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Breath gas analysis is a method for gaining information on the clinical state of an individual by monitoring volatile organic compounds (VOCs) present in the exhaled breath. Exhaled breath is naturally produced by the human body through expiration and therefore can be collected in non-invasively and in an unlimited way. [ 1 ]
Explosive detection is a non-destructive inspection process ... (such as acetone ... ions with a larger cross-section will collide with more gas at atmospheric ...
Acetone (2-propanone or dimethyl ketone) is an organic compound with the formula (CH 3) 2 CO. [22] It is the simplest and smallest ketone (>C=O).It is a colorless, highly volatile, and flammable liquid with a characteristic pungent odour, very reminiscent of the smell of pear drops.
The electrostatically charged soil samples that stick to the outer electrode are then dislodged into a sampling vial and extracted into acetone before presented to the Fido explosives detector using a portable gas chromatograph. This approach allows users to collect soil samples from a much larger area compared to the direct sampling method.
Doping materials are sometimes added to the drift gas for ionization selectivity. For example, acetone can be added for chemical warfare agent detection, chlorinated solvents added for explosives, and nicotinamide added for drugs detection. [14]
Other substances that might reduce the BrAC reading include a bag of activated charcoal concealed in the mouth (to absorb alcohol vapor), an oxidizing gas (such as N 2 O, Cl 2, O 3, etc.) that would fool a fuel cell type detector, or an organic interferent to fool an infrared absorption detector. The infrared absorption detector is more ...