such as "Introduction", "Conclusion"..etc
in Spain are reporting an advance toward a new method for determining
the purity of heroin that could save lives by allowing investigators to
quickly identify impure and more toxic forms of the drug being sold on
the street. Unlike conventional tests, it does not destroy the original
drug sample, according to their report. It is scheduled for the Oct. 1
issue of ACS’ Analytical Chemistry, a semi-monthly journal.
In the new study, Salvador Garrigues and colleagues point out that the
purity of heroin can vary widely, since pushers often mix it with
chalk, flour, or other “cutting agents.” Because heroin users do not
know the exact purity of the drug, they are more at risk for overdose
and even death. Conventional tests for determining the purity of street
heroin involve destructive and time-consuming sample preparation, the
They studied 31 illicit drug samples from Spain that contained six to
34 percent heroin. The scientists tested the samples using the new
analytical method, called Diffuse Reflectance Near-Infrared
Spectroscopy (DR-NIR). It involves shooting a beam of infrared light
into a sample to determine its chemical composition based on the
wavelength of light emitted. The method quickly and accurately
determined the chemical content of the samples without any prior sample
preparation, the scientists say.
News release from The American Chemical Society on September 17, 2008.
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