Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Reexamination Certificate
2011-08-09
2011-08-09
Chowdhury, Tarifur (Department: 2886)
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
Reexamination Certificate
active
07995203
ABSTRACT:
The invention is intended for illicit drug detection, preferably to Cocaine detection in street samples containing in addition to Cocaine also adulterants and/or diluents (also denominated as cutting agents) used for increasing the quantity of the product and/or for disguising the existence of Cocaine. The invention provides preparing of the liquid street sample, taking an aliquot of said sample, its analysis with help of SFS (Spectral Fluorescence Signatures) technology, fixing the result of analysis as a reference value, the subsequent acidification of the liquid sample, taking an aliquot of the acidified liquid sample and its analysis with help of SFS technology, fixing the result of analysis and comparing said result with the reference value. The result of comparison enables to differentiate between Cocaine Base and Cocaine hydrochloride in the street sample.
REFERENCES:
patent: 5206179 (1993-04-01), Ramsey
Babichenko Sergey
Ivkina Tatjana
Poryvkina Larisa
Sominksky Vitaly
Chowdhury Tarifur
Ladas & Parry LLP
Nartest AS
Nur Abdullahi
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