volume of water and not the amount of the non-volatile fraction. More focused studies of the bioaerosol particles carrying the nonvolatiles has been done using a particle fractionation technique called impaktor9
.
A key parameter in drug testing is cannabis.
In this technique, the particles are physi- cally sorted according to size.
Exhaled breath for drug testing Following the recent demonstration that
amphetamine can be detected in exhaled breath aſter intake, the possible use of exhaled breath as a new specimen for drug testing has been explored further with very promising results. It was originally found that all 12 of the 12 subjects that had become intoxicated from amphetamine/
methamphetamine had amphetamine/ methamphetamine detectable in their breath following recovery, which was about 24 hours aſter intake10
. Te study
was performed at a specialized clinic for acute recovery from intoxication of addictive drugs. Te subjects were heavy drug addicts and self-reported intake of amphetamine as cause for intoxication. Te self-reports were supported by results from blood and urine analyses. Te study hap- pened to coincide with the introduction of methamphetamine as an amphetamine substitute on the illicit drug market. None of the subjects were aware of
that, according to self-reports. This finding of amphetamine was further strengthened by the subsequent detec-
34
datia focus
spring 2013
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