been known that contraband Heroin has strong fluorescence background in its Raman scattering under visible excitation. By analyzing the sample surface and applying appropriate experimental method, the high signal-noise ratio quality and low fluorescence Raman spectrum was obtained. The result indicated that it would be much improved the Raman scattering spectrum by using slick Al slice as gasket for drugs and selecting proper area on the sample surface, controlling the incident light power. This work could provide a powerful method for detecting trace materials including drugs, explosives, deleterious material in forensic science.
Zhao
Jin-tao
JT
Dept. of Physics, School of Science and Arts, Hangzhou Institute of Electronic Engineering, Hangzhou 310037, China.
Xu
Cun-ying
CY
Duan
Yun-biao
YB
Zhang
Peng-xiang
PX
Si
Min-zheng
MZ
Yang
Qun
Q
D003932:Heroin / Q000032:analysis*; D012542:Scattering, Radiation; D013059:Spectrum Analysis, Raman / Q000379:methods*
D003932:Heroin